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Plech A, Tack M, Huang H, Arefev M, Ziefuss AR, Levantino M, Karadas H, Chen C, Zhigilei LV, Reichenberger S. Physical Regimes and Mechanisms of Picosecond Laser Fragmentation of Gold Nanoparticles in Water from X-ray Probing and Atomistic Simulations. ACS NANO 2024; 18:10527-10541. [PMID: 38567906 DOI: 10.1021/acsnano.3c12314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Laser fragmentation in liquids has emerged as a promising green chemistry technique for changing the size, shape, structure, and phase composition of colloidal nanoparticles, thus tuning their properties to the needs of practical applications. The advancement of this technique requires a solid understanding of the mechanisms of laser-nanoparticle interactions that lead to the fragmentation. While theoretical studies have made impressive practical and mechanistic predictions, their experimental validation is required. Hence, using the picosecond laser fragmentation of Au nanoparticles in water as a model system, the transient melting and fragmentation processes are investigated with a combination of time-resolved X-ray probing and atomistic simulations. The direct comparison of the diffraction profiles predicted in the simulations and measured in experiments has revealed a sequence of several nonequilibrium processes triggered by the laser irradiation. At low laser fluences, in the regime of nanoparticle melting and resolidification, the results provide evidence of a transient superheating of crystalline nanoparticles above the melting temperature. At fluences about three times the melting threshold, the fragmentation starts with evaporation of Au atoms and their condensation into small satellite nanoparticles. As fluence increases above five times the melting threshold, a transition to a rapid (explosive) phase decomposition of superheated nanoparticles into small liquid droplets and vapor phase atoms is observed. The transition to the phase explosion fragmentation regime is signified by prominent changes in the small-angle X-ray scattering profiles measured in experiments and calculated in simulations. The good match between the experimental and computational diffraction profiles gives credence to the physical picture of the cascade of thermal fragmentation regimes revealed in the simulations and demonstrates the high promise of the joint tightly integrated computational and experimental efforts.
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Affiliation(s)
- Anton Plech
- Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Meike Tack
- Department of Technical Chemistry I and Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Universitätsstrasse 7, D-45141 Essen, Germany
| | - Hao Huang
- Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904-4745, United States
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Mikhail Arefev
- Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904-4745, United States
| | - Anna R Ziefuss
- Department of Technical Chemistry I and Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Universitätsstrasse 7, D-45141 Essen, Germany
| | - Matteo Levantino
- European Synchrotron Radiation Facility, F-38043 Grenoble, France
| | - Hasan Karadas
- Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Chaobo Chen
- Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904-4745, United States
| | - Leonid V Zhigilei
- Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904-4745, United States
| | - Sven Reichenberger
- Department of Technical Chemistry I and Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Universitätsstrasse 7, D-45141 Essen, Germany
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Karaman CO, Bykov AY, Kiani F, Tagliabue G, Zayats AV. Ultrafast hot-carrier dynamics in ultrathin monocrystalline gold. Nat Commun 2024; 15:703. [PMID: 38267406 PMCID: PMC10808103 DOI: 10.1038/s41467-024-44769-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 01/05/2024] [Indexed: 01/26/2024] Open
Abstract
Applications in photodetection, photochemistry, and active metamaterials and metasurfaces require fundamental understanding of ultrafast nonthermal and thermal electron processes in metallic nanosystems. Significant progress has been recently achieved in synthesis and investigation of low-loss monocrystalline gold, opening up opportunities for its use in ultrathin nanophotonic architectures. Here, we reveal fundamental differences in hot-electron thermalisation dynamics between monocrystalline and polycrystalline ultrathin (down to 10 nm thickness) gold films. Comparison of weak and strong excitation regimes showcases a counterintuitive unique interplay between thermalised and non-thermalised electron dynamics in mesoscopic gold with the important influence of the X-point interband transitions on the intraband electron relaxation. We also experimentally demonstrate the effect of hot-electron transfer into a substrate and the substrate thermal properties on electron-electron and electron-phonon scattering in ultrathin films. The hot-electron injection efficiency from monocrystalline gold into TiO2, approaching 9% is measured, close to the theoretical limit. These experimental and modelling results reveal the important role of crystallinity and interfaces on the microscopic electronic processes important in numerous applications.
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Affiliation(s)
- Can O Karaman
- Laboratory of Nanoscience for Energy Technologies (LNET), STI, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Anton Yu Bykov
- Department of Physics and London Centre for Nanotechnology, King's College London, London, WC2R 2LS, UK
| | - Fatemeh Kiani
- Laboratory of Nanoscience for Energy Technologies (LNET), STI, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Giulia Tagliabue
- Laboratory of Nanoscience for Energy Technologies (LNET), STI, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
| | - Anatoly V Zayats
- Department of Physics and London Centre for Nanotechnology, King's College London, London, WC2R 2LS, UK.
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3
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Farahvash A, Agrawal M, Peterson AA, Willard AP. Modeling Surface Vibrations and Their Role in Molecular Adsorption: A Generalized Langevin Approach. J Chem Theory Comput 2023; 19:6452-6460. [PMID: 37682532 DOI: 10.1021/acs.jctc.3c00473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
The atomic vibrations of a solid surface can play a significant role in the reactions of surface-bound molecules, as well as their adsorption and desorption. Relevant phonon modes can involve the collective motion of atoms over a wide array of length scales. In this paper, we demonstrate how the generalized Langevin equation can be utilized to describe these collective motions weighted by their coupling to individual sites. Our approach builds upon the generalized Langevin oscillator (GLO) model originally developed by Tully. We extend the GLO by deriving parameters from atomistic simulation data. We apply this approach to study the memory kernel of a model platinum surface and demonstrate that the memory kernel has a bimodal form due to coupling to both low-energy acoustic modes and high-energy modes near the Debye frequency. The same bimodal form was observed across a wide variety of solids of different elemental compositions, surface structures, and solvation states. By studying how these dominant modes depend on the simulation size, we argue that the acoustic modes are frozen in the limit of macroscopic lattices. By simulating periodically replicated slabs of various sizes, we quantify the influence of phonon confinement effects in the memory kernel and their concomitant effect on simulated sticking coefficients.
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Affiliation(s)
- Ardavan Farahvash
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Mayank Agrawal
- School of Engineering, Brown University, Providence, Rhode Island 02912, United States
| | - Andrew A Peterson
- School of Engineering, Brown University, Providence, Rhode Island 02912, United States
| | - Adam P Willard
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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Guo Z, Yu G, Zhang Z, Han Y, Guan G, Yang W, Han MY. Intrinsic Optical Properties and Emerging Applications of Gold Nanostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2206700. [PMID: 36620937 DOI: 10.1002/adma.202206700] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 12/21/2022] [Indexed: 06/09/2023]
Abstract
The collective oscillation of free electrons at the nanoscale surface of gold nanostructures is closely modulated by tuning the size, shape/morphology, phase, composition, hybridization, assembly, and nanopatterning, along with the surroundings of the plasmonic surface located at a dielectric interface with air, liquid, and solid. This review first introduces the physical origin of the intrinsic optical properties of gold nanostructures and further summarizes stimuli-responsive changes in optical properties, metal-field-enhanced optical signals, luminescence spectral shaping, chiroptical response, and photogenerated hot carriers. The current success in the landscape of nanoscience and nanotechnology mainly originates from the abundant optical properties of gold nanostructures in the thermodynamically stable face-centered cubic (fcc) phase. It has been further extended by crystal phase engineering to prepare thermodynamically unfavorable phases (e.g., kinetically stable) and heterophases to modulate their intriguing phase-dependent optical properties. A broad range of promising applications, including but not limited to full-color displays, solar energy harvesting, photochemical reactions, optical sensing, and microscopic/biomedical imaging, have fostered parallel research on the multitude of physical effects occurring in gold nanostructures.
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Affiliation(s)
- Zilong Guo
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Guo Yu
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Zhiguo Zhang
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Yandong Han
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Guijian Guan
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Wensheng Yang
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475001, China
| | - Ming-Yong Han
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
- Institute of Materials Research and Engineering, 2 Fusionopolis Way, Singapore, 138634, Singapore
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Indhu AR, Keerthana L, Dharmalingam G. Plasmonic nanotechnology for photothermal applications - an evaluation. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2023; 14:380-419. [PMID: 37025366 PMCID: PMC10071519 DOI: 10.3762/bjnano.14.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 03/02/2023] [Indexed: 06/19/2023]
Abstract
The application of plasmonic nanoparticles is motivated by the phenomenon of surface plasmon resonance. Owing to the tunability of optothermal properties and enhanced stability, these nanostructures show a wide range of applications in optical sensors, steam generation, water desalination, thermal energy storage, and biomedical applications such as photothermal (PT) therapy. The PT effect, that is, the conversion of absorbed light to heat by these particles, has led to thriving research regarding the utilization of plasmonic nanoparticles for a myriad of applications. The design of conventional nanomaterials for PT conversion has focussed predominantly on the manipulation of photon absorption through bandgap engineering, doping, incorporation, and modification of suitable matrix materials. Plasmonic nanomaterials offer an alternative and attractive approach in this regard, through the flexibility in the excitation of surface plasmons. Specific advantages are the considerable improved bandwidth of the absorption, a higher efficiency of photon absorption, facile tuning, as well as flexibility in the synthesis of plasmonic nanomaterials. This review of plasmonic PT (PPT) research begins with a theoretical discussion on the plasmonic properties of nanoparticles by means of the quasi-static approximation, Mie theory, Gans theory, generic simulations on common plasmonic material morphologies, and the evaluation processes of PT performance. Further, a variety of nanomaterials and material classes that have potential for PPT conversion are elucidated, such as plasmonic metals, bimetals, and metal-metal oxide nanocomposites. A detailed investigation of the essential, but often ignored, concept of thermal, chemical, and aggregation stability of nanoparticles is another part of this review. The challenges that remain, as well as prospective directions and chemistries, regarding nanomaterials for PT conversion are pondered on in the final section of the article, taking into account the specific requirements from different applications.
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Affiliation(s)
- A R Indhu
- Plasmonic Nanomaterials Laboratory, PSG Institute of Advanced Studies, Coimbatore-641004, India
| | - L Keerthana
- Plasmonic Nanomaterials Laboratory, PSG Institute of Advanced Studies, Coimbatore-641004, India
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6
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Arefev MI, Shugaev MV, Zhigilei LV. Kinetics of laser-induced melting of thin gold film: How slow can it get? SCIENCE ADVANCES 2022; 8:eabo2621. [PMID: 36129986 PMCID: PMC9491712 DOI: 10.1126/sciadv.abo2621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
Melting is a common and well-studied phenomenon that still reveals new facets when triggered by laser excitation and probed with ultrafast electron diffraction. Recent experimental evidence of anomalously slow nanosecond-scale melting of thin gold films irradiated by femtosecond laser pulses motivates computational efforts aimed at revealing the underlying mechanisms of melting. Atomistic simulations reveal that a combined effect of lattice superheating and relaxation of laser-induced stresses ensures the dominance of the homogeneous melting mechanism at all energies down to the melting threshold and keeps the time scale of melting within ~100 picoseconds. The much longer melting times and the prominent contribution of heterogeneous melting inferred from the experiments cannot be reconciled with the atomistic simulations by any reasonable variation of the electron-phonon coupling strength, thus suggesting the need for further coordinated experimental and theoretical efforts aimed at addressing the mechanisms and kinetics of laser-induced melting in the vicinity of melting threshold.
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7
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Yamada A. Computational Analyses of Plasmonics of a Silver Nanoparticle in a Vacuum and in a Water Solution by Classical Electronic and Molecular Dynamics Simulations. J Phys Chem A 2022; 126:4762-4771. [PMID: 35853175 DOI: 10.1021/acs.jpca.2c02811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present basic optical responses of a silver nanoparticle (Ag309) in a vacuum and a water solution obtained by classical electronic and molecular dynamics (CEMD) calculations, where the CEMD is our previously developed force-field based molecular dynamics simulation method that incorporates the classical equation of motion for free electrons in metal and an interaction with the applied oscillating electric field (Yamada, A. J. Chem. Phys. 2021, 155, 174118)). The present work is the follow-up of the previous study. Calculated absorption spectra in the visible region with various conditions are reported together with parameter determination for realistic analyses as well as the verification of the method. Time-domain optical responses of Ag309 in water solvent are as well analyzed in terms of the plasmon resonance excitation under a subpicosecond light pulse and its thermal relaxation.
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Affiliation(s)
- Atsushi Yamada
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
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8
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Huang H, Xu Y, Luo G, Xie Z, Ming W. Molecular Dynamics Study of Laser Interaction with Nanoparticles in Liquids and Its Potential Application. NANOMATERIALS 2022; 12:nano12091524. [PMID: 35564233 PMCID: PMC9105410 DOI: 10.3390/nano12091524] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 12/02/2022]
Abstract
Laser interaction with nanoparticles in liquid is the fundamental theoretical basis for many applications but it is still challenging to observe this nanoscale phenomenon within a few nanoseconds in liquid by experiment. The successful implementation of the two-temperature method integrated with molecular dynamics (TTM-MD) in laser interaction with bulk material has shown great potential in providing a panoramic view of the laser interaction with the nanoparticles. However, the current TTM-MD model has to divide the system into cubic cells, which leads to mistakes near the nanoparticle’s surface. We introduce the latest model, which performs the TTM-MD on each individual cluster instead of the cubic cells, and its high-performance parallel cluster analysis algorithm to update the cluster size. The cluster-based TTM-MD revealed the nanoparticle formation mechanism of laser fragmentation in liquid (LFL) and facilitated the study of laser fluence’s effect on the size distribution. In addition to LFL, this model is promising to be implemented in the laser thermal therapy of tumors, laser melting in liquid (LML), etc. Although cluster-based TTM-MD has proven to be a powerful tool for studying laser interaction with nanoparticles, a few challenges and future developments for the cluster-based TTM-MD, especially the ionization induced by femtosecond, are also discussed.
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Affiliation(s)
- Hao Huang
- School of Mechanical Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
| | - Yingjie Xu
- Henan Key Lab of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, China;
| | - Guofu Luo
- Henan Key Lab of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, China;
- Correspondence: (G.L.); (W.M.)
| | - Zhuobin Xie
- Guangdong Provincial Key Laboratory of Digital Manufacturing Equipment, Guangdong HUST Industrial Technology Research Institute, Dongguan 523808, China;
| | - Wuyi Ming
- Henan Key Lab of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, China;
- Correspondence: (G.L.); (W.M.)
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9
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Du X, Liu Z, Higaki T, Zhou M, Jin R. Understanding the Nascent Plasmons and Metallic Bonding in Atomically Precise Gold Nanoclusters. Chem Sci 2022; 13:1925-1932. [PMID: 35308844 PMCID: PMC8849037 DOI: 10.1039/d1sc06819a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 01/13/2022] [Indexed: 11/21/2022] Open
Abstract
The metallic bond is arguably the most intriguing one among the three types of chemical bonds, and the resultant plasmon excitation (e.g. in gold nanoparticles) has garnered wide interest. Recent...
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Affiliation(s)
- Xiangsha Du
- Department of Chemistry, Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA
| | - Zhongyu Liu
- Department of Chemistry, Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA
| | - Tatsuya Higaki
- Department of Chemistry, Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA
| | - Meng Zhou
- Department of Chemistry, Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA
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Diroll BT, Jeong S, Ye X. Ultrafast Dynamics of Colloidal Copper Nanorods: Intraband versus Interband Excitation. SMALL SCIENCE 2021. [DOI: 10.1002/smsc.202100103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Benjamin T. Diroll
- Center for Nanoscale Materials Argonne National Laboratory 9700 S. Cass Avenue Lemont IL 60439 USA
| | - Soojin Jeong
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| | - Xingchen Ye
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
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Bizyaev I, Gabdullin P, Chumak M, Babyuk V, Davydov S, Osipov V, Kuznetsov A, Kvashenkina O, Arkhipov A. Low-Field Electron Emission Capability of Thin Films on Flat Silicon Substrates: Experiments with Mo and General Model for Refractory Metals and Carbon. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3350. [PMID: 34947699 PMCID: PMC8709470 DOI: 10.3390/nano11123350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/24/2021] [Accepted: 12/06/2021] [Indexed: 10/31/2022]
Abstract
Herein, we describe a study of the phenomenon of field-induced electron emission from thin films deposited on flat Si substrates. Films of Mo with an effective thickness of 6-10 nm showed room-temperature low-field emissivity; a 100 nA current was extracted at macroscopic field magnitudes as low as 1.4-3.7 V/μm. This result was achieved after formation treatment of the samples by combined action of elevated temperatures (100-600 °C) and the electric field. Morphology of the films was assessed by AFM, SEM, and STM/STS methods before and after the emission tests. The images showed that forming treatment and emission experiments resulted in the appearance of numerous defects at the initially continuous and smooth films; in some regions, the Mo layer was found to consist of separate nanosized islets. Film structure reconstruction (dewetting) was apparently induced by emission-related factors, such as local heating and/or ion irradiation. These results were compared with our previous data obtained in experiments with carbon islet films of similar average thickness deposited onto identical substrates. On this basis, we suggest a novel model of emission mechanism that might be common for thin films of carbon and refractory metals. The model combines elements of the well-known patch field, multiple barriers, and thermoelectric models of low-macroscopic-field electron emission from electrically nanostructured heterogeneous materials.
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Affiliation(s)
- Ivan Bizyaev
- Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya St., 29, 195251 St. Petersburg, Russia; (I.B.); (P.G.); (M.C.); (V.B.); (S.D.); (V.O.); (O.K.)
| | - Pavel Gabdullin
- Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya St., 29, 195251 St. Petersburg, Russia; (I.B.); (P.G.); (M.C.); (V.B.); (S.D.); (V.O.); (O.K.)
| | - Maxim Chumak
- Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya St., 29, 195251 St. Petersburg, Russia; (I.B.); (P.G.); (M.C.); (V.B.); (S.D.); (V.O.); (O.K.)
| | - Vladislav Babyuk
- Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya St., 29, 195251 St. Petersburg, Russia; (I.B.); (P.G.); (M.C.); (V.B.); (S.D.); (V.O.); (O.K.)
| | - Sergey Davydov
- Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya St., 29, 195251 St. Petersburg, Russia; (I.B.); (P.G.); (M.C.); (V.B.); (S.D.); (V.O.); (O.K.)
| | - Vasilii Osipov
- Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya St., 29, 195251 St. Petersburg, Russia; (I.B.); (P.G.); (M.C.); (V.B.); (S.D.); (V.O.); (O.K.)
- Chemistry Department, Institute of Physical Chemistry, University of Cologne, Greinstr. 4-6, 50939 Köln, Germany
| | - Alexey Kuznetsov
- Nanotechnology Research and Education Centre RAS, Alferov St. Petersburg National Research Academic University, Khlopin St. 8/1, 194021 St. Petersburg, Russia;
| | - Olga Kvashenkina
- Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya St., 29, 195251 St. Petersburg, Russia; (I.B.); (P.G.); (M.C.); (V.B.); (S.D.); (V.O.); (O.K.)
| | - Alexander Arkhipov
- Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya St., 29, 195251 St. Petersburg, Russia; (I.B.); (P.G.); (M.C.); (V.B.); (S.D.); (V.O.); (O.K.)
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Podder C, Gong X, Pan H. Ultrafast, Non-Equilibrium and Transient Heating and Sintering of Nanocrystals for Nanoscale Metal Printing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2103436. [PMID: 34617399 DOI: 10.1002/smll.202103436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 08/04/2021] [Indexed: 06/13/2023]
Abstract
The carrier excitation, relaxation, energy transport, and conversion processes during light-nanocrystal (NC) interactions have been intensively investigated for applications in optoelectronics, photocatalysis, and photovoltaics. However, there are limited studies on the non-equilibrium heating under relatively high laser excitation that leads to NCs sintering. Here, the authors use femtosecond laser two-pulse correlation and in-situ optical transmission probing to investigate the non-equilibrium heating of NCs and transient sintering dynamics. First, a two-pulse correlation study reveals that the sintering rate strongly increases when the two heating laser pulses are temporally separated by <10 ps. Second, the sintering rate is found to increase nonlinearly with laser fluence when heating with ≈700 fs laser pulses. By three-temperature modeling, the NC sintering mechanism mediated by electron induced ligand transformation is suggested. The ultrafast and non-equilibrium process facilitates sintering in dry (spin-coated) and wet (solvent suspended) environments. The nonlinear dependence of sintering rate on laser fluence is exploited to print sub-diffraction-limited features in NC suspension. The smallest feature printed is ≈200 nm, which is ≈¼ of the laser wavelength. These findings provide a new perspective toward nanomanufacturing development based on probing and engineering ultrafast transport phenomena in functional NCs.
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Affiliation(s)
- Chinmoy Podder
- J. Mike Walker '66 Department of Mechanical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Xiangtao Gong
- J. Mike Walker '66 Department of Mechanical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Heng Pan
- J. Mike Walker '66 Department of Mechanical Engineering, Texas A&M University, College Station, TX, 77843, USA
- Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO, 65401, USA
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13
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Steves MA, Rajabpour S, Wang K, Dong C, He W, Quek SY, Robinson JA, Knappenberger KL. Atomic-Level Structure Determines Electron-Phonon Scattering Rates in 2-D Polar Metal Heterostructures. ACS NANO 2021; 15:17780-17789. [PMID: 34665593 DOI: 10.1021/acsnano.1c05944] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The electron dynamics of atomically thin 2-D polar metal heterostructures, which consisted of a few crystalline metal atomic layers intercalated between hexagonal silicon carbide and graphene grown from the silicon carbide, were studied using nearly degenerate transient absorption spectroscopy. Optical pumping created charge carriers in both the 2-D metals and graphene components. Wavelength-dependent probing suggests that graphene-to-metal carrier transfer occurred on a sub-picosecond time scale. Following rapid (<300 fs) carrier-carrier scattering, charge carriers monitored through the metal interband transition relaxed through several consecutive cooling mechanisms that included sub-picosecond carrier-phonon scattering and dissipation to the silicon carbide substrate over tens of picoseconds. By studying 2-D In, 2-D Ga, and a Ga/In alloy, we resolved accelerated electron-phonon scattering rates upon alloy formation as well as structural influences on the excitation of in-plane phonon shear modes. More rapid cooling in alloys is attributed to increased lattice disorder, which was observed through correlative polarization-resolved second harmonic generation and electron microscopy. This connection between the electronic relaxation rates, far-field optical responses, and metal lattice disorder is made possible by the intimate relation between nonlinear optical properties and atomic-level structure in these materials. These studies provided insights into electronic carrier dynamics in 2-D crystalline elemental metals, including resolving contributions from specific components of a 2-D metal-containing heterojunction. The correlative ultrafast spectroscopy and nonlinear microscopy results suggest that the energy dissipation rates can be tuned through atomic-level structures.
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Affiliation(s)
- Megan A Steves
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Siavash Rajabpour
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Ke Wang
- Materials Characterization Laboratory, Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Chengye Dong
- 2D Crystal Consortium, Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Wen He
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive, Singapore 117456, Singapore
- Centre for Advanced 2D Materials, National University of Singapore, 6 Science Drive 2, Singapore 117456, Singapore
| | - Su Ying Quek
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive, Singapore 117456, Singapore
- Centre for Advanced 2D Materials, National University of Singapore, 6 Science Drive 2, Singapore 117456, Singapore
- Department of Physics, National University of Singapore, Singapore 117456, Singapore
- NUS Graduate School Integrative Sciences and Engineering Programme, National University of Singapore, Singapore 117456, Singapore
| | - Joshua A Robinson
- 2D Crystal Consortium, Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Center for 2D and Layered Materials, Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Kenneth L Knappenberger
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, United States
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14
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Gogoi H, Maddala BG, Ali F, Datta A. Role of Solvent in Electron-Phonon Relaxation Dynamics in Core-Shell Au-SiO 2 Nanoparticles. Chemphyschem 2021; 22:2201-2206. [PMID: 34402561 DOI: 10.1002/cphc.202100592] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Indexed: 01/03/2023]
Abstract
Relaxation dynamics of plasmons in Au-SiO2 core-shell nanoparticles have been followed by femtosecond pump-probe technique. The effect of excitation pump energy and surrounding medium on the time constants associated with the hot electron relaxation has been elucidated. A gradual increase in the electron-phonon relaxation time with pump energy is observed and can be attributed to the higher perturbation of the electron distribution in AuNPs at higher pump energy. Variation in time constants for the electron-phonon relaxation in different solvents is rationalized on the basis of their thermal conductivities, which govern the rate of dissipation of heat of photoexcited electrons in the nanoparticles. On the other hand, phonon-phonon relaxation is found to be much less effective than electron-phonon relaxation for the dissipation of energy of the excited electron and the time constants associated with it remain unaffected by thermal conductivity of the solvent.
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Affiliation(s)
- Hemen Gogoi
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Bala Gopal Maddala
- Department of Chemistry, IIT Bombay, IITB-Monash Research Academy, Mumbai, 400076, India
| | - Fariyad Ali
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Anindya Datta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
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15
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Sygletou M, Benedetti S, Ferrera M, Pierantozzi GM, Cucini R, Della Valle G, Carrara P, De Vita A, di Bona A, Torelli P, Catone D, Panaccione G, Canepa M, Bisio F. Quantitative Ultrafast Electron-Temperature Dynamics in Photo-Excited Au Nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2100050. [PMID: 34061425 DOI: 10.1002/smll.202100050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 04/16/2021] [Indexed: 06/12/2023]
Abstract
The femtosecond evolution of the electronic temperature of laser-excited gold nanoparticles is measured, by means of ultrafast time-resolved photoemission spectroscopy induced by extreme-ultraviolet radiation pulses. The temperature of the electron gas is deduced by recording and fitting high-resolution photo emission spectra around the Fermi edge of gold nanoparticles providing a direct, unambiguous picture of the ultrafast electron-gas dynamics. These results will be instrumental to the refinement of existing models of femtosecond processes in laterally-confined and bulk condensed-matter systems, and for understanding more deeply the role of hot electrons in technological applications.
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Affiliation(s)
- Maria Sygletou
- OptMatLab, Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146, Genova, Italy
| | | | - Marzia Ferrera
- OptMatLab, Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146, Genova, Italy
| | - Gian Marco Pierantozzi
- Istituto Officina dei Materiali-CNR, Laboratorio TASC, Area Science Park, S.S. 14, Km 163.5, Trieste, I-34149, Italy
| | - Riccardo Cucini
- Istituto Officina dei Materiali-CNR, Laboratorio TASC, Area Science Park, S.S. 14, Km 163.5, Trieste, I-34149, Italy
| | - Giuseppe Della Valle
- Dipartimento di Fisica, IFN-CNR, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133, Milano, Italy
| | - Pietro Carrara
- Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, Milano, Italy
| | - Alessandro De Vita
- Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, Milano, Italy
| | | | - Piero Torelli
- Istituto Officina dei Materiali-CNR, Laboratorio TASC, Area Science Park, S.S. 14, Km 163.5, Trieste, I-34149, Italy
| | - Daniele Catone
- Istituto di Struttura della Materia - CNR (ISM-CNR), EuroFEL Support Laboratory (EFSL), Via del Fosso del Cavaliere, 100, I-00133, Rome, Italy
| | - Giancarlo Panaccione
- Istituto Officina dei Materiali-CNR, Laboratorio TASC, Area Science Park, S.S. 14, Km 163.5, Trieste, I-34149, Italy
| | - Maurizio Canepa
- OptMatLab, Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146, Genova, Italy
| | - Francesco Bisio
- CNR-SPIN Istituto Superconduttori Materiali Innovativi e Dispositivi, C.so Perrone 24, I-16152, Genova, Italy
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16
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Abstract
Resonant nonlinear optical absorption of silver nanoparticles was studied experimentally via open aperture Z-scan using 130 fs, 400 nm laser pulses. Experimental results show that, at low laser intensity, silver nanoparticles can exhibit saturated absorption. While at high laser intensity, it shows reverse saturated absorption. The saturable absorption is explained in terms of ground state plasmon bleaching, while the reverse saturable absorption is believed to be from two-photon absorption. Saturable optical intensity and two-photon absorption coefficient were obtained to be 1.3×1010 W/m2 and 3.3×10−10 m/W, respectively. The energy relaxation process of Ag nanoparticles after laser excitation was studied via pump-probe technique at 400 nm. Experimental results demonstrated that energy relaxation included electron-phonon coupling process with time constant τ1=(713±50) fs, and phonon-phonon coupling process with time constant τ2=(25.2±3) ps, respectively.
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17
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Zhou M, Jin R. Optical Properties and Excited-State Dynamics of Atomically Precise Gold Nanoclusters. Annu Rev Phys Chem 2021; 72:121-142. [PMID: 33297734 DOI: 10.1146/annurev-physchem-090419-104921] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Understanding the excited-state dynamics of nanomaterials is essential to their applications in photoenergy storage and conversion. This review summarizes recent progress in the excited-state dynamics of atomically precise gold (Au) nanoclusters (NCs). We first discuss the electronic structure and typical relaxation pathways of Au NCs from subpicoseconds to microseconds. Unlike plasmonic Au nanoparticles, in which collective electron excitation dominates, Au NCs show single-electron transitions and molecule-like exciton dynamics. The size-, shape-, structure-, and composition-dependent dynamics in Au NCs are further discussed in detail. For small-sized Au NCs, strong quantum confinement effects give rise to relaxation dynamics that is significantly dependent on atomic packing, shape, and heteroatom doping. For relatively larger-sized Au NCs, strong size dependence can be observed in exciton and electron dynamics. We also discuss the origin of coherent oscillations and their roles in excited-state relaxation. Finally, we provide our perspective on future directions in this area.
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Affiliation(s)
- Meng Zhou
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA;
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA;
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18
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Ng KM, Lai SKM, Chen Z, Cheng YH, Tang HW, Huang W, Su Y, Yang J. Harvesting More Energetic Photoexcited Electrons from Closely Packed Gold Nanoparticles. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2021; 32:815-824. [PMID: 33555854 DOI: 10.1021/jasms.0c00480] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The characterization of photoexcited electrons on the surface of nanomaterial remains challenging. Herein, laser excitation mass spectrometry combined with a chemical thermometer and electron acceptor has been developed to characterize the energetics and population density of photoexcited electrons transferred from gold nanoparticles (AuNPs). In contrast to laser fluence and bias voltage, the hot spots of closely packed AuNPs play a more significant role in enhancing the average energetics of photoexcited electrons, which can be harvested effectively by the electron acceptor. By harvesting more energetic photoexcited electrons for the desorption and ionization process, it is anticipated that the sensitive detection of biomarkers can be achieved, which is beneficial to metabolomic studies and early disease diagnosis.
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Affiliation(s)
- Kwan-Ming Ng
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, P. R. China
| | - Samuel Kin-Man Lai
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong S.A.R., P. R. China
| | - Ziyong Chen
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong S.A.R., P. R. China
| | - Yu-Hong Cheng
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong S.A.R., P. R. China
| | - Ho-Wai Tang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong S.A.R., P. R. China
| | - Wei Huang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, P. R. China
| | - Yang Su
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, P. R. China
| | - Jun Yang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong S.A.R., P. R. China
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19
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Guan G, Win KY, Yao X, Yang W, Han M. Plasmonically Modulated Gold Nanostructures for Photothermal Ablation of Bacteria. Adv Healthc Mater 2021; 10:e2001158. [PMID: 33184997 DOI: 10.1002/adhm.202001158] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 10/18/2020] [Indexed: 12/11/2022]
Abstract
With the wide utilization of antibiotics, antibiotic-resistant bacteria have been often developed more frequently to cause potential global catastrophic consequences. Emerging photothermal ablation has been attracting extensive research interest for quick/effective eradication of pathogenic bacteria from contaminated surroundings and infected body. In this field, anisotropic gold nanostructures with tunable size/morphologies have been demonstrated to exhibit their outstanding photothermal performance through strong plasmonic absorption of near-infrared (NIR) light, efficient light to heat conversion, and easy surface modification for targeting bacteria. To this end, this review first introduces thermal treatment of infectious diseases followed by photothermal therapy via heat generation on NIR-absorbing gold nanostructures. Then, the usual synthesis and spectral features of diversified gold nanostructures and composites are systematically overviewed with the emphasis on the importance of size, shape, and composition to achieve strong plasmonic absorption in NIR region. Further, the innovated photothermal applications of gold nanostructures are comprehensively demonstrated to combat against bacterial infections, and some constructive suggestions are also discussed to improve photothermal technologies for practical applications.
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Affiliation(s)
- Guijian Guan
- Institute of Molecular Plus Tianjin University No.11 Building, 92 Weijin Road, Nankai District Tianjin 300072 P.R. China
| | - Khin Yin Win
- Institute of Materials Research and Engineering A*STAR 2 Fusionopolis Way Singapore 138634 Singapore
| | - Xiang Yao
- Institute of Molecular Plus Tianjin University No.11 Building, 92 Weijin Road, Nankai District Tianjin 300072 P.R. China
| | - Wensheng Yang
- Institute of Molecular Plus Tianjin University No.11 Building, 92 Weijin Road, Nankai District Tianjin 300072 P.R. China
| | - Ming‐Yong Han
- Institute of Molecular Plus Tianjin University No.11 Building, 92 Weijin Road, Nankai District Tianjin 300072 P.R. China
- Institute of Materials Research and Engineering A*STAR 2 Fusionopolis Way Singapore 138634 Singapore
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20
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Chen Y, He Y, Wang J, Li M, Yu M, Ye R, Geng B, Yang Z, Zeng X, Hu J. Segmented Ag-Au-Ag Heterojunction Nanorods: Pressure-Assisted Aqueous-Phase Synthesis and Engineered Femtosecond-to-Nanosecond Dynamics. J Phys Chem Lett 2021; 12:989-996. [PMID: 33464906 DOI: 10.1021/acs.jpclett.0c03598] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Segmented metal-metal heterostructure nanorods/nanowires are very promising for development in photoelectric devices, wearable electronics, biomedicine, and energy storage due to unique surface and interface and adjustable electronic and optical properties. Regretfully, most of the segmented heterojunctions are presently synthesized in organic solvent, and its electronic dynamics is still rarely studied and poorly understood. Here, we reported a pressure-assisted one-step aqueous-phase strategy to successfully synthesize segmented Ag-Au-Ag heterojunction nanorods (HJNRs), the aspect ratios and heterojunction contents of which can be well controlled by varying pressure value. The heterojunction-induced femtosecond-to-nanosecond dynamics in 1D direction of the Ag-Au-Ag HJNRs were for the first time acquired and presented a unique regularity tendency (e.g., electron-phonon scattering time). The unprecedented aqueous-phase strategy opens up horizons of synthesis of other segmented metal-metal HJNRs, and the fascinating Ag-Au-Ag HJNRs are hopeful for the development of a new class devices in photothermal and photoelectronic fields.
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Affiliation(s)
- Yuyu Chen
- Key Lab of Fuel Cell Technology of Guangdong Province, Department of Chemistry, College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yonglin He
- Department of Physics, Xiamen University, Xiamen 361005, China
| | - Jingyu Wang
- Department of Physics, Xiamen University, Xiamen 361005, China
| | - Mingde Li
- Department of Chemistry and Key Laboratory pf Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Meng Yu
- Key Lab of Fuel Cell Technology of Guangdong Province, Department of Chemistry, College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Rongkai Ye
- Key Lab of Fuel Cell Technology of Guangdong Province, Department of Chemistry, College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Bijun Geng
- Key Lab of Fuel Cell Technology of Guangdong Province, Department of Chemistry, College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhilin Yang
- Department of Physics, Xiamen University, Xiamen 361005, China
| | - Xiaobing Zeng
- Key Lab of Fuel Cell Technology of Guangdong Province, Department of Chemistry, College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jianqiang Hu
- Key Lab of Fuel Cell Technology of Guangdong Province, Department of Chemistry, College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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21
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Hattori Y, Meng J, Zheng K, Meier de Andrade A, Kullgren J, Broqvist P, Nordlander P, Sá J. Phonon-Assisted Hot Carrier Generation in Plasmonic Semiconductor Systems. NANO LETTERS 2021; 21:1083-1089. [PMID: 33416331 PMCID: PMC7877730 DOI: 10.1021/acs.nanolett.0c04419] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/06/2021] [Indexed: 05/23/2023]
Abstract
Plasmonic materials have optical cross sections that exceed by 10-fold their geometric sizes, making them uniquely suitable to convert light into electrical charges. Harvesting plasmon-generated hot carriers is of interest for the broad fields of photovoltaics and photocatalysis; however, their direct utilization is limited by their ultrafast thermalization in metals. To prolong the lifetime of hot carriers, one can place acceptor materials, such as semiconductors, in direct contact with the plasmonic system. Herein, we report the effect of operating temperature on hot electron generation and transfer to a suitable semiconductor. We found that an increase in the operation temperature improves hot electron harvesting in a plasmonic semiconductor hybrid system, contrasting what is observed on photodriven processes in nonplasmonic systems. The effect appears to be related to an enhancement in hot carrier generation due to phonon coupling. This discovery provides a new strategy for optimization of photodriven energy production and chemical synthesis.
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Affiliation(s)
- Yocefu Hattori
- Physical
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
| | - Jie Meng
- Department
of Chemistry, Technical University of Denmark, DK-2800 Kongens
Lyngby, Denmark
| | - Kaibo Zheng
- Department
of Chemistry, Technical University of Denmark, DK-2800 Kongens
Lyngby, Denmark
- Chemical
Physics and NanoLund, Lund University, Box 124, 22100 Lund, Sweden
| | - Ageo Meier de Andrade
- Structural
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
| | - Jolla Kullgren
- Structural
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
| | - Peter Broqvist
- Structural
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
| | - Peter Nordlander
- Department
of Physics, Rice University, 6100 South Main Street, Houston, Texas 77251-1892, United States
| | - Jacinto Sá
- Physical
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
- Institute
of Physical Chemistry, Polish Academy of
Sciences, 01-224 Warsaw, Poland
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22
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Fagan AM, Jeffries WR, Knappenberger KL, Schaak RE. Synthetic Control of Hot-Electron Thermalization Efficiency in Size-Tunable Au-Pt Hybrid Nanoparticles. ACS NANO 2021; 15:1378-1387. [PMID: 33337141 DOI: 10.1021/acsnano.0c08661] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Gold nanoparticles are well-known to exhibit size-dependent properties that are responsible for their unique catalytic, optical, and electronic applications. However, electron-phonon coupling, which is important for photocatalysis and light harvesting, is one of the rare properties of gold that is size-independent above a threshold value, e.g., for nanospheres larger than approximately 5 nm in diameter. Here, we show that when interfaced to a comparably sized Pt nanoparticle, the electron-phonon coupling constant of the hybrid material depends on the diameter of the Au domain. This is important because the electron-phonon coupling constant describes the efficiency by which hot electrons are converted to local heat by the primary electron-phonon scattering thermalization channel. We begin by synthesizing a library of Au-Pt hybrid nanoparticle heterodimers by growing size-tunable Au nanoparticles on Pt nanoparticle seeds. By systematically varying reagent concentration and reaction time, the Au domain diameter of the Au-Pt hybrid nanoparticle heterodimers can be tuned between 4.4 and 16 nm while the size of the Pt domain remains constant. Calibration curves allow us to dial in precise Au domain sizes, and microscopic analysis of the Au-Pt heterodimers provides insights into how they grow and how their morphologies evolve. Femtosecond time-resolved transient absorption spectroscopy reveals that for Au-Pt heterodimers having Au domain diameters of 8.7 to 14 nm, the electron-phonon coupling constant decreases by more than 80%, which is not observed for comparably sized Au nanoparticles. Interfacing smaller Au domains with Pt nanoparticle surfaces causes an increase in the density of states near the Fermi level of Au, which results in accelerated thermalization times through an increased number of electron-phonon interactions. The combination of precision hybrid nanoparticle synthesis and size-dependent electron-phonon coupling may be important for designing composite metals for photocatalytic and light-harvesting applications and for engineering different functions into established materials.
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23
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Jeffries WR, Park K, Vaia RA, Knappenberger KL. Resolving Electron-Electron Scattering in Plasmonic Nanorod Ensembles Using Two-Dimensional Electronic Spectroscopy. NANO LETTERS 2020; 20:7722-7727. [PMID: 32931697 DOI: 10.1021/acs.nanolett.0c03272] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The use of two-dimensional electronic spectroscopy (2DES) to study electron-electron scattering dynamics in plasmonic gold nanorods is described. The 2DES resolved the time-dependent plasmon homogeneous line width Γh(t), which was sensitive to changes in Fermi-level carrier densities. This approach was effective because electronic excitation accelerated plasmon dephasing, which broadened Γh. Analysis of Γh(t) indicated plasmon coherence times were decreased by 20-50%, depending on excitation conditions. Electron-electron scattering rates of approximately 0.01 fs-1 were obtained by fitting the time-dependent Γh broadening; rates increased quadratically with both excitation pulse energy and frequency. This rate dependence agreed with Fermi-liquid theory-based predictions. Hot electron thermalization through electron-phonon scattering resulted in Γh narrowing. To our knowledge, this is the first use of the plasmon Γh(t) to isolate electron-electron scattering dynamics in colloidal metal nanoparticles. These results illustrate the effectiveness of 2DES for studying hot electron dynamics of solution-phase plasmonic ensembles.
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Affiliation(s)
- William R Jeffries
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Kyoungweon Park
- Air Force Research Laboratory, 2941 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433, United States
| | - Richard A Vaia
- Air Force Research Laboratory, 2941 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433, United States
| | - Kenneth L Knappenberger
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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24
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Madhyastha H, Madhyastha R, Thakur A, Kentaro S, Dev A, Singh S, Chandrashekharappa R B, Kumar H, Acevedo O, Nakajima Y, Daima HK, Aradhya A, Nagaraj P N, Maruyama M. c-Phycocyanin primed silver nano conjugates: Studies on red blood cell stress resilience mechanism. Colloids Surf B Biointerfaces 2020; 194:111211. [PMID: 32615521 DOI: 10.1016/j.colsurfb.2020.111211] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/04/2020] [Accepted: 06/20/2020] [Indexed: 12/20/2022]
Abstract
Green synthesis of metal-encased nutraceutical nano-hybrids has been a target for research over the last few years. In the present investigation, we have reported temperature dependent facile synthesis of silver nanoparticles using FDA approved c phycocyanin (cPC). The cPC conjugated silver nanoparticles (AgcPCNPs) were characterized by TEM, Zeta Potential, UV-vis, XPS, FTIR, and CD Spectroscopy. The temperature optimization studies suggested the synthesis of stable AgcPCNPs at 40 °C while at higher temperature system shows aggregated appearance. Molecular docking studies predicted the exclusive interaction of C, D, I, and J chains of cPC with the surface of AgNPs. Moreover, AgcPCNPs significantly (p < 0.1 %) counteract the toxic nature of AgNPs on red blood cell by measuring parameters like total RBC count, % hemolysis, % hematocrit, coagulation time, pH, electrolyte concentrations and degree of blood cell lipid peroxidation by the anti-oxidation mechanism. Skin fibroblast in vitro cell migration result suggeststhat AgcPCNPs enhanced the degree of cell movement towards the wound area. Data obtained collectively demonstrate that AgcPCNPs can be a better agent in the dermal wound healing with reduced toxicity with the bi-phasic advantage of cPC as a wound healer and Ag nano-metal as an anti-bacterial agent.
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Affiliation(s)
- Harishkumar Madhyastha
- Department of Applied Physiology, School of Medicine, University of Miyazaki, Miyazaki, 889 1692, Japan.
| | - Radha Madhyastha
- Department of Applied Physiology, School of Medicine, University of Miyazaki, Miyazaki, 889 1692, Japan
| | - Abhishek Thakur
- Department of Chemistry, University of Miami, Coral Gables, FL, 33146, United States
| | - Sakai Kentaro
- Center for Collaborative Research and Community Corporation, Division of Materials Research, University of Miyazaki, Miyazaki, 889 2192, Japan
| | - Abhimanyu Dev
- Department of Pharmaceutical Science and Technology, Birla Institute of Technology Mesra, Ranchi, 835215, India
| | - Sneha Singh
- Department of Bioengineering, Birla Institute of Technology Mesra, Ranchi, 835215, India
| | - Bistivalli Chandrashekharappa R
- Department of Pharmaceutical Chemistry, NGSM Institute of Pharmaceutical Sciences, Nitte (Deemed to be) University, Paneer Campus, Mangaluru, 575018, Karnataka, India
| | - Hemanth Kumar
- Department of Pharmaceutical Chemistry, NGSM Institute of Pharmaceutical Sciences, Nitte (Deemed to be) University, Paneer Campus, Mangaluru, 575018, Karnataka, India
| | - Orlando Acevedo
- Department of Chemistry, University of Miami, Coral Gables, FL, 33146, United States
| | - Yuichi Nakajima
- Department of Applied Physiology, School of Medicine, University of Miyazaki, Miyazaki, 889 1692, Japan
| | - Hemant Kumar Daima
- Amity Center for Nanobiotechnology and Nanomedcine (ACNN), Amity Institute of Biotechnology, Amity University, Rajasthan, Kant-Kalwar, Jaipur-Delhi Highway, Jaipur, 303002, India
| | - Akhela Aradhya
- Amity Center for Nanobiotechnology and Nanomedcine (ACNN), Amity Institute of Biotechnology, Amity University, Rajasthan, Kant-Kalwar, Jaipur-Delhi Highway, Jaipur, 303002, India
| | - Navya Nagaraj P
- Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Erode, 638401, Tamilnadu, India
| | - Masugi Maruyama
- Department of Applied Physiology, School of Medicine, University of Miyazaki, Miyazaki, 889 1692, Japan
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25
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Ostovar B, Su MN, Renard D, Clark BD, Dongare PD, Dutta C, Gross N, Sader JE, Landes CF, Chang WS, Halas NJ, Link S. Acoustic Vibrations of Al Nanocrystals: Size, Shape, and Crystallinity Revealed by Single-Particle Transient Extinction Spectroscopy. J Phys Chem A 2020; 124:3924-3934. [PMID: 32286064 DOI: 10.1021/acs.jpca.0c01190] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Acoustic vibrations in plasmonic nanoparticles, monitored by an all-optical means, have attracted significant increasing interest because they provide unique insight into the mechanical properties of these metallic nanostructures. Al nanostructures are a recently emerging alternative to noble metal nanoparticles, because their broad wavelength tunability and high natural abundance make them ideal for many potential applications. Here, we investigate the acoustic vibrations of individual Al nanocrystals using a combination of electron microscopy and single-particle transient extinction spectroscopy, made possible with a low-pulse energy, high sensitivity, and probe-wavelength-tunable, single-particle transient extinction microscope. For chemically synthesized, faceted Al nanocrystals, the observed vibration frequency scales with the inverse particle diameter. In contrast, triangularly shaped Al nanocrystals support two distinct frequencies, corresponding to their in- and out-of-plane breathing modes. Unlike ensemble measurements, which measure average properties, measuring the damping time of the acoustic vibrations for individual particles enables us to investigate variations of the quality factor on the particle-to-particle level. Surprisingly, we find a large variation in quality factors even for nanocrystals of similar size and shape. This observed heterogeneity appears to result from substantially varying degrees of nanoparticle crystallinity even for chemically synthesized nanocrystals.
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Affiliation(s)
| | | | | | | | | | | | | | - John E Sader
- ARC Centre of Excellence in Exciton Science, School of Mathematics and Statistics, The University of Melbourne, Parkville, VIC 3010, Australia
| | | | - Wei-Shun Chang
- Department of Chemistry and Biochemistry, University of Massachusetts Dartmouth, 285 Old Westport Road, North Dartmouth, Massachusetts 02747, United States
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26
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Guzelturk B, Utterback JK, Coropceanu I, Kamysbayev V, Janke EM, Zajac M, Yazdani N, Cotts BL, Park S, Sood A, Lin MF, Reid AH, Kozina ME, Shen X, Weathersby SP, Wood V, Salleo A, Wang X, Talapin DV, Ginsberg NS, Lindenberg AM. Nonequilibrium Thermodynamics of Colloidal Gold Nanocrystals Monitored by Ultrafast Electron Diffraction and Optical Scattering Microscopy. ACS NANO 2020; 14:4792-4804. [PMID: 32208676 DOI: 10.1021/acsnano.0c00673] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Metal nanocrystals exhibit important optoelectronic and photocatalytic functionalities in response to light. These dynamic energy conversion processes have been commonly studied by transient optical probes to date, but an understanding of the atomistic response following photoexcitation has remained elusive. Here, we use femtosecond resolution electron diffraction to investigate transient lattice responses in optically excited colloidal gold nanocrystals, revealing the effects of nanocrystal size and surface ligands on the electron-phonon coupling and thermal relaxation dynamics. First, we uncover a strong size effect on the electron-phonon coupling, which arises from reduced dielectric screening at the nanocrystal surfaces and prevails independent of the optical excitation mechanism (i.e., inter- and intraband). Second, we find that surface ligands act as a tuning parameter for hot carrier cooling. Particularly, gold nanocrystals with thiol-based ligands show significantly slower carrier cooling as compared to amine-based ligands under intraband optical excitation due to electronic coupling at the nanocrystal/ligand interfaces. Finally, we spatiotemporally resolve thermal transport and heat dissipation in photoexcited nanocrystal films by combining electron diffraction with stroboscopic elastic scattering microscopy. Taken together, we resolve the distinct thermal relaxation time scales ranging from 1 ps to 100 ns associated with the multiple interfaces through which heat flows at the nanoscale. Our findings provide insights into optimization of gold nanocrystals and their thin films for photocatalysis and thermoelectric applications.
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Affiliation(s)
- Burak Guzelturk
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025 United States
| | - James K Utterback
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Igor Coropceanu
- Department of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, United States
| | - Vladislav Kamysbayev
- Department of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, United States
| | - Eric M Janke
- Department of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, United States
| | - Marc Zajac
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Nuri Yazdani
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025 United States
- Department of Information Technology and Electrical Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Benjamin L Cotts
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Suji Park
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025 United States
| | - Aditya Sood
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025 United States
| | - Ming-Fu Lin
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Alexander H Reid
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Michael E Kozina
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Xiaozhe Shen
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Stephen P Weathersby
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Vanessa Wood
- Department of Information Technology and Electrical Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Alberto Salleo
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Xijie Wang
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Dmitri V Talapin
- Department of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, United States
| | - Naomi S Ginsberg
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Department of Physics, University of California, Berkeley, California 94720, United States
- Molecular Biophysics and Integrated Bioimaging Division and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy NanoSciences Institute, Berkeley, California 94720, United States
| | - Aaron M Lindenberg
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025 United States
- The PULSE Institute for Ultrafast Energy Science, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
- Department of Photon Science, Stanford University and SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
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27
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Mideksa MF, Liu H, Wang F, Ali W, Li H, Wang X, Tang Z. Configuration-Modulated Hot Electron Dynamics of Gold Nanorod Assemblies. J Phys Chem Lett 2019; 10:6578-6583. [PMID: 31597430 DOI: 10.1021/acs.jpclett.9b02839] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Comprehension and modulation of hot electron dynamics at an ultrafast time scale are crucial for exploring the hot electron-assisted energy transfer processes. Here, we report the hot electron dynamics of dispersed gold nanorods and their controlled assemblies measured by time-resolved pump-probe spectroscopy. Both assembly configurations are shown to accelerate the hot electron decay in comparison with dispersed nanorods. The hot electron dynamics exhibit different variations with aspect ratio in transverse and longitudinal polarizations. The hot electron lifetime and the spectral signature of the induced absorption modification are found to be highly sensitive to photon energy as well as assembly configuration and aspect ratios, showing different contributions of plasmon coupling and electron-surface scattering. This work not only improves the understanding of the underlying mechanisms of hot electron dynamics but also paves the way to optimize performance characteristics of hot carrier-assisted photocatalysis, photovoltaics, and all-optical high-rate photonic processing applications.
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Affiliation(s)
- Megersa Feyissa Mideksa
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Hongyan Liu
- Beijing Institute of Aeronautical Materials , Beijing 100095 , P. R. China
| | - Fei Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Wajid Ali
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Hongdong Li
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Xiaoli Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Zhiyong Tang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
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28
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Devkota T, Brown BS, Beane G, Yu K, Hartland GV. Making waves: Radiation damping in metallic nanostructures. J Chem Phys 2019; 151:080901. [PMID: 31470703 DOI: 10.1063/1.5117230] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Metal nanostructures display several types of resonances. In the visible and near-IR spectral regions, there are localized surface plasmon resonances (LSPRs) that involve the coherent oscillation of the conduction electrons. Extended metal nanostructures, such as nanowires or nanoplates, also exhibit propagating surface plasmon polaritons (PSPPs), which are motions of the electrons at the surface of the structure that have a well-defined momentum. In addition, the vibrational normal modes of metal nanostructures give rise to low frequency resonances in the gigahertz to terahertz range. These different types of motions/resonances suffer energy losses from internal effects and from interactions with the environment. The goal of this perspective is to describe the part of the energy relaxation process due to the environment. Even though the plasmon resonances and acoustic vibrational modes arise from very different physics, it turns out that environmental damping is dominated by radiation of waves. The way the rates for radiation damping depend on the size of the nanostructure and the properties of the environment will be discussed for the different processes. For example, it is well known that for LSPRs, the rate of radiation damping increases with particle size. However, the radiation damping rate decreases with increasing dimensions for PSPPs and for the acoustic vibrational modes.
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Affiliation(s)
- Tuphan Devkota
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Brendan S Brown
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Gary Beane
- ARC Center of Excellence in Future Low-Energy Electronic Technologies, Monash University, Clayton, VIC 3800, Australia
| | - Kuai Yu
- College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, People's Republic of China
| | - Gregory V Hartland
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA
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29
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Anomalous phonon relaxation in Au 333(SR) 79 nanoparticles with nascent plasmons. Proc Natl Acad Sci U S A 2019; 116:13215-13220. [PMID: 31209027 DOI: 10.1073/pnas.1904337116] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Research on plasmons of gold nanoparticles has gained broad interest in nanoscience. However, ultrasmall sizes near the metal-to-nonmetal transition regime have not been explored until recently due to major synthetic difficulties. Herein, intriguing electron dynamics in this size regime is observed in atomically precise Au333(SR)79 nanoparticles. Femtosecond transient-absorption spectroscopy reveals an unprecedented relaxation process of 4-5 ps-a fast phonon-phonon relaxation process, together with electron-phonon coupling (∼1 ps) and normal phonon-phonon coupling (>100 ps) processes. Three types of -R capped Au333(SR)79 all exhibit two plasmon-bleaching signals independent of the -R group as well as solvent, indicating plasmon splitting and quantum effect in the ultrasmall core of Au333(SR)79 This work is expected to stimulate future work on the transition-size regime of nanometals and discovery of behavior of nascent plasmons.
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30
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Hattori Y, Abdellah M, Meng J, Zheng K, Sá J. Simultaneous Hot Electron and Hole Injection upon Excitation of Gold Surface Plasmon. J Phys Chem Lett 2019; 10:3140-3146. [PMID: 31117685 DOI: 10.1021/acs.jpclett.9b01085] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We have successfully investigated the simultaneous injection of hot electrons and holes upon excitation of gold localized surface plasmon resonance (LSPR). The studies were performed on all-solid-state plasmonic system composed of titanium dioxide (TiO2)/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) p-n junctions with gold nanoparticles (Au NPs). The study revealed that both charge carriers are transferred within 200 fs to the respective charge acceptors, exhibiting a free carrier transport behavior. We also confirmed that the transfer of charge carriers are accompanied by change in the initial relaxation dynamics of Au NPs.
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Affiliation(s)
- Yocefu Hattori
- Physical Chemistry Division, Department of Chemistry, Ångström Laboratory , Uppsala University , 75120 Uppsala , Sweden
| | - Mohamed Abdellah
- Physical Chemistry Division, Department of Chemistry, Ångström Laboratory , Uppsala University , 75120 Uppsala , Sweden
- Department of Chemistry, Qena Faculty of Science , South Valley University , 83523 Qena , Egypt
| | - Jie Meng
- Department of Chemistry , Technical University of Denmark , DK-2800 Kongens Lyngby , Denmark
| | - Kaibo Zheng
- Department of Chemistry , Technical University of Denmark , DK-2800 Kongens Lyngby , Denmark
- Chemical Physics and NanoLund , Lund University , Box 124, 22100 Lund , Sweden
| | - Jacinto Sá
- Physical Chemistry Division, Department of Chemistry, Ångström Laboratory , Uppsala University , 75120 Uppsala , Sweden
- Institute of Physical Chemistry , Polish Academy of Sciences , 01-224 Warsaw , Poland
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31
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Su MN, Ciccarino CJ, Kumar S, Dongare PD, Hosseini Jebeli SA, Renard D, Zhang Y, Ostovar B, Chang WS, Nordlander P, Halas NJ, Sundararaman R, Narang P, Link S. Ultrafast Electron Dynamics in Single Aluminum Nanostructures. NANO LETTERS 2019; 19:3091-3097. [PMID: 30935208 DOI: 10.1021/acs.nanolett.9b00503] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Aluminum nanostructures are a promising alternative material to noble metal nanostructures for several photonic and catalytic applications, but their ultrafast electron dynamics remain elusive. Here, we combine single-particle transient extinction spectroscopy and parameter-free first-principles calculations to investigate the non-equilibrium carrier dynamics in aluminum nanostructures. Unlike gold nanostructures, we find the sub-picosecond optical response of lithographically fabricated aluminum nanodisks to be more sensitive to the lattice temperature than the electron temperature. We assign the rise in the transient transmission to electron-phonon coupling with a pump-power-independent lifetime of 500 ± 100 fs and theoretically confirm this strong electron-phonon coupling behavior. We also measure electron-phonon lifetimes in chemically synthesized aluminum nanocrystals and find them to be even longer (1.0 ± 0.1 ps) than for the nanodisks. We also observe a rise and decay in the transient transmissions with amplitudes that scale with the surface-to-volume ratio of the aluminum nanodisks, implying a possible hot carrier trapping and detrapping at the native oxide shell-metal core interface.
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Affiliation(s)
| | | | - Sushant Kumar
- Department of Materials Science and Engineering , Rensselaer Polytechnic Institute , Troy , New York 12180 , United States
| | | | | | | | | | | | | | | | | | - Ravishankar Sundararaman
- Department of Materials Science and Engineering , Rensselaer Polytechnic Institute , Troy , New York 12180 , United States
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32
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Mongin D, Maioli P, Burgin J, Langot P, Cottancin E, D'Addato S, Canut B, Treguer M, Crut A, Vallée F, Del Fatti N. Ultrafast electron-lattice thermalization in copper and other noble metal nanoparticles. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2019; 31:084001. [PMID: 30620724 DOI: 10.1088/1361-648x/aaf7eb] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Using time-resolved ultrafast pump-probe spectroscopy we investigated the electron-lattice energy transfer in small copper nanospheres with diameters ranging from 3.2 to 23 nm, either embedded in a glass or dispersed in a solvent. Electron-lattice scattering rate is shown to increase with size reduction, in agreement with our previous results obtained on gold and silver nanoparticles in the low excitation regime. We attribute this effect to the reduction of the screening efficiency of electron-phonon interactions close to the nanoparticle surface. To understand the discrepancy between the results on the electron-lattice scattering in different metals reported in the literature (reduction, no dependence or increase with nanoparticle size), we discuss the experimental conditions required for the accurate determination of electron-lattice energy transfer time from time-resolved investigations in the weak and strong excitation regimes and present power-dependent experiments on gold nanospheres in solution. Our findings are derived from a theoretical analysis based on the two-temperature model predictions and on a complete modeling of the nanoparticle transient extinction cross-section through the resolution of Boltzmann equation in the presence of hot electrons.
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Affiliation(s)
- Denis Mongin
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, Institut Lumière Matière, UMR 5306, F-69622 Villeurbanne, France
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33
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Yang L, Tao Y, Liu J, Liu C, Zhang Q, Akter M, Zhao Y, Xu TT, Xu Y, Mao Z, Chen Y, Li D. Distinct Signatures of Electron-Phonon Coupling Observed in the Lattice Thermal Conductivity of NbSe 3 Nanowires. NANO LETTERS 2019; 19:415-421. [PMID: 30532983 DOI: 10.1021/acs.nanolett.8b04206] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The last two decades have seen tremendous progress in quantitative understanding of several major phonon scattering mechanisms (phonon-phonon, phonon-boundary, phonon-defects), as they are the determinant factors in lattice thermal transport, which is critical for the proper functioning of various electronic and energy conversion devices. However, the roles of another major scattering mechanism, electron-phonon (e-ph) interactions, remain elusive. This is largely due to the lack of solid experimental evidence for the effects of e-ph scattering in the lattice thermal conductivity for the material systems studied thus far. Here we show distinct signatures in the lattice thermal conductivity observed below the charge density wave transition temperatures in NbSe3 nanowires, which cannot be recaptured without considering e-ph scattering. Our findings can serve as the cornerstone for quantitative understanding of the e-ph scattering effects on lattice thermal transport in many technologically important materials.
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Affiliation(s)
- Lin Yang
- Department of Mechanical Engineering , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Yi Tao
- School of Mechanical Engineering and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments , Southeast University , Nanjing 210096 , People's Republic of China
| | - Jinyu Liu
- Department of Physics and Engineering Physics , Tulane University , New Orleans , Louisiana 70118 , United States
| | - Chenhan Liu
- School of Mechanical Engineering and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments , Southeast University , Nanjing 210096 , People's Republic of China
| | - Qian Zhang
- Department of Mechanical Engineering , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Manira Akter
- Department of Mechanical Engineering and Engineering Science , The University of North Carolina at Charlotte , Charlotte , North Carolina 28223 , United States
| | - Yang Zhao
- Department of Mechanical Engineering , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Terry T Xu
- Department of Mechanical Engineering and Engineering Science , The University of North Carolina at Charlotte , Charlotte , North Carolina 28223 , United States
| | - Yaqiong Xu
- Department of Electrical Engineering and Computer Science , Vanderbilt University , Nashville , Tennessee 37235 , United States
- Department of Physics and Astronomy , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Zhiqiang Mao
- Department of Physics and Engineering Physics , Tulane University , New Orleans , Louisiana 70118 , United States
- Department of Physics , Pennsylvania State University , University Park , Pennsylvania 16802 , United States
| | - Yunfei Chen
- School of Mechanical Engineering and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments , Southeast University , Nanjing 210096 , People's Republic of China
| | - Deyu Li
- Department of Mechanical Engineering , Vanderbilt University , Nashville , Tennessee 37235 , United States
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34
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Beane G, Devkota T, Brown BS, Hartland GV. Ultrafast measurements of the dynamics of single nanostructures: a review. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2019; 82:016401. [PMID: 30485256 DOI: 10.1088/1361-6633/aaea4b] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The ability to study single particles has revolutionized nanoscience. The advantage of single particle spectroscopy measurements compared to conventional ensemble studies is that they remove averaging effects from the different sizes and shapes that are present in the samples. In time-resolved experiments this is important for unraveling homogeneous and inhomogeneous broadening effects in lifetime measurements. In this report, recent progress in the development of ultrafast time-resolved spectroscopic techniques for interrogating single nanostructures will be discussed. The techniques include far-field experiments that utilize high numerical aperture (NA) microscope objectives, near-field scanning optical microscopy (NSOM) measurements, ultrafast electron microscopy (UEM), and time-resolved x-ray diffraction experiments. Examples will be given of the application of these techniques to studying energy relaxation processes in nanoparticles, and the motion of plasmons, excitons and/or charge carriers in different types of nanostructures.
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Affiliation(s)
- Gary Beane
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, United States of America
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35
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Cheng J, Li Y, Plissonneau M, Li J, Li J, Chen R, Tang Z, Pautrot-d'Alençon L, He T, Tréguer-Delapierre M, Delville MH. Plasmon-induced hot electron transfer in AgNW@TiO 2@AuNPs nanostructures. Sci Rep 2018; 8:14136. [PMID: 30237426 PMCID: PMC6148267 DOI: 10.1038/s41598-018-32510-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 09/10/2018] [Indexed: 11/21/2022] Open
Abstract
Compared to the limited absorption cross-section of conventional photoactive TiO2 nanoparticles (NPs), plasmonic metallic nanoparticles can efficiently convert photons from an extended spectrum range into energetic carriers because of the localized surface plasmon resonance (LSPR). Using these metal oxide semiconductors as shells for plasmonic nanoparticles (PNPs) that absorb visible light could extend their applications. The photophysics of such systems is performed using transient absorption measurements and steady extinction simulations and shows that the plasmonic energy transfer from the AgNWs core to the TiO2 shell results from a hot carrier injection process. Lifetimes obtained from photobleaching decay dynamics suggest that (i) the presence of gold nanoparticles (AuNPs) in AgNWs@TiO2@AuNPs systems can further promote the hot carrier transfer process via plasmonic coupling effects and (ii) the carrier dynamics is greatly affected by the shell thickness of TiO2. This result points out a definite direction to design appropriate nanostructures with tunable charge transfer processes toward photo-induced energy conversion applications.
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Affiliation(s)
- Jiaji Cheng
- CNRS, Univ. Bordeaux, ICMCB, UMR 5026, F-33608, Pessac, France.,College of Physics and Energy, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Yiwen Li
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.,The Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, China
| | | | - Jiagen Li
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, People's Republic of China
| | - Junzi Li
- College of Physics and Energy, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Rui Chen
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Zikang Tang
- The Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, China
| | | | - Tingchao He
- College of Physics and Energy, Shenzhen University, Shenzhen, 518060, People's Republic of China.
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36
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Higaki T, Zhou M, Lambright KJ, Kirschbaum K, Sfeir MY, Jin R. Sharp Transition from Nonmetallic Au246 to Metallic Au279 with Nascent Surface Plasmon Resonance. J Am Chem Soc 2018; 140:5691-5695. [DOI: 10.1021/jacs.8b02487] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Tatsuya Higaki
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Meng Zhou
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Kelly J. Lambright
- Department of Chemistry and Biochemistry, University of Toledo, Toledo, Ohio 43606, United States
| | - Kristin Kirschbaum
- Department of Chemistry and Biochemistry, University of Toledo, Toledo, Ohio 43606, United States
| | - Matthew Y. Sfeir
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
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37
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Carattino A, Caldarola M, Orrit M. Gold Nanoparticles as Absolute Nanothermometers. NANO LETTERS 2018; 18:874-880. [PMID: 29272135 PMCID: PMC5817619 DOI: 10.1021/acs.nanolett.7b04145] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 12/21/2017] [Indexed: 05/19/2023]
Abstract
Nanothermometry is a challenging field that can open the door to intriguing questions ranging from biology and medicine to material sciences. Gold nanorods are excellent candidates to act as nanoprobes because they are reasonably bright emitters upon excitation with a monochromatic source. Gold nanoparticles are commonly used in photothermal therapy as efficient transducers of electromagnetic radiation into heat. In this work we use the spectrum of the anti-Stokes emission from gold nanorods irradiated in resonance to measure the absolute temperature of the nanoparticles and their surrounding medium without the need for a previous calibration. We show a 4 K accuracy in the determination of the temperature of the medium with spectral measurements of 180 s integration time. This procedure can be easily implemented in any microscope capable of acquiring emission spectra, and it is not limited to any specific shape of nanoparticles.
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38
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Plech A, Ibrahimkutty S, Reich S, Newby G. Thermal dynamics of pulsed-laser excited gold nanorods in suspension. NANOSCALE 2017; 9:17284-17292. [PMID: 29090293 DOI: 10.1039/c7nr06125k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Photothermal reactions of metallic nanostructures, such as gold nanorods show appealing structural relaxations, such as bubble formation or particle modification. We have employed a pump-probe method to record the structural relaxations of a suspension of gold nanorods upon femtosecond laser excitation by pulsed X-ray scattering both with wide-angle and small-angle sensitivity. Single-pulse reactions include transient bubble formation at 20 J m-2 and irreversible nanorod reshaping at 30 J m-2. Thus the window for reversible excitation is very narrow. Additionally we could map the time-domain and fluence behaviour in a wide range to characterize the relaxations comprehensively. The polarized laser pulse first selectively excites nanorods aligned with the laser electric field, but at higher fluence non-aligned rods are also transformed. At low fluence this transformation happens in the solid state, while at higher fluence the rods melt.
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Affiliation(s)
- Anton Plech
- Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany.
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Weis M, Wilk B, Vaudel G, Balin K, Rapacz R, Bulou A, Arnaud B, Szade J, Ruello P. Quantum size effect on charges and phonons ultrafast dynamics in atomically controlled nanolayers of topological insulators Bi 2Te 3. Sci Rep 2017; 7:13782. [PMID: 29061972 PMCID: PMC5653873 DOI: 10.1038/s41598-017-12920-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 09/11/2017] [Indexed: 12/02/2022] Open
Abstract
Heralded as one of the key elements for next generation spintronics devices, topological insulators (TIs) are now step by step envisioned as nanodevices like charge-to-spin current conversion or as Dirac fermions based nanometer Schottky diode for example. However, reduced to few nanometers, TIs layers exhibit a profound modification of the electronic structure and the consequence of this quantum size effect on the fundamental carriers and phonons ultrafast dynamics has been poorly investigated so far. Here, thanks to a complete study of a set of high quality molecular beam epitaxy grown nanolayers, we report the existence of a critical thickness of around ~6 nm, below which a spectacular reduction of the carrier relaxation time by a factor of ten is found in comparison to bulk Bi2 Te3 In addition, we also evidence an A1g optical phonon mode softening together with the appearance of a thickness dependence of the photoinduced coherent acoustic phonons signals. This drastic evolution of the carriers and phonons dynamics might be due an important electron-phonon coupling evolution due to the quantum confinement. These properties have to be taken into account for future TIs-based spintronic devices.
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Affiliation(s)
- M Weis
- A. Chelkowski Institute of Physics and Silesian Center for Education and Interdisciplinary Research,75 Pulku Piechoty 1A University of Silesia, 41-500, Chorzów, Poland
- Institut des Molécules et Matériaux du Mans, UMR CNRS 6283, Université du Maine, 72085 Le, Mans, France
| | - B Wilk
- A. Chelkowski Institute of Physics and Silesian Center for Education and Interdisciplinary Research,75 Pulku Piechoty 1A University of Silesia, 41-500, Chorzów, Poland
- Institut des Molécules et Matériaux du Mans, UMR CNRS 6283, Université du Maine, 72085 Le, Mans, France
| | - G Vaudel
- Institut des Molécules et Matériaux du Mans, UMR CNRS 6283, Université du Maine, 72085 Le, Mans, France
| | - K Balin
- A. Chelkowski Institute of Physics and Silesian Center for Education and Interdisciplinary Research,75 Pulku Piechoty 1A University of Silesia, 41-500, Chorzów, Poland
| | - R Rapacz
- A. Chelkowski Institute of Physics and Silesian Center for Education and Interdisciplinary Research,75 Pulku Piechoty 1A University of Silesia, 41-500, Chorzów, Poland
| | - A Bulou
- Institut des Molécules et Matériaux du Mans, UMR CNRS 6283, Université du Maine, 72085 Le, Mans, France
| | - B Arnaud
- Institut des Molécules et Matériaux du Mans, UMR CNRS 6283, Université du Maine, 72085 Le, Mans, France
| | - J Szade
- A. Chelkowski Institute of Physics and Silesian Center for Education and Interdisciplinary Research,75 Pulku Piechoty 1A University of Silesia, 41-500, Chorzów, Poland.
| | - P Ruello
- Institut des Molécules et Matériaux du Mans, UMR CNRS 6283, Université du Maine, 72085 Le, Mans, France.
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40
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Ratchford DC, Dunkelberger AD, Vurgaftman I, Owrutsky JC, Pehrsson PE. Quantification of Efficient Plasmonic Hot-Electron Injection in Gold Nanoparticle-TiO 2 Films. NANO LETTERS 2017; 17:6047-6055. [PMID: 28850243 DOI: 10.1021/acs.nanolett.7b02366] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Excitation of localized surface plasmons in metal nanostructures generates hot electrons that can be transferred to an adjacent semiconductor, greatly enhancing the potential light-harvesting capabilities of photovoltaic and photocatalytic devices. Typically, the external quantum efficiency of these hot-electron devices is too low for practical applications (<1%), and the physics underlying this low yield remains unclear. Here, we use transient absorption spectroscopy to quantify the efficiency of the initial electron transfer in model systems composed of gold nanoparticles (NPs) fully embedded in TiO2 or Al2O3 films. In independent experiments, we measure free carrier absorption and electron-phonon decay in the model systems and determine that the electron-injection efficiency from the Au NPs to the TiO2 ranges from about 25% to 45%. While much higher than some previous estimates, the measured injection efficiency is within an upper-bound estimate based on a simple approximation for the Au hot-electron energy distribution. These results have important implications for understanding the achievable injection efficiencies of hot-electron plasmonic devices and show that the injection efficiency can be high for Au NPs fully embedded within a semiconductor with dimensions less than the Au electron mean free path.
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Affiliation(s)
- Daniel C Ratchford
- Chemistry Division and ‡Optical Sciences Division, U.S. Naval Research Laboratory , Washington, D.C. 20375, United States
| | - Adam D Dunkelberger
- Chemistry Division and ‡Optical Sciences Division, U.S. Naval Research Laboratory , Washington, D.C. 20375, United States
| | - Igor Vurgaftman
- Chemistry Division and ‡Optical Sciences Division, U.S. Naval Research Laboratory , Washington, D.C. 20375, United States
| | - Jeffrey C Owrutsky
- Chemistry Division and ‡Optical Sciences Division, U.S. Naval Research Laboratory , Washington, D.C. 20375, United States
| | - Pehr E Pehrsson
- Chemistry Division and ‡Optical Sciences Division, U.S. Naval Research Laboratory , Washington, D.C. 20375, United States
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41
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Ghalgaoui A, Ouvrard A, Wang J, Carrez S, Zheng W, Bourguignon B. Electron to Adsorbate Energy Transfer in Nanoparticles: Adsorption Site, Size, and Support Matter. J Phys Chem Lett 2017; 8:2666-2671. [PMID: 28558245 DOI: 10.1021/acs.jpclett.7b00698] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Confinement of hot electrons in metal nanoparticles (NPs) is expected to lead to increased reactivity in heterogeneous catalysis. NP size as well as support may influence molecule-NP coupling. Here, we use ultrafast nonlinear vibrational spectroscopy to follow energy transfer from hot electrons generated in Pd NP/MgO/Ag(100) to chemisorbed CO. Photoexcitation and photodesorption occur on an ultrashort time scale and are selective according to adsorption site. When the MgO layer is thick enough, it becomes NP size-dependent. Hot electron confinement within NPs is unfavorable for photodesorption, presumably because its dominant effect is to increase relaxation to phonons. An avenue of research is open where NP size and support thickness, photon energy, and molecular electronic structure will be tuned to obtain either molecular stability or reactivity in response to photon excitation.
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Affiliation(s)
- Ahmed Ghalgaoui
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay , F-91405 Orsay, France
| | - Aimeric Ouvrard
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay , F-91405 Orsay, France
| | - Jijin Wang
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay , F-91405 Orsay, France
| | - Serge Carrez
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay , F-91405 Orsay, France
| | - Wanquan Zheng
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay , F-91405 Orsay, France
| | - Bernard Bourguignon
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay , F-91405 Orsay, France
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42
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Su MN, Dongare PD, Chakraborty D, Zhang Y, Yi C, Wen F, Chang WS, Nordlander P, Sader JE, Halas NJ, Link S. Optomechanics of Single Aluminum Nanodisks. NANO LETTERS 2017; 17:2575-2583. [PMID: 28301725 DOI: 10.1021/acs.nanolett.7b00333] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Aluminum nanostructures support tunable surface plasmon resonances and have become an alternative to gold nanoparticles. Whereas gold is the most-studied plasmonic material, aluminum has the advantage of high earth abundance and hence low cost. In addition to understanding the size and shape tunability of the plasmon resonance, the fundamental relaxation processes in aluminum nanostructures after photoexcitation must be understood to take full advantage of applications such as photocatalysis and photodetection. In this work, we investigate the relaxation following ultrafast pulsed excitation and the launching of acoustic vibrations in individual aluminum nanodisks, using single-particle transient extinction spectroscopy. We find that the transient extinction signal can be assigned to a thermal relaxation of the photoexcited electrons and phonons. The ultrafast heating-induced launching of in-plane acoustic vibrations reveals moderate binding to the glass substrate and is affected by the native aluminum oxide layer. Finally, we compare the behavior of aluminum nanodisks to that of similarly prepared and sized gold nanodisks.
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Affiliation(s)
| | | | - Debadi Chakraborty
- School of Mathematics and Statistics, University of Melbourne , Melbourne, Victoria 3010, Australia
| | | | | | | | | | | | - John E Sader
- School of Mathematics and Statistics, University of Melbourne , Melbourne, Victoria 3010, Australia
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43
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Crut A, Maioli P, Vallée F, Del Fatti N. Linear and ultrafast nonlinear plasmonics of single nano-objects. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:123002. [PMID: 28094243 DOI: 10.1088/1361-648x/aa59cc] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Single-particle optical investigations have greatly improved our understanding of the fundamental properties of nano-objects, avoiding the spurious inhomogeneous effects that affect ensemble experiments. Correlation with high-resolution imaging techniques providing morphological information (e.g. electron microscopy) allows a quantitative interpretation of the optical measurements by means of analytical models and numerical simulations. In this topical review, we first briefly recall the principles underlying some of the most commonly used single-particle optical techniques: near-field, dark-field, spatial modulation and photothermal microscopies/spectroscopies. We then focus on the quantitative investigation of the surface plasmon resonance (SPR) of metallic nano-objects using linear and ultrafast optical techniques. While measured SPR positions and spectral areas are found in good agreement with predictions based on Maxwell's equations, SPR widths are strongly influenced by quantum confinement (or, from a classical standpoint, surface-induced electron scattering) and, for small nano-objects, cannot be reproduced using the dielectric functions of bulk materials. Linear measurements on single nano-objects (silver nanospheres and gold nanorods) allow a quantification of the size and geometry dependences of these effects in confined metals. Addressing the ultrafast response of an individual nano-object is also a powerful tool to elucidate the physical mechanisms at the origin of their optical nonlinearities, and their electronic, vibrational and thermal relaxation processes. Experimental investigations of the dynamical response of gold nanorods are shown to be quantitatively modeled in terms of modifications of the metal dielectric function enhanced by plasmonic effects. Ultrafast spectroscopy can also be exploited to unveil hidden physical properties of more complex nanosystems. In this context, two-color femtosecond pump-probe experiments performed on individual bimetallic heterodimers are discussed in the last part of the review, demonstrating the existence of Fano interferences in the optical absorption of a gold nanoparticle under the influence of a nearby silver one.
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Affiliation(s)
- Aurélien Crut
- FemtoNanoOptics group, Institut Lumière Matière UMR5306, Université Lyon 1, CNRS, Université de Lyon, 69622 Villeurbanne, France
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44
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Wang L, Sagaguchi T, Okuhata T, Tsuboi M, Tamai N. Electron and Phonon Dynamics in Hexagonal Pd Nanosheets and Ag/Pd/Ag Sandwich Nanoplates. ACS NANO 2017; 11:1180-1188. [PMID: 28036162 DOI: 10.1021/acsnano.6b07082] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Pd and its hybrid nanostructures have attracted considerable attention over the past decade, with both catalytic and plasmonic properties. The electron and phonon properties directly govern conversion efficiencies in applications such as energy collectors and photocatalysts. We report the dynamic processes of electron-phonon coupling and coherent acoustic phonon vibration in hexagonal Pd nanosheets and Ag/Pd/Ag sandwich nanoplates using transient absorption spectroscopy. The electron-phonon coupling constant of Pd nanosheets, GPd-nanosheet (8.7 × 1017 W/(m3·K)) is larger than that of the bulk GPd (5.0 × 1017 W/(m3·K)). The effective coupling constant Geff of Ag/Pd/Ag nanoplates decreases with increasing Ag shell thickness, finally approaching the bulk GAg. The variation of Geff is explained in terms of reduced density of states near Fermi level of Pd nanosheets with 1.8 nm ultrathin thickness. Coherent acoustic phonon vibration in Pd nanosheets is assigned to a fundamental breathing mode, similar to the vibration of benzene. The period increases with increasing Ag shell thickness. For Ag/Pd/Ag nanoplates with 20 nm thick Ag shells, the vibrational mode is ascribed to a quasi-extensional mode. The results show that the modes of the coherent acoustic phonon vibration transform with the geometric variation of Pd nanosheets and Ag/Pd/Ag nanoplates. Our results represent an understanding of quantum-confinement related electron dynamics and bulk-like phonon kinetics in the ultrathin Pd nanosheets and their hybrid nanostructures.
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Affiliation(s)
- Li Wang
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University , Sanda 669-1337, Japan
| | - Takuya Sagaguchi
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University , Sanda 669-1337, Japan
| | - Tomoki Okuhata
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University , Sanda 669-1337, Japan
| | - Motohiro Tsuboi
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University , Sanda 669-1337, Japan
| | - Naoto Tamai
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University , Sanda 669-1337, Japan
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45
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Carles R, Benzo P, Pécassou B, Bonafos C. Vibrational density of states and thermodynamics at the nanoscale: the 3D-2D transition in gold nanostructures. Sci Rep 2016; 6:39164. [PMID: 27982080 PMCID: PMC5159851 DOI: 10.1038/srep39164] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 11/17/2016] [Indexed: 11/10/2022] Open
Abstract
Surface enhanced Raman scattering (SERS) is generally and widely used to enhance the vibrational fingerprint of molecules located at the vicinity of noble metal nanoparticles. In this work, SERS is originally used to enhance the own vibrational density of states (VDOS) of nude and isolated gold nanoparticles. This offers the opportunity of analyzing finite size effects on the lattice dynamics which remains unattainable with conventional techniques based on neutron or x-ray inelastic scattering. By reducing the size down to few nanometers, the role of surface atoms versus volume atoms become dominant, and the “text-book” 3D-2D transition on the dynamical behavior is experimentally emphasized. “Anomalies” that have been predicted by a large panel of simulations at the atomic scale, are really observed, like the enhancement of the VDOS at low frequencies or the occurrence of localized modes at frequencies beyond the cut-off in bulk. Consequences on the thermodynamic properties at the nanoscale, like the reduction of the Debye temperature or the excess of the specific heat, have been evaluated. Finally the high sensitivity of reminiscent bulk-like phonons on the arrangements at the atomic scale is used to access the morphology and internal disorder of the nanoparticles.
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Affiliation(s)
- R Carles
- CEMES-CNRS Université de Toulouse, rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France
| | - P Benzo
- CEMES-CNRS Université de Toulouse, rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France
| | - B Pécassou
- CEMES-CNRS Université de Toulouse, rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France
| | - C Bonafos
- CEMES-CNRS Université de Toulouse, rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France
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46
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Lombardi A, Grzelczak MP, Pertreux E, Crut A, Maioli P, Pastoriza-Santos I, Liz-Marzán LM, Vallée F, Del Fatti N. Fano Interference in the Optical Absorption of an Individual Gold-Silver Nanodimer. NANO LETTERS 2016; 16:6311-6316. [PMID: 27648834 DOI: 10.1021/acs.nanolett.6b02680] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Fano resonances are central features in the responses of many systems including atoms, molecules, and nanomaterials. They arise as a consequence of interferences between two channels, most frequently associated with two system modes. In plasmonic materials, Fano interferences between optical modes have been shown, experimentally and theoretically, to induce narrow features in their scattering spectra. By investigating individual silver-gold heterodimers, we first experimentally demonstrate that Fano interference is also a key effect in the optical absorption of plasmonic nano-objects, in agreement with theoretical predictions. Conversely to previously investigated systems, the two interacting modes at the origin of absorptive Fano effect are mostly localized on either one or the other dimer component. Experimental results were obtained by selectively monitoring the optical absorption of one dimer component using a two-color nonlinear time-resolved technique. This also opens the way to full optical far-field noncontact investigations of charge or energy exchanges between nano-objects with a spatial resolution much smaller than the optical wavelength.
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Affiliation(s)
- Anna Lombardi
- FemtoNanoOptics group, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière , F-69622 Villeurbanne, France
| | - Marcin P Grzelczak
- Departamento de Química Física, Universidade de Vigo , 36310 Vigo, Spain
| | - Etienne Pertreux
- FemtoNanoOptics group, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière , F-69622 Villeurbanne, France
| | - Aurélien Crut
- FemtoNanoOptics group, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière , F-69622 Villeurbanne, France
| | - Paolo Maioli
- FemtoNanoOptics group, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière , F-69622 Villeurbanne, France
| | | | - Luis M Liz-Marzán
- Departamento de Química Física, Universidade de Vigo , 36310 Vigo, Spain
- Bionanoplasmonics Laboratory, CIC biomaGUNE , 20009 Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science , 48013 Bilbao, Spain
| | - Fabrice Vallée
- FemtoNanoOptics group, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière , F-69622 Villeurbanne, France
| | - Natalia Del Fatti
- FemtoNanoOptics group, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière , F-69622 Villeurbanne, France
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47
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48
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Nurlaela E, Wang H, Shinagawa T, Flanagan S, Ould-Chikh S, Qureshi M, Mics Z, Sautet P, Le Bahers T, Cánovas E, Bonn M, Takanabe K. Enhanced Kinetics of Hole Transfer and Electrocatalysis during Photocatalytic Oxygen Evolution by Cocatalyst Tuning. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00508] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ela Nurlaela
- Division
of Physical Sciences and Engineering, KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), 4700 KAUST, Thuwal 23955-6900, Saudi Arabia
| | - Hai Wang
- Department
of Molecular Spectroscopy, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Graduate
School of Material Science in Mainz, University of Mainz, Staudingerweg
9, 55128 Mainz, Germany
| | - Tatsuya Shinagawa
- Division
of Physical Sciences and Engineering, KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), 4700 KAUST, Thuwal 23955-6900, Saudi Arabia
| | - Sean Flanagan
- Division
of Physical Sciences and Engineering, KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), 4700 KAUST, Thuwal 23955-6900, Saudi Arabia
| | - Samy Ould-Chikh
- Division
of Physical Sciences and Engineering, KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), 4700 KAUST, Thuwal 23955-6900, Saudi Arabia
| | - Muhammad Qureshi
- Division
of Physical Sciences and Engineering, KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), 4700 KAUST, Thuwal 23955-6900, Saudi Arabia
| | - Zoltán Mics
- Department
of Molecular Spectroscopy, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Philippe Sautet
- Université de Lyon, Université Claude Bernard Lyon 1, ENS Lyon, Centre Nationale de Recherche Scientifique, 46 allée d’Italie, 69007 Lyon Cedex 07, France
| | - Tangui Le Bahers
- Université de Lyon, Université Claude Bernard Lyon 1, ENS Lyon, Centre Nationale de Recherche Scientifique, 46 allée d’Italie, 69007 Lyon Cedex 07, France
| | - Enrique Cánovas
- Department
of Molecular Spectroscopy, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Mischa Bonn
- Department
of Molecular Spectroscopy, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Kazuhiro Takanabe
- Division
of Physical Sciences and Engineering, KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), 4700 KAUST, Thuwal 23955-6900, Saudi Arabia
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49
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Karam TE, Khoury RA, Haber LH. Excited-state dynamics of size-dependent colloidal TiO2-Au nanocomposites. J Chem Phys 2016; 144:124704. [DOI: 10.1063/1.4944385] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Tony E. Karam
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Rami A. Khoury
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Louis H. Haber
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
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50
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Hartland GV. Nanoparticles at SEA: Seeding, Etching, and Applications. J Phys Chem Lett 2016; 7:728-729. [PMID: 26888344 DOI: 10.1021/acs.jpclett.6b00048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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