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Wang Z, Mun TJ, Machado FM, Moon JH, Fang S, Aliev AE, Zhang M, Cai W, Mu J, Hyeon JS, Park JW, Conlin P, Cho K, Gao E, Wan G, Huynh C, Zakhidov AA, Kim SJ, Baughman RH. More Powerful Twistron Carbon Nanotube Yarn Mechanical Energy Harvesters. Adv Mater 2022; 34:e2201826. [PMID: 35475584 DOI: 10.1002/adma.202201826] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/12/2022] [Indexed: 06/14/2023]
Abstract
Stretching a coiled carbon nanotube (CNT) yarn can provide large, reversible electrochemical capacitance changes, which convert mechanical energy to electricity. Here, it is shown that the performance of these "twistron" harvesters can be increased by optimizing the alignment of precursor CNT forests, plastically stretching the precursor twisted yarn, applying much higher tensile loads during precoiling twist than for coiling, using electrothermal pulse annealing under tension, and incorporating reduced graphene oxide nanoplates. The peak output power for a 1 and a 30 Hz sinusoidal deformation are 0.73 and 3.19 kW kg-1 , respectively, which are 24- and 13-fold that of previous twistron harvesters at these respective frequencies. This performance at 30 Hz is over 12-fold that of other prior-art mechanical energy harvesters for frequencies between 0.1 and 600 Hz. The maximum energy conversion efficiency is 7.2-fold that for previous twistrons. Twistron anode and cathode yarn arrays are stretched 180° out-of-phase by locating them in the negative and positive compressibility directions of hinged wine-rack frames, thereby doubling the output voltage and reducing the input mechanical energy.
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Affiliation(s)
- Zhong Wang
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Tae Jin Mun
- Center for Self-Powered Actuation, Department of Biomedical Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Fernando M Machado
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75080, USA
- Technology Development Center, Federal University of Pelotas, Pelotas, RS, 96010-610, Brazil
| | - Ji Hwan Moon
- Center for Self-Powered Actuation, Department of Biomedical Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Shaoli Fang
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Ali E Aliev
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Mengmeng Zhang
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Wenting Cai
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75080, USA
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Jiuke Mu
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Jae Sang Hyeon
- Center for Self-Powered Actuation, Department of Biomedical Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Jong Woo Park
- Center for Self-Powered Actuation, Department of Biomedical Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Patrick Conlin
- Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Kyeongjae Cho
- Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Enlai Gao
- Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, Hubei, 430072, China
| | - Gang Wan
- Department of Mechanical Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Chi Huynh
- Nano-Science and Technology Center, Lintec of America, Richardson, TX, 75081, USA
| | - Anvar A Zakhidov
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Seon Jeong Kim
- Center for Self-Powered Actuation, Department of Biomedical Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Ray H Baughman
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75080, USA
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Saranin DS, Mahmoodpoor A, Voroshilov PM, Simovski CR, Zakhidov AA. Ionically Gated Small-Molecule OPV: Interfacial Doping of Charge Collector and Transport Layer. ACS Appl Mater Interfaces 2021; 13:8606-8619. [PMID: 33588526 DOI: 10.1021/acsami.0c17865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We demonstrate an improvement in the performance of organic photovoltaic (OPV) systems based on small molecules by ionic gating via controlled reversible n-doping of multi-wall carbon nanotubes (MWCNTs) coated on fullerene electron transport layers (ETLs): C60 and C70. Such electric double-layer charging (EDLC) doping, achieved by ionic liquid (IL) charging, allows tuning of the electronic concentration in MWCNTs and the fullerene planar acceptor layers, increasing it by orders of magnitude. This leads to the decrease of the series and increase of the shunt resistances of OPVs and allows use of thick (up to 200 nm) ETLs, increasing the durability of OPVs. Two stages of OPV enhancement are described upon the increase of gating bias Vg: at small (or even zero) Vg, the extended interface of ILs and porous transparent MWCNTs is charged by gating, and the fullerene charge collector is significantly improved, becoming an ohmic contact. This changes the S-shaped J-V curve via improving the electron collection by an n-doped MWCNT cathode with an ohmic interfacial contact. The J-V curves further improve at higher gating bias Vg due to the increase of the Fermi level and decrease of the MWCNT work function. At the next qualitative stage, the acceptor fullerene layer becomes n-doped by electron injection from MWCNTs while ions of ILs penetrate into the fullerene. At this step, the internal built-in field is created within OPV, which helps in exciton dissociation and charge separation/transport, increasing further the Jsc and the fill factor. The ionic gating concept demonstrated here for most simple classical planar small-molecule OPV cells can be potentially applied to more complex highly efficient hybrid devices, such as perovskite photovoltaic with an ETL or a hole transport layer, providing a new way to tune their properties via controllable and reversible interfacial doping of charge collectors and transport layers.
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Affiliation(s)
- Danila S Saranin
- National University of Science and Technology MISiS, Moscow 119049, Russia
| | | | | | - Constantin R Simovski
- ITMO University, Kronverkskiy pr. 49, St. Petersburg 197101, Russia
- School of Electrical Engineering, Department of Electronics and Nanoengineering, Aalto University, P.O. Box 15500, Aalto 00076, Finland
| | - Anvar A Zakhidov
- ITMO University, Kronverkskiy pr. 49, St. Petersburg 197101, Russia
- Physics Department and The NanoTech Institute, The University of Texas at Dallas, Richardson 75080, United States
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3
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Liashenko TG, Pushkarev AP, Naujokaitis A, Pakštas V, Franckevičius M, Zakhidov AA, Makarov SV. Suppression of Electric Field-Induced Segregation in Sky-Blue Perovskite Light-Emitting Electrochemical Cells. Nanomaterials (Basel) 2020; 10:nano10101937. [PMID: 33003320 PMCID: PMC7600448 DOI: 10.3390/nano10101937] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 09/24/2020] [Accepted: 09/27/2020] [Indexed: 11/21/2022]
Abstract
Inexpensive perovskite light-emitting devices fabricated by a simple wet chemical approach have recently demonstrated very prospective characteristics such as narrowband emission, low turn-on bias, high brightness, and high external quantum efficiency of electroluminescence, and have presented a good alternative to well-established technology of epitaxially grown III-V semiconducting alloys. Engineering of highly efficient perovskite light-emitting devices emitting green, red, and near-infrared light has been demonstrated in numerous reports and has faced no major fundamental limitations. On the contrary, the devices emitting blue light, in particular, based on 3D mixed-halide perovskites, suffer from electric field-induced phase separation (segregation). This crystal lattice defect-mediated phenomenon results in an undesirable color change of electroluminescence. Here we report a novel approach towards the suppression of the segregation in single-layer perovskite light-emitting electrochemical cells. Co-crystallization of direct band gap CsPb(Cl,Br)3 and indirect band gap Cs4Pb(Cl,Br)6 phases in the presence of poly(ethylene oxide) during a thin film deposition affords passivation of surface defect states and an increase in the density of photoexcited charge carriers in CsPb(Cl,Br)3 grains. Furthermore, the hexahalide phase prevents the dissociation of the emissive grains in the strong electric field during the device operation. Entirely resistant to 5.7 × 106 V·m−1 electric field-driven segregation light-emitting electrochemical cell exhibits stable emission at wavelength 479 nm with maximum external quantum efficiency 0.7%, maximum brightness 47 cd·m−2, and turn-on bias of 2.5 V.
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Affiliation(s)
- Tatiana G. Liashenko
- Department of Physics and Engineering, ITMO University, 197101 St. Petersburg, Russia; (A.A.Z.); (S.V.M.)
- Correspondence: (T.G.L.); (A.P.P.)
| | - Anatoly P. Pushkarev
- Department of Physics and Engineering, ITMO University, 197101 St. Petersburg, Russia; (A.A.Z.); (S.V.M.)
- Correspondence: (T.G.L.); (A.P.P.)
| | - Arnas Naujokaitis
- Center for Physical Sciences and Technology, LT-10257 Vilnius, Lithuania; (A.N.); (V.P.); (M.F.)
| | - Vidas Pakštas
- Center for Physical Sciences and Technology, LT-10257 Vilnius, Lithuania; (A.N.); (V.P.); (M.F.)
| | - Marius Franckevičius
- Center for Physical Sciences and Technology, LT-10257 Vilnius, Lithuania; (A.N.); (V.P.); (M.F.)
| | - Anvar A. Zakhidov
- Department of Physics and Engineering, ITMO University, 197101 St. Petersburg, Russia; (A.A.Z.); (S.V.M.)
- University of Texas at Dallas, Richardson, TX 75080, USA
| | - Sergey V. Makarov
- Department of Physics and Engineering, ITMO University, 197101 St. Petersburg, Russia; (A.A.Z.); (S.V.M.)
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4
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Tiguntseva E, Koshelev K, Furasova A, Tonkaev P, Mikhailovskii V, Ushakova EV, Baranov DG, Shegai T, Zakhidov AA, Kivshar Y, Makarov SV. Room-Temperature Lasing from Mie-Resonant Nonplasmonic Nanoparticles. ACS Nano 2020; 14:8149-8156. [PMID: 32484650 DOI: 10.1021/acsnano.0c01468] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Subwavelength particles supporting Mie resonances underpin a strategy in nanophotonics for efficient control and manipulation of light by employing both an electric and a magnetic optically induced multipolar resonant response. Here, we demonstrate that monolithic dielectric nanoparticles made of CsPbBr3 halide perovskites can exhibit both efficient Mie-resonant lasing and structural coloring in the visible and near-IR frequency ranges. We employ a simple chemical synthesis with nearly epitaxial quality for fabricating subwavelength cubes with high optical gain and demonstrate single-mode lasing governed by the Mie resonances from nanocubes as small as 310 nm by the side length. These active nanoantennas represent the most compact room-temperature nonplasmonic nanolasers demonstrated until now.
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Affiliation(s)
- Ekaterina Tiguntseva
- Department of Physics and Engineering, ITMO University, Saint Petersburg 197101, Russia
| | - Kirill Koshelev
- Department of Physics and Engineering, ITMO University, Saint Petersburg 197101, Russia
- Nonlinear Physics Center, Australian National University, Canberra, ACT 2601, Australia
| | - Aleksandra Furasova
- Department of Physics and Engineering, ITMO University, Saint Petersburg 197101, Russia
| | - Pavel Tonkaev
- Department of Physics and Engineering, ITMO University, Saint Petersburg 197101, Russia
| | | | - Elena V Ushakova
- Center of Information Optical Technologies, ITMO University, Saint Petersburg 197101, Russia
- Department of Materials Science and Engineering and Center for Functional Photonics (CFP), City University of Hong Kong, Hong Kong S.A.R
| | - Denis G Baranov
- Department of Physics, Chalmers University of Technology, 412 96 Gothenburg, Sweden
| | - Timur Shegai
- Department of Physics, Chalmers University of Technology, 412 96 Gothenburg, Sweden
| | - Anvar A Zakhidov
- Department of Physics and Engineering, ITMO University, Saint Petersburg 197101, Russia
- University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Yuri Kivshar
- Department of Physics and Engineering, ITMO University, Saint Petersburg 197101, Russia
- Nonlinear Physics Center, Australian National University, Canberra, ACT 2601, Australia
| | - Sergey V Makarov
- Department of Physics and Engineering, ITMO University, Saint Petersburg 197101, Russia
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5
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Martinez PM, Ishteev A, Fahimi A, Velten J, Jurewicz I, Dalton AB, Collins S, Baughman RH, Zakhidov AA. Silver Nanowires on Carbon Nanotube Aerogel Sheets for Flexible, Transparent Electrodes. ACS Appl Mater Interfaces 2019; 11:32235-32243. [PMID: 31411850 DOI: 10.1021/acsami.9b06368] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Flexible, free-standing transparent conducting electrodes (TCEs) with simultaneously tunable transmittances up to 98% and sheet resistances down to 11 Ω/sq were prepared by a facile spray-coating method of silver nanowires (AgNWs) onto dry-spun multiwall carbon nanotube (MWNT) aerogels. Counterintuitively, the transmittance of the hybrid electrodes can be increased as the mass density of AgNWs within the MWNT aerogels increases; however, the final achievable transmittance depends on the initial transparency of the MWNT aerogels. Simultaneously, a strong decrease in sheet resistance is obtained when AgNWs form a percolated network along the MWNT aerogel. Additionally, anisotropic reduction in sheet resistance and polarized transmittance of AgNW/MWNT aerogels is achieved with this method. The final AgNW/MWNT hybrid TCEs transmittance and sheet resistance can be fine-tuned by spray-coating mechanisms or by choosing initial MWNT aerogel density. Thus, a wide range of AgNW/MWNT hybrid TCEs with optimized optoelectronic properties can be achieved depending of the requirements needed. Finally, the free-standing AgNW/MWNT hybrid TCEs can be laminated onto a wide range of substrates without the need of a bonding aid.
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Affiliation(s)
- Patricia M Martinez
- University of Texas at Dallas , NanoTech Institute , Richardson , Texas 75080 , United States
- University of Texas at Dallas , Department of Chemistry , Richardson , Texas 75080 , United States
| | - Arthur Ishteev
- National University of Science and Technology , MISiS , Leninskiy prospect , Moscow , 119049 , Russia
- ITMO University , 49 Kronverksky Pr. St . Petersburg , 197101 , Russia
| | - Azin Fahimi
- University of Surrey , Guildford , Surrey GU2 7XH , United Kingdom
| | - Josef Velten
- University of Texas at Dallas , NanoTech Institute , Richardson , Texas 75080 , United States
| | - Izabela Jurewicz
- University of Surrey , Guildford , Surrey GU2 7XH , United Kingdom
| | - Alan B Dalton
- University of Sussex , Falmer , Brighton BN1 9RH , United Kingdom
| | - Steve Collins
- University of Texas at Dallas , NanoTech Institute , Richardson , Texas 75080 , United States
- University of Texas at Dallas , Department of Chemistry , Richardson , Texas 75080 , United States
| | - Ray H Baughman
- University of Texas at Dallas , NanoTech Institute , Richardson , Texas 75080 , United States
- University of Texas at Dallas , Department of Chemistry , Richardson , Texas 75080 , United States
| | - Anvar A Zakhidov
- University of Texas at Dallas , NanoTech Institute , Richardson , Texas 75080 , United States
- National University of Science and Technology , MISiS , Leninskiy prospect , Moscow , 119049 , Russia
- ITMO University , 49 Kronverksky Pr. St . Petersburg , 197101 , Russia
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6
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Zhizhchenko A, Syubaev S, Berestennikov A, Yulin AV, Porfirev A, Pushkarev A, Shishkin I, Golokhvast K, Bogdanov AA, Zakhidov AA, Kuchmizhak AA, Kivshar YS, Makarov SV. Single-Mode Lasing from Imprinted Halide-Perovskite Microdisks. ACS Nano 2019; 13:4140-4147. [PMID: 30844247 DOI: 10.1021/acsnano.8b08948] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Halide-perovskite microlasers have demonstrated fascinating performance owing to their low-threshold lasing at room temperature and low-cost fabrication. However, being synthesized chemically, controllable fabrication of such microlasers remains challenging, and it requires template-assisted growth or complicated nanolithography. Here, we suggest and implement an approach for the fabrication of microlasers by direct laser ablation of a thin film on glass with donut-shaped femtosecond laser beams. The fabricated microlasers represent MAPbBr xI y microdisks with 760 nm thickness and diameters ranging from 2 to 9 μm that are controlled by a topological charge of the vortex beam. As a result, this method allows one to fabricate single-mode perovskite microlasers operating at room temperature in a broad spectral range (550-800 nm) with Q-factors up to 5500. High-speed fabrication and reproducibility of microdisk parameters, as well as a precise control of their location on a surface, make it possible to fabricate centimeter-sized arrays of such microlasers. Our finding is important for direct writing of fully integrated coherent light sources for advanced photonic and optoelectronic circuitry.
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Affiliation(s)
- Alexey Zhizhchenko
- Far Eastern Federal University , Vladivostok 690091 , Russia
- Institute of Automation and Control Processes (IACP) , Far Eastern Branch of the Russian Academy of Science , Vladivostok 690091 , Russia
| | - Sergey Syubaev
- Far Eastern Federal University , Vladivostok 690091 , Russia
- Institute of Automation and Control Processes (IACP) , Far Eastern Branch of the Russian Academy of Science , Vladivostok 690091 , Russia
| | | | | | - Alexey Porfirev
- Samara National Research University , Samara 443086 , Russia
- Image Processing Systems Institute of the RAS-Branch of FSRC "Crystallography & Photonics" of the Russian Academy of Science , Samara 443001 , Russia
| | | | | | | | | | - Anvar A Zakhidov
- ITMO University , St. Petersburg 197101 , Russia
- University of Texas at Dallas , Richardson , Texas 75080 , United States
| | - Aleksandr A Kuchmizhak
- Far Eastern Federal University , Vladivostok 690091 , Russia
- Institute of Automation and Control Processes (IACP) , Far Eastern Branch of the Russian Academy of Science , Vladivostok 690091 , Russia
| | - Yuri S Kivshar
- ITMO University , St. Petersburg 197101 , Russia
- Nonlinear Physics Centre , Australian National University , Canberra , ACT 2601 , Australia
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7
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Berestennikov AS, Li Y, Iorsh IV, Zakhidov AA, Rogach AL, Makarov SV. Beyond quantum confinement: excitonic nonlocality in halide perovskite nanoparticles with Mie resonances. Nanoscale 2019; 11:6747-6754. [PMID: 30907397 DOI: 10.1039/c8nr09837a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Halide perovskite nanoparticles have demonstrated pronounced quantum confinement properties for nanometer-scale sizes and strong Mie resonances for 102 nm sizes. Here we studied the intermediate sizes where the nonlocal response of the exciton affects the spectral properties of Mie modes. The mechanism of this effect is associated with the fact that excitons in nanoparticles have an additional kinetic energy that is proportional to k2, where k is the wavenumber. Therefore, they possess higher energy than in the case of static excitons. The obtained experimental and theoretical results for MAPbBr3 nanoparticles of various sizes (2-200 nm) show that for particle radii comparable with the Bohr radius of the exciton (a few nanometers in perovskites), the blue-shift of the photoluminescence, scattering, and absorption cross-section peaks related to quantum confinement should be dominating due to the weakness of Mie resonances for such small sizes. On the other hand, for larger sizes (more than 50-100 nm), the influence of Mie modes increases, and the blue shift remains despite the fact that the effect of quantum confinement becomes much weaker.
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Affiliation(s)
- A S Berestennikov
- Department of Nanophotonics and Metamatarials, ITMO University, 49 Kronverkskii pr., Saint Petersburg 197101, Russia.
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8
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Pushkarev AP, Korolev VI, Markina DI, Komissarenko FE, Naujokaitis A, Drabavičius A, Pakštas V, Franckevičius M, Khubezhov SA, Sannikov DA, Zasedatelev AV, Lagoudakis PG, Zakhidov AA, Makarov SV. A Few-Minute Synthesis of CsPbBr 3 Nanolasers with a High Quality Factor by Spraying at Ambient Conditions. ACS Appl Mater Interfaces 2019; 11:1040-1048. [PMID: 30540432 DOI: 10.1021/acsami.8b17396] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Inorganic cesium lead halide perovskite nanowires, generating laser emission in the broad spectral range at room temperature and low threshold, have become powerful tools for the cutting-edge applications in the optoelectronics and nanophotonics. However, to achieve high-quality nanowires with the outstanding optical properties, it was necessary to employ long-lasting and costly methods of their synthesis, as well as postsynthetic separation and transfer procedures that are not convenient for large-scale production. Here we report a novel approach to fabricate high-quality CsPbBr3 nanolasers obtained by rapid precipitation from dimethyl sulfoxide solution sprayed onto hydrophobic substrates at ambient conditions. The synthesis technique allows producing the well-separated nanowires with a broad size distribution of 2-50 μm in 5-7 min, being the fastest method to the best of our knowledge. The formation of nanowires occurs via ligand-assisted reprecipitation triggered by intermolecular proton transfer from (CH3)2CHOH to H2O in the presence of a minor amount of water. The XRD patterns confirm an orthorhombic crystal structure of the as-grown CsPbBr3 single nanowires. Scanning electron microscopy images reveal their regular shape and truncated pyramidal end facets, while high-resolution transmission electron microscopy ones demonstrate their single-crystal structure. The lifetime of excitonic emission of the nanowires is found to be 7 ns, when the samples are excited with energy below the lasing threshold, manifesting the low concentration of defect states. The measured nanolasers of different lengths exhibit pronounced stimulated emission above 13 μJ cm-2 excitation threshold with quality factor Q = 1017-6166. Their high performance is assumed to be related to their monocrystalline structure, low concentration of defect states, and improved end facet reflectivity.
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Affiliation(s)
- Anatoly P Pushkarev
- Department of Nanophotonics and Metamaterials , ITMO University , 197101 St. Petersburg , Russia
| | - Viacheslav I Korolev
- Department of Nanophotonics and Metamaterials , ITMO University , 197101 St. Petersburg , Russia
| | - Daria I Markina
- Department of Nanophotonics and Metamaterials , ITMO University , 197101 St. Petersburg , Russia
| | - Filipp E Komissarenko
- Department of Nanophotonics and Metamaterials , ITMO University , 197101 St. Petersburg , Russia
| | - Arnas Naujokaitis
- Center for Physical Sciences and Technology , LT-10257 Vilnius , Lithuania
| | | | - Vidas Pakštas
- Center for Physical Sciences and Technology , LT-10257 Vilnius , Lithuania
| | | | - Soslan A Khubezhov
- Department of Physics , North Ossetian State University , 362025 Vladikavkaz , Russia
| | - Denis A Sannikov
- Skolkovo Institute of Science and Technology , 143026 Moscow , Russia
- P.N. Lebedev Physical Institute of RAS , 119991 Moscow , Russia
| | | | - Pavlos G Lagoudakis
- Skolkovo Institute of Science and Technology , 143026 Moscow , Russia
- University of Southampton , Southampton SO17 1BJ , United Kingdom
| | - Anvar A Zakhidov
- Department of Nanophotonics and Metamaterials , ITMO University , 197101 St. Petersburg , Russia
- University of Texas at Dallas , Richardson, Texas 75080 , United States
| | - Sergey V Makarov
- Department of Nanophotonics and Metamaterials , ITMO University , 197101 St. Petersburg , Russia
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9
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Liashenko TG, Cherotchenko ED, Pushkarev AP, Pakštas V, Naujokaitis A, Khubezhov SA, Polozkov RG, Agapev KB, Zakhidov AA, Shelykh IA, Makarov SV. Electronic structure of CsPbBr3−xClx perovskites: synthesis, experimental characterization, and DFT simulations. Phys Chem Chem Phys 2019; 21:18930-18938. [PMID: 31453594 DOI: 10.1039/c9cp03656c] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Cesium lead mixed-halide perovskite thin films were fabricated by using a chemical vapor anion exchange procedure. Optical and structural properties of the materials obtained were studied comprehensively.
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Affiliation(s)
| | | | | | - Vidas Pakštas
- Center for Physical Sciences and Technology
- LT-10257 Vilnius
- Lithuania
| | - Arnas Naujokaitis
- Center for Physical Sciences and Technology
- LT-10257 Vilnius
- Lithuania
| | - Soslan A. Khubezhov
- Department of Physics
- North Ossetian State University
- 362025 Vladikavkaz
- Russia
| | - Roman G. Polozkov
- Faculty of Physics and Engineering
- ITMO University
- 197101 St. Petersburg
- Russia
| | - Kirill B. Agapev
- Faculty of Physics and Engineering
- ITMO University
- 197101 St. Petersburg
- Russia
| | - Anvar A. Zakhidov
- Faculty of Physics and Engineering
- ITMO University
- 197101 St. Petersburg
- Russia
- University of Texas at Dallas
| | - Ivan A. Shelykh
- Faculty of Physics and Engineering
- ITMO University
- 197101 St. Petersburg
- Russia
- Science Institute
| | - Sergey V. Makarov
- Faculty of Physics and Engineering
- ITMO University
- 197101 St. Petersburg
- Russia
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10
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Tiguntseva EY, Baranov DG, Pushkarev AP, Munkhbat B, Komissarenko F, Franckevičius M, Zakhidov AA, Shegai T, Kivshar YS, Makarov SV. Tunable Hybrid Fano Resonances in Halide Perovskite Nanoparticles. Nano Lett 2018; 18:5522-5529. [PMID: 30071168 DOI: 10.1021/acs.nanolett.8b01912] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Halide perovskites are known to support excitons at room temperatures with high quantum yield of luminescence that make them attractive for all-dielectric resonant nanophotonics and meta-optics. Here we report the observation of broadly tunable Fano resonances in halide perovskite nanoparticles originating from the coupling of excitons to the Mie resonances excited in the nanoparticles. Signatures of the photon-exciton (" hybrid") Fano resonances are observed in dark-field spectra of isolated nanoparticles, and also in the extinction spectra of aperiodic lattices of such nanoparticles. In the latter case, chemical tunability of the exciton resonance allows reversible tuning of the Fano resonance across the 100 nm bandwidth in the visible frequency range, providing a novel approach to control optical properties of perovskite nanostructures. The proposed method of chemical tuning paves the way to an efficient control of emission properties of on-chip-integrated light-emitting nanoantennas.
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Affiliation(s)
| | - Denis G Baranov
- ITMO University , Saint Petersburg 197101 , Russia
- Department of Physics , Chalmers University of Technology , 412 96 Gothenburg , Sweden
| | | | - Battulga Munkhbat
- Department of Physics , Chalmers University of Technology , 412 96 Gothenburg , Sweden
| | | | | | - Anvar A Zakhidov
- ITMO University , Saint Petersburg 197101 , Russia
- University of Texas at Dallas , Richardson , Texas 75080 , United States
| | - Timur Shegai
- Department of Physics , Chalmers University of Technology , 412 96 Gothenburg , Sweden
| | - Yuri S Kivshar
- ITMO University , Saint Petersburg 197101 , Russia
- Nonlinear Physics Centre , Australian National University , Canberra , ACT 2601 , Australia
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11
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Tiguntseva EY, Zograf GP, Komissarenko FE, Zuev DA, Zakhidov AA, Makarov SV, Kivshar YS. Light-Emitting Halide Perovskite Nanoantennas. Nano Lett 2018; 18:1185-1190. [PMID: 29365259 DOI: 10.1021/acs.nanolett.7b04727] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nanoantennas made of high-index dielectrics with low losses in visible and infrared frequency ranges have emerged as a novel platform for advanced nanophotonic devices. On the other hand, halide perovskites are known to possess high refractive index, and they support excitons at room temperature with high binding energies and quantum yield of luminescence that makes them very attractive for all-dielectric resonant nanophotonics. Here we employ halide perovskites to create light-emitting nanoantennas with enhanced photoluminescence due to the coupling of their excitons to dipolar and multipolar Mie resonances. We demonstrate that the halide perovskite nanoantennas can emit light in the range of 530-770 nm depending on their composition. We employ a simple technique based on laser ablation of thin films prepared by wet-chemistry methods as a novel cost-effective approach for the fabrication of resonant perovskite nanostructures.
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Affiliation(s)
- E Y Tiguntseva
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg, 197101, Russia
| | - G P Zograf
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg, 197101, Russia
| | - F E Komissarenko
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg, 197101, Russia
| | - D A Zuev
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg, 197101, Russia
| | - A A Zakhidov
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg, 197101, Russia
- University of Texas at Dallas , Richardson, Texas 75080, United States
| | - S V Makarov
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg, 197101, Russia
| | - Yuri S Kivshar
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg, 197101, Russia
- Nonlinear Physics Centre, Australian National University , Canberra, Austrailian Capital Territory 2601, Australia
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12
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Tiguntseva EY, Saraeva IN, Kudryashov SI, Ushakova EV, Komissarenko FE, Ishteev AR, Tsypkin AN, Haroldson R, Milichko VA, Zuev DA, Makarov SV, Zakhidov AA. Laser post-processing of halide perovskites for enhanced photoluminescence and absorbance. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1742-6596/917/6/062002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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13
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Xu X, Hu D, Yan L, Fang S, Shen C, Loo YL, Lin Y, Haines CS, Li N, Zakhidov AA, Meng H, Baughman RH, Huang W. Polar-Electrode-Bridged Electroluminescent Displays: 2D Sensors Remotely Communicating Optically. Adv Mater 2017; 29. [PMID: 28898465 DOI: 10.1002/adma.201703552] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 08/09/2017] [Indexed: 05/14/2023]
Abstract
A novel geometry for electroluminescent devices, which does not require transparent electrodes for electrical input, is demonstrated, theoretically analyzed, and experimentally characterized. Instead of emitting light through a conventional electrode, light emission occurs through a polar liquid or solid and input electrical electrodes are coplanar, rather than stacked in a sandwich configuration. This new device concept is scalable and easily deployed for a range of modular alternating-current-powered electroluminescent light sources and light-emitting sensing devices. The polar-electrode-bridged electroluminescent displays can be used as remotely readable, spatially responsive sensors that emit light in response to the accumulation and distribution of materials on the device surface. Using this device structure, various types of alternating current devices are demonstrated. These include an umbrella that automatically lights up when it rains, a display that emits light from regions touched by human fingers (or painted upon using a mixture of oil and water), and a sensor that lights up differently in different areas to indicate the presence of water and its freezing. This study extends the dual-stack, coplanar-electrode device geometry to provide displays that emit light from a figure drawn on an electroluminescent panel using a graphite pencil.
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Affiliation(s)
- Xiuru Xu
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Dan Hu
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Lijia Yan
- Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, China
| | - Shaoli Fang
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083, USA
| | - Clifton Shen
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Yueh-Lin Loo
- Department of Chemical and Biological Engineering and the Andlinger Center for Energy and the Environment, Princeton University, Princeton, NJ, 08544, USA
| | - Yuan Lin
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Carter S Haines
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083, USA
| | - Na Li
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083, USA
| | - Anvar A Zakhidov
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083, USA
| | - Hong Meng
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Ray H Baughman
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083, USA
| | - Wei Huang
- Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, China
- Shaanxi Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an, 710072, China
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14
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Martinez PM, Pozdin VA, Papadimitratos A, Holmes W, Hassanipour F, Dover G, Zakhidov AA. Carbon Nanotube Dry Spinnable Sheets for Solar Selective Coatings by Lamination. Eurasian Chem Tech J 2016. [DOI: 10.18321/ectj479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Carbon nanotube, oriented free standing sheets can be laminated on any surface as selective solar absorbers while simultaneously dry spun in a highly controlled process from vertically oriented forests grown by CVD. We have found that properties of a CNT forest strongly correlate with the optical transparency and reflectivity of CNT sheets required for solar selective coatings and can be properly tuned for optimal coatings for solar collectors. We study absorptive and emissive properties of CNT sheets that are laminated by a simple automated and controlled process, developed for coating of cylindrical glass tubes for evacuated solar collectors (ETC). The advantages of Joule heating of CNT coatings are demonstrated and test results described, showing a unique property of fast heating as compared to slow heating in conventional solar water heaters.
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15
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Lee JA, Aliev AE, Bykova JS, de Andrade MJ, Kim D, Sim HJ, Lepró X, Zakhidov AA, Lee JB, Spinks GM, Roth S, Kim SJ, Baughman RH. Woven-Yarn Thermoelectric Textiles. Adv Mater 2016; 28:5038-44. [PMID: 27110905 DOI: 10.1002/adma.201600709] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 03/03/2016] [Indexed: 05/11/2023]
Abstract
The fabrication and characterization of highly flexible textiles are reported. These textiles can harvest thermal energy from temperature gradients in the desirable through-thickness direction. The tiger yarns containing n- and p-type segments are woven to provide textiles containing n-p junctions. A high power output of up to 8.6 W m(-2) is obtained for a temperature difference of 200 °C.
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Affiliation(s)
- Jae Ah Lee
- The Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, TX, 75080, USA
- Center for Self-powered Actuation and Department of Biomedical Engineering, Hanyang University, Seoul, 133-791, South Korea
| | - Ali E Aliev
- The Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Julia S Bykova
- The Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, TX, 75080, USA
- Nano-Science and Technology Center, Lintec of America, Richardson, TX, 75080, USA
| | - Mônica Jung de Andrade
- The Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Daeyoung Kim
- Department of Electrical Engineering, The University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Hyeon Jun Sim
- Center for Self-powered Actuation and Department of Biomedical Engineering, Hanyang University, Seoul, 133-791, South Korea
| | - Xavier Lepró
- The Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Anvar A Zakhidov
- The Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Jeong-Bong Lee
- Department of Electrical Engineering, The University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Geoffrey M Spinks
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Siegmar Roth
- The Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Seon Jeong Kim
- Center for Self-powered Actuation and Department of Biomedical Engineering, Hanyang University, Seoul, 133-791, South Korea
| | - Ray H Baughman
- The Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, TX, 75080, USA
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16
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Sun T, Xu L, Yan Y, Zakhidov AA, Baughman RH, Chen J. Ordered Mesoporous Nickel Sphere Arrays for Highly Efficient Electrocatalytic Water Oxidation. ACS Catal 2016. [DOI: 10.1021/acscatal.5b02571] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tingting Sun
- State
Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Lianbin Xu
- State
Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yushan Yan
- Department
of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Anvar A. Zakhidov
- The
Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75083, United States
- Energy
Efficiency Center, National University of Science and Technology, MISiS, Moscow 119049, Russia
| | - Ray H. Baughman
- The
Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75083, United States
| | - Jianfeng Chen
- State
Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
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17
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Kholmanov IN, Magnuson CW, Piner R, Kim JY, Aliev AE, Tan C, Kim TY, Zakhidov AA, Sberveglieri G, Baughman RH, Ruoff RS. Optical, electrical, and electromechanical properties of hybrid graphene/carbon nanotube films. Adv Mater 2015; 27:3053-3059. [PMID: 25866261 DOI: 10.1002/adma.201500785] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 03/26/2015] [Indexed: 06/04/2023]
Abstract
By combining a graphene layer and aligned multiwalled carbon nanotube (MWNT) sheets in two different configurations, i) graphene on the top of MWNTs and ii) MWNTs on the top of the graphene, it is demonstrated that optical, electrical, and electromechanical properties of the resulting hybrid films depend on configurations.
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Affiliation(s)
- Iskandar N Kholmanov
- Department of Mechanical Engineering and the Materials Science and Engineering Program, University of Texas at Austin, 1 University Station C2200, Austin, TX, 78712, USA
- CNR-INO, Sensor Lab, University of Brescia, via Branze 45, 25123, Brescia, Italy
| | - Carl W Magnuson
- Department of Mechanical Engineering and the Materials Science and Engineering Program, University of Texas at Austin, 1 University Station C2200, Austin, TX, 78712, USA
| | - Richard Piner
- Department of Mechanical Engineering and the Materials Science and Engineering Program, University of Texas at Austin, 1 University Station C2200, Austin, TX, 78712, USA
| | - Jin-Young Kim
- Department of Mechanical Engineering and the Materials Science and Engineering Program, University of Texas at Austin, 1 University Station C2200, Austin, TX, 78712, USA
| | - Ali E Aliev
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083-0688, USA
| | - Cheng Tan
- Department of Mechanical Engineering and the Materials Science and Engineering Program, University of Texas at Austin, 1 University Station C2200, Austin, TX, 78712, USA
| | - Tae Young Kim
- Department of Mechanical Engineering and the Materials Science and Engineering Program, University of Texas at Austin, 1 University Station C2200, Austin, TX, 78712, USA
| | - Anvar A Zakhidov
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083-0688, USA
| | - Giorgio Sberveglieri
- CNR-INO, Sensor Lab, University of Brescia, via Branze 45, 25123, Brescia, Italy
| | - Ray H Baughman
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083-0688, USA
| | - Rodney S Ruoff
- Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689798, Republic of Korea
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18
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Bykova JS, Lima MD, Haines CS, Tolly D, Salamon MB, Baughman RH, Zakhidov AA. Flexible, ultralight, porous superconducting yarns containing shell-core magnesium diboride-carbon nanotube nanofibers. Adv Mater 2014; 26:7510-7515. [PMID: 25319360 DOI: 10.1002/adma.201402794] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 08/14/2014] [Indexed: 06/04/2023]
Abstract
Magnesium-diboride-coated carbon nanotube arrays are synthesized by templating carbon-nanotube aerogel sheets with boron and then converting the boron to MgB2. The resultant MgB2-CNT sheets are twisted into flexible, light-weight yarns that have a superconducting transition around 37.8 K and critical current and critical field comparable with those of existing MgB2 wires, but have about 20 times lower density than bulk MgB2.
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Affiliation(s)
- Julia S Bykova
- The University of Texas at Dallas, The Alan G MacDiarmid NanoTech Institute, 800 West Campbell Road BE26, Richardson, Texas, 75080, USA; The University of Texas at Dallas, Physics Department, 800 West Campbell Road PHY36, Richardson, Texas, 75080, USA
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19
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Abstract
ABSTRACTRecently, major advances have been made in electrolytic and solid state DSSCs through the use of perovskite nanocrystals as a sensitizing agent where power conversion efficiencies of over 12% have been realized [1–3]. Moreover the planar DSSC/PV devices with perovskites used as photoactive absorbers sandwiched between selective electron and hole transport layers have demonstrated record performances. Additionally, the uses of carbon nanotubes (CNTs) as a flexible, transparent, lightweight and robust electrode material have been demonstrated in both DSSC as well as OPV devices. The application of CNTs as a charge collector with perovskite sensitized solid state planar PV and DSSCs is discussed. Performance characteristics of CNTs within perovskite based hybrid OPVs are investigated and the role of CNTs as an efficient charge collector is extended to the inverted geometry.
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20
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Anand B, Podila R, Ayala P, Oliveira L, Philip R, Sai SSS, Zakhidov AA, Rao AM. Nonlinear optical properties of boron doped single-walled carbon nanotubes. Nanoscale 2013; 5:7271-7276. [PMID: 23817830 DOI: 10.1039/c3nr01803b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Single-walled carbon nanotubes (SWCNTs) exhibit excellent nonlinear optical (NLO) properties due to the delocalized π electron states present along their tube axis. Using the open aperture Z-scan method in tandem with X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy, we demonstrate the simultaneous tailoring of both electronic and NLO properties of SWCNTs, from ultrafast (femtosecond) to relatively slow (nanosecond) timescales, by doping with a single substituent, viz., boron. SWCNTs were doped via a wet chemical method using B2O3, and the boron content and bonding configurations were identified using XPS. While in the ns excitation regime, the nonlinear absorption was found to increase with increasing boron concentration in the SWCNTs (due to the increasing disorder and enhanced metallicity of the SWCNTs), the saturation intensity in the fs excitation regime decreased. We attribute this counter-intuitive behavior to excited state absorption on ns timescales, and saturable absorption combined with weak two-photon transitions on fs timescales between van Hove singularities.
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Affiliation(s)
- Benoy Anand
- Department of Physics, Sri Sathya Sai Institute of Higher Learning, Prashanti Nilayam, Andhra Pradesh 515134, India
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21
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Elkassih SA, Sista P, Magurudeniya HD, Papadimitratos A, Zakhidov AA, Biewer MC, Stefan MC. Phenothiazine Semiconducting Polymer for Light-Emitting Diodes. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201200642] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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22
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Galvan-Garcia P, Keefer EW, Yang F, Zhang M, Fang S, Zakhidov AA, Baughman RH, Romero MI. Robust cell migration and neuronal growth on pristine carbon nanotube sheets and yarns. Journal of Biomaterials Science, Polymer Edition 2012; 18:1245-61. [DOI: 10.1163/156856207782177891] [Citation(s) in RCA: 139] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Pedro Galvan-Garcia
- a Regenerative Neurobiology Research Division, Texas Scottish Rite Hospital for Children, Dallas, TX, USA
| | - Edward W. Keefer
- b Department of Plastic Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-8560, USA; Biomedical Engineering Program, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-8560, USA
| | - Fan Yang
- c Regenerative Neurobiology Research Division, Texas Scottish Rite Hospital for Children, Dallas, TX, USA
| | - Mei Zhang
- d NanoTech Institute, University of Texas at Dallas, Richardson, TX, USA
| | - Shaoli Fang
- e NanoTech Institute, University of Texas at Dallas, Richardson, TX, USA
| | - Anvar A. Zakhidov
- f NanoTech Institute, University of Texas at Dallas, Richardson, TX, USA
| | - Ray H. Baughman
- g NanoTech Institute, University of Texas at Dallas, Richardson, TX, USA
| | - Mario I Romero
- h Regenerative Neurobiology Research Division, Texas Scottish Rite Hospital for Children, Dallas, TX, USA; Department of Plastic Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-8560, USA; Biomedical Engineering Program, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-8560, USA; Department of Neurology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-8560,
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23
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Kuznetsov AA, Fonseca AF, Baughman RH, Zakhidov AA. Structural model for dry-drawing of sheets and yarns from carbon nanotube forests. ACS Nano 2011; 5:985-993. [PMID: 21294525 DOI: 10.1021/nn102405u] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A structural model is developed for describing the solid-state transformation of a vertically oriented carbon multiwall nanotube (MWNT) forest to a horizontally oriented MWNT sheet or yarn. The key element of our model is a network of individual carbon nanotubes or small bundles interconnecting the array of main large-diameter MWNT bundles of the forest. The dry-draw self-assembly mechanism for MWNT sheet formation involves two principal processes that reconfigure the interconnection network: (1) unzipping by preferentially peeling off interconnections between the bundles in the forest and (2) self-strengthening of these interconnections by densification at the top and bottom of the forest during draw-induced reorientation of the bundles. It is shown that interconnection density is a key parameter that determines the ability of a MWNT forest to be dry-drawable into sheets and yarns. This model describes the principal mechanism of solid-state draw (confirmed by dynamic in situ scanning electron microscopy), the range of forest structural parameters that enable sheet draw, and observed dependencies of sheet properties on the parent MWNT forest structure.
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Affiliation(s)
- Alexander A Kuznetsov
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75083, USA
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24
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Abstract
ABSTRACTWe report a nearly twofold increase of short circuit current: from Isc ∼ 10 mA/cm2 to Isc = 16–20 mA/cm2 in P3HT/PCBM solar cells (SC) employing freshly prepared regio-regular poly(3-hexylthiophene) (RR-P3HT) without special purification. The power conversion efficiency is enhanced to η≥ 4% as compared to our best η=3.8% in SC with commercial polymer despite the decreased filling factor (FF= 0.42, as compared to best FF = 0.59). We used our earlier found [1] procedures with optimal post heat treatment temperatures and time for our polymer SC. We also discovered a strong correlation between the device preparation procedures and performance. The optimal phase separation of PCBM and RR-P3HT into a bi-continuous network structure occurs after quite long solution stirring times (enhanced homogenization) and surprisingly very short annealing time at optimal temperature. We also found that the optimal concentration of PCBM in a RR-P3HT matrix is rather low, only c∼35 wt%, contrary to high c∼80 wt% in PPV based SC.
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25
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Fang S, Zhang M, Zakhidov AA, Baughman RH. Structure and process-dependent properties of solid-state spun carbon nanotube yarns. J Phys Condens Matter 2010; 22:334221. [PMID: 21386511 DOI: 10.1088/0953-8984/22/33/334221] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The effects of processing conditions and apparent nanotube length on properties are investigated for carbon nanotube yarns obtained by solid-state drawing of an aerogel from a forest of multi-walled carbon nanotubes. Investigation of twist, false twist, liquid densification and combination methods for converting the drawn aerogel into dense yarn show that permanent twist is not needed for obtaining useful mechanical properties when nanotube lengths are long compared with nanotube diameters. Average mechanical strengths of 800 MPa were obtained for polymer-free twist-spun multi-walled carbon nanotube (MWNT) yarns and average mechanical strengths of 1040 MPa were obtained for MWNT yarns infiltrated with 10 wt% polystyrene solution. Strategies for increasing the mechanical properties are suggested based on analysis of intra-wall, intra-bundle and inter-bundle stress transfer.
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Affiliation(s)
- Shaoli Fang
- The Alan G MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX 75083, USA.
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26
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Hu R, Cola BA, Haram N, Barisci JN, Lee S, Stoughton S, Wallace G, Too C, Thomas M, Gestos A, Cruz MED, Ferraris JP, Zakhidov AA, Baughman RH. Harvesting waste thermal energy using a carbon-nanotube-based thermo-electrochemical cell. Nano Lett 2010; 10:838-846. [PMID: 20170193 DOI: 10.1021/nl903267n] [Citation(s) in RCA: 139] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Low efficiencies and costly electrode materials have limited harvesting of thermal energy as electrical energy using thermo-electrochemical cells (or "thermocells"). We demonstrate thermocells, in practical configurations (from coin cells to cells that can be wrapped around exhaust pipes), that harvest low-grade thermal energy using relatively inexpensive carbon multiwalled nanotube (MWNT) electrodes. These electrodes provide high electrochemically accessible surface areas and fast redox-mediated electron transfer, which significantly enhances thermocell current generation capacity and overall efficiency. Thermocell efficiency is further improved by directly synthesizing MWNTs as vertical forests that reduce electrical and thermal resistance at electrode/substrate junctions. The efficiency of thermocells with MWNT electrodes is shown to be as high as 1.4% of Carnot efficiency, which is 3-fold higher than for previously demonstrated thermocells. With the cost of MWNTs decreasing, MWNT-based thermocells may become commercially viable for harvesting low-grade thermal energy.
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Affiliation(s)
- Renchong Hu
- Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75083, USA
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27
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Abstract
Three-dimensionally ordered arrays of submicron-sized mesoporous titania spheres with high surface area and high crystallinity have been prepared through triblock copolymer templating within the confinement of polymer inverse opals.
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Affiliation(s)
- Jianfeng Chen
- Key Lab for Nanomaterials
- Ministry of Education
- Beijing University of Chemical Technology
- Beijing
- China
| | - Zhongjiong Hua
- Key Lab for Nanomaterials
- Ministry of Education
- Beijing University of Chemical Technology
- Beijing
- China
| | - Yushan Yan
- Department of Chemical and Environmental Engineering
- University of California
- Riverside
- USA
| | - Anvar A. Zakhidov
- The Alan G. Macdiarmid NanoTech Institute
- University of Texas at Dallas
- Richardson
- USA
| | - Ray H. Baughman
- The Alan G. Macdiarmid NanoTech Institute
- University of Texas at Dallas
- Richardson
- USA
| | - Lianbin Xu
- Key Lab for Nanomaterials
- Ministry of Education
- Beijing University of Chemical Technology
- Beijing
- China
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28
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Yoshino K, Akashi T, Yoshimoto K, Yoshida M, Morita S, Zakhidov AA. Novel Optical Properties of Fullerene Doped Conducting Polymers: Scenario of Photo Process, Persistent Photoconductivity and Enhanced Electroluminescence Quenching. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259408039265] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Katsumi Yoshino
- a Department of Electronic Engineering , Faculty of Engineering, Osaka University , Yamada-Oka, Suita, Osaka , Japan
| | - Tatsuo Akashi
- a Department of Electronic Engineering , Faculty of Engineering, Osaka University , Yamada-Oka, Suita, Osaka , Japan
| | - Kenji Yoshimoto
- a Department of Electronic Engineering , Faculty of Engineering, Osaka University , Yamada-Oka, Suita, Osaka , Japan
| | - Masayoshi Yoshida
- a Department of Electronic Engineering , Faculty of Engineering, Osaka University , Yamada-Oka, Suita, Osaka , Japan
| | - Shigenori Morita
- a Department of Electronic Engineering , Faculty of Engineering, Osaka University , Yamada-Oka, Suita, Osaka , Japan
| | - Anvar A. Zakhidov
- a Department of Electronic Engineering , Faculty of Engineering, Osaka University , Yamada-Oka, Suita, Osaka , Japan
- b Department of Thermophysics , Uzbek Academy of Sciences , Katartal 28 Chilanzar C, Tashkent , 700135 , Uzbekistan
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29
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Affiliation(s)
- Akihiro Otsuka
- a Division of Chemistry , Graduate School of Science, Kyoto University , Kyoto , 606-01 , Japan
- b Institute for Molecular Science , Okazaki 444, Japan
- c Institute for Protein Research, Osaka University , Yamadaoka, Suita, Osaka , 565 , Japan
| | - Gunzi Saito
- a Division of Chemistry , Graduate School of Science, Kyoto University , Kyoto , 606-01 , Japan
- b Institute for Molecular Science , Okazaki 444, Japan
- c Institute for Protein Research, Osaka University , Yamadaoka, Suita, Osaka , 565 , Japan
| | | | - Kyuya Yakushi
- b Institute for Molecular Science , Okazaki 444, Japan
| | - Masami Kusunoki
- c Institute for Protein Research, Osaka University , Yamadaoka, Suita, Osaka , 565 , Japan
| | - Ken-Ichi Sakaguchi
- c Institute for Protein Research, Osaka University , Yamadaoka, Suita, Osaka , 565 , Japan
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30
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Yoshino K, Nakayama K, Kawagishi Y, Tatsuhara S, Ozaki M, Zakhidov AA. Properties of Liquid Crystals in Photonic Crystal, Synthetic Opal. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259908025966] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Katsumi Yoshino
- a Department of Electronic Engineering , Faculty of Engineering, Osaka University , 2–1 Yamada-Oka, Suita , Osaka , 565‐0871 , JAPAN
| | - Keizo Nakayama
- a Department of Electronic Engineering , Faculty of Engineering, Osaka University , 2–1 Yamada-Oka, Suita , Osaka , 565‐0871 , JAPAN
| | - Yoshiaki Kawagishi
- a Department of Electronic Engineering , Faculty of Engineering, Osaka University , 2–1 Yamada-Oka, Suita , Osaka , 565‐0871 , JAPAN
| | - Satoshi Tatsuhara
- a Department of Electronic Engineering , Faculty of Engineering, Osaka University , 2–1 Yamada-Oka, Suita , Osaka , 565‐0871 , JAPAN
| | - Masanori Ozaki
- a Department of Electronic Engineering , Faculty of Engineering, Osaka University , 2–1 Yamada-Oka, Suita , Osaka , 565‐0871 , JAPAN
| | - Anvar A. Zakhidov
- b Department of Thermophysics , Uzbek Academy of Science , Tashkent , UZBEKISTAN
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31
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Affiliation(s)
- Akihiro Otsuka
- a Division Of Chemistry, Graduate School Of Science , Kyoto University , Kyoto , 606-01 , Japan
| | - Gunzi Saito
- a Division Of Chemistry, Graduate School Of Science , Kyoto University , Kyoto , 606-01 , Japan
| | - Takahiro Teramoto
- a Division Of Chemistry, Graduate School Of Science , Kyoto University , Kyoto , 606-01 , Japan
| | - Yasunari Sugita
- a Division Of Chemistry, Graduate School Of Science , Kyoto University , Kyoto , 606-01 , Japan
| | - Toshiro Ban
- a Division Of Chemistry, Graduate School Of Science , Kyoto University , Kyoto , 606-01 , Japan
| | - Anvar A. Zakhidov
- a Division Of Chemistry, Graduate School Of Science , Kyoto University , Kyoto , 606-01 , Japan
- b Institute for Molecular Science , Okazaki , 444 , Japan
| | - Kyuya Yakushi
- a Division Of Chemistry, Graduate School Of Science , Kyoto University , Kyoto , 606-01 , Japan
- b Institute for Molecular Science , Okazaki , 444 , Japan
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32
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Yoshino K, Yin XH, Akashi T, Yoshimoto K, Morita S, Zakhidov AA. Novel Photophysical Properties of Fullerene Doped Conducting Polymers. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259408029791] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Katsumi Yoshino
- a Department of Electronic Engineering, Faculty of Engineering , Osaka University , Yamada-Oka, Suita , Osaka , Japan
| | - Xiao Hong Yin
- a Department of Electronic Engineering, Faculty of Engineering , Osaka University , Yamada-Oka, Suita , Osaka , Japan
| | - Tatsuo Akashi
- a Department of Electronic Engineering, Faculty of Engineering , Osaka University , Yamada-Oka, Suita , Osaka , Japan
| | - Kenji Yoshimoto
- a Department of Electronic Engineering, Faculty of Engineering , Osaka University , Yamada-Oka, Suita , Osaka , Japan
| | - Shigenori Morita
- a Department of Electronic Engineering, Faculty of Engineering , Osaka University , Yamada-Oka, Suita , Osaka , Japan
| | - Anvar A. Zakhidov
- a Department of Electronic Engineering, Faculty of Engineering , Osaka University , Yamada-Oka, Suita , Osaka , Japan
- b Department of Thermophysics , Uzbek Academy of Science , Katartal 28 Chilanzar, C. Tashkent, 700135 , Uzbekistan
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33
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Darmanyan SA, Nevière M, Zakhidov AA. Nonlinear surface waves at the interfaces of left-handed electromagnetic media. Phys Rev E Stat Nonlin Soft Matter Phys 2005; 72:036615. [PMID: 16241600 DOI: 10.1103/physreve.72.036615] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2004] [Revised: 07/21/2005] [Indexed: 05/05/2023]
Abstract
We report the existence of families of nonlinear TE-polarized surface waves propagating along the interface between different conventional and left-handed electromagnetic media as well as between two left-handed media. Both nonlinear/nonlinear and linear/nonlinear interfaces are considered. The constraints for the mode existence are identified and the energy flow associated with the surface modes is calculated.
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Affiliation(s)
- S A Darmanyan
- Institute of Spectroscopy, Russian Academy of Sciences, 142190 Troitsk, Russia.
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34
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Zhang M, Fang S, Zakhidov AA, Lee SB, Aliev AE, Williams CD, Atkinson KR, Baughman RH. Strong, Transparent, Multifunctional, Carbon Nanotube Sheets. Science 2005; 309:1215-9. [PMID: 16109875 DOI: 10.1126/science.1115311] [Citation(s) in RCA: 568] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Individual carbon nanotubes are like minute bits of string, and many trillions of these invisible strings must be assembled to make useful macroscopic articles. We demonstrated such assembly at rates above 7 meters per minute by cooperatively rotating carbon nanotubes in vertically oriented nanotube arrays (forests) and made 5-centimeter-wide, meter-long transparent sheets. These self-supporting nanotube sheets are initially formed as a highly anisotropic electronically conducting aerogel that can be densified into strong sheets that are as thin as 50 nanometers. The measured gravimetric strength of orthogonally oriented sheet arrays exceeds that of sheets of high-strength steel. These nanotube sheets have been used in laboratory demonstrations for the microwave bonding of plastics and for making transparent, highly elastomeric electrodes; planar sources of polarized broad-band radiation; conducting appliqués; and flexible organic light-emitting diodes.
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Affiliation(s)
- Mei Zhang
- NanoTech Institute, University of Texas at Dallas, Richardson, TX 75083-0688, USA
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35
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Abstract
Many potential applications have been proposed for carbon nanotubes, including conductive and high-strength composites; energy storage and energy conversion devices; sensors; field emission displays and radiation sources; hydrogen storage media; and nanometer-sized semiconductor devices, probes, and interconnects. Some of these applications are now realized in products. Others are demonstrated in early to advanced devices, and one, hydrogen storage, is clouded by controversy. Nanotube cost, polydispersity in nanotube type, and limitations in processing and assembly methods are important barriers for some applications of single-walled nanotubes.
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Affiliation(s)
- Ray H Baughman
- NanoTech Institute, University of Texas at Dallas, Richardson, TX 75083-0688, USA.
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36
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Gartstein YN, Zakhidov AA, Baughman RH. Charge-induced anisotropic distortions of semiconducting and metallic carbon nanotubes. Phys Rev Lett 2002; 89:045503. [PMID: 12144489 DOI: 10.1103/physrevlett.89.045503] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2002] [Indexed: 05/23/2023]
Abstract
To accommodate extra electrons or holes injected into a single-wall carbon nanotube, carbon-carbon bonds adjust their lengths. Resulting changes in carbon-nanotube length as a function of charge injection provide the basis for electromechanical actuators. We show that a key mechanism at low injection levels, modulation of electron kinetic energy, provides nanotube deformations that are both anisotropic and strongly dependent on nanotube structure. Nanotubes can exhibit both expansion and contraction, as well as nonmonotonic size changes. The magnitude of the actuation response of semiconducting carbon nanotubes may be substantially larger than that of graphite.
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Affiliation(s)
- Yu N Gartstein
- Xerox Corporation, 147-59B, 800 Phillips Road, Webster, New York 14580, USA
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37
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Huang J, Eradat N, Raikh ME, Vardeny ZV, Zakhidov AA, Baughman RH. Anomalous coherent backscattering of light from opal photonic crystals. Phys Rev Lett 2001; 86:4815-4818. [PMID: 11384355 DOI: 10.1103/physrevlett.86.4815] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2000] [Indexed: 05/23/2023]
Abstract
We studied coherent backscattering (CBS) of light from opal photonic crystals with incomplete band gaps. We observed a dramatic broadening of the CBS cone for incident angles close to the Bragg condition in the crystals. We modify the conventional CBS theory to incorporate Bragg attenuation resulting from the photonic band structure. By fitting the CBS data with the modified theory, we extract both the disorder-induced light mean-free path and the Bragg attenuation length of the inherent opal photonic crystal.
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Affiliation(s)
- J Huang
- Department of Physics, University of Utah, Salt Lake City, UT 84112, USA
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38
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Kang D, Maclennan JE, Clark NA, Zakhidov AA, Baughman RH. Electro-optic behavior of liquid-crystal-filled silica opal photonic crystals: effect of liquid-crystal alignment. Phys Rev Lett 2001; 86:4052-4055. [PMID: 11328093 DOI: 10.1103/physrevlett.86.4052] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2000] [Indexed: 05/23/2023]
Abstract
Photonic crystals made of nematic liquid crystal intercalated into the void space of close-packed silica spheres (synthetic porous opal) exhibit significant electric-field-induced shift of the optical Bragg reflection peak when the liquid crystal has the long molecular axis oriented parallel to the sphere surfaces. No such effect is observed for comparable fields when the long-axis orientation is normal to the sphere surfaces.
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Affiliation(s)
- D Kang
- Department of Physics, Ferroelectric Liquid Crystal Materials Research Center, University of Colorado, Boulder, Colorado 80309, USA
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39
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Xu L, Zhou W, Kozlov ME, Khayrullin II, Udod I, Zakhidov AA, Baughman RH, Wiley JB. Metal sphere photonic crystals by nanomolding. J Am Chem Soc 2001; 123:763-4. [PMID: 11456602 DOI: 10.1021/ja005733y] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- L Xu
- Department of Chemistry and the Advanced Materials Research Institute University of New Orleans New Orleans, Louisiana 70148-2820, USA
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40
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Abstract
Negative Poisson's ratios are predicted for body-centered-cubic phases that likely exist in white dwarf cores and neutron star outer crusts, as well as those found for vacuumlike ion crystals, plasma dust crystals, and colloidal crystals (including certain virus crystals). The existence of this counterintuitive property, which means that a material laterally expands when stretched, is experimentally demonstrated for very low density crystals of trapped ions. At very high densities, the large predicted negative and positive Poisson's ratios might be important for understanding the asteroseismology of neutron stars and white dwarfs and the effect of stellar stresses on nuclear reaction rates. Giant Poisson's ratios are both predicted and observed for highly strained coulombic photonic crystals, suggesting possible applications of large, tunable Poisson's ratios for photonic crystal devices.
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Affiliation(s)
- RH Baughman
- Honeywell International, Honeywell Technology Center, Morristown, NJ 07962-1021, USA. Departamento de Fisica, Universidade Federal de Juiz de Fora (UFJF), Juiz de Fora, 36036-330, Mina Gerais, Brazil. Department of Physics and Measurement Technolo
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41
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Xu L, Wiley JB, Zhou WL, Frommen C, Malkinski L, Wang JQ, Baughman RH, Zakhidov AA. Electrodeposited nickel and gold nanoscale metal meshes with potentially interesting photonic properties. Chem Commun (Camb) 2000. [DOI: 10.1039/b000404i] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Baughman RH, Cui C, Zakhidov AA, Iqbal Z, Barisci JN, Spinks GM, Wallace GG, Mazzoldi A, Rinzler AG, Jaschinski O, Roth S, Kertesz M. Carbon nanotube actuators. Science 1999; 284:1340-4. [PMID: 10334985 DOI: 10.1126/science.284.5418.1340] [Citation(s) in RCA: 826] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Electromechanical actuators based on sheets of single-walled carbon nanotubes were shown to generate higher stresses than natural muscle and higher strains than high-modulus ferroelectrics. Like natural muscles, the macroscopic actuators are assemblies of billions of individual nanoscale actuators. The actuation mechanism (quantum chemical-based expansion due to electrochemical double-layer charging) does not require ion intercalation, which limits the life and rate of faradaic conducting polymer actuators. Unlike conventional ferroelectric actuators, low operating voltages of a few volts generate large actuator strains. Predictions based on measurements suggest that actuators using optimized nanotube sheets may eventually provide substantially higher work densities per cycle than any previously known technology.
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Affiliation(s)
- RH Baughman
- Research and Technology, AlliedSignal, 101 Columbia Road, Morristown, NJ 07962-1021, USA. Intelligent Polymer Research Institute, University of Wollongong, New South Wales 2522, Australia. School of Engineering, University of Pisa, Centro E. Pia
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43
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Zakhidov AA, Khayrullin III, Baughman RH, Iqbal Z, Yoshino K, Kawagishi Y, Tatsuhara S. CVD synthesis of carbon-based metallic photonic crystals. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0965-9773(99)00305-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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44
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Zakhidov AA, Baughman RH, Iqbal Z, Cui C, Khayrullin I, Dantas SO, Marti J, Ralchenko VG. Carbon structures with three-dimensional periodicity at optical wavelengths. Science 1998; 282:897-901. [PMID: 9794752 DOI: 10.1126/science.282.5390.897] [Citation(s) in RCA: 377] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Porous carbons that are three-dimensionally periodic on the scale of optical wavelengths were made by a synthesis route resembling the geological formation of natural opal. Porous silica opal crystals were sintered to form an intersphere interface through which the silica was removed after infiltration with carbon or a carbon precursor. The resulting porous carbons had different structures depending on synthesis conditions. Both diamond and glassy carbon inverse opals resulted from volume filling. Graphite inverse opals, comprising 40-angstrom-thick layers of graphite sheets tiled on spherical surfaces, were produced by surface templating. The carbon inverse opals provide examples of both dielectric and metallic optical photonic crystals. They strongly diffract light and may provide a route toward photonic band-gap materials.
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Affiliation(s)
- AA Zakhidov
- A. A. Zakhidov and I. Khayrullin are at AlliedSignal, Incorporated, Research and Technology, Morristown, NJ 07962-1021, USA, and in the Department of Thermal Physics of the Uzbekistan Academy of Sciences, Katartal 28, Tashkent, Uzbekistan. R. H. Baugh
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45
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Yoshino K, Tada K, Fujii A, Hosoda K, Kawabe SI, Kajii H, Hirohata M, Hidayat R, Araki H, Zakhidov AA, Sugmoto RI, Iyoda M, Ishikawa M, Masuda T. Charge Transfer in Fullerene-Conducting Polymer Compositex: Electronic and Excitonic Properties. ACTA ACUST UNITED AC 1997. [DOI: 10.1080/15363839708013326] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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46
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Tanaka K, Sato T, Yamabe T, Yoshizawa K, Okahara K, Zakhidov AA. Weak suppression of ferromagnetism in tetrakis(dimethylamino)ethylene-(C60)1-x(C70)x. Phys Rev B Condens Matter 1995; 51:990-995. [PMID: 9978249 DOI: 10.1103/physrevb.51.990] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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47
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Gartstein YN, Zakhidov AA, Conwell EM. Isotope effect with nonadiabatic contribution from purely electronic pairing in superconducting fullerides. Phys Rev B Condens Matter 1994; 49:13299-13302. [PMID: 10010264 DOI: 10.1103/physrevb.49.13299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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48
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Tanaka K, Zakhidov AA, Yoshizawa K, Okahara K, Yamabe T, Yakushi K, Kikuchi K, Suzuki S, Ikemoto I, Achiba Y. Magnetic properties of TDAE-C60 and TDAE-C70, where TDAE is tetrakis(dimethylamino)ethylene. Phys Rev B Condens Matter 1993; 47:7554-7559. [PMID: 10004751 DOI: 10.1103/physrevb.47.7554] [Citation(s) in RCA: 116] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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