1
|
Sun D, Zhao Q, Chu S, Cao C, Pei J, Xu X, Ruan S. Multiple Bound State Soliton Pulses in the All Polarization Maintaining Fiber Laser. Micromachines (Basel) 2023; 14:1528. [PMID: 37630064 PMCID: PMC10456334 DOI: 10.3390/mi14081528] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 07/23/2023] [Accepted: 07/27/2023] [Indexed: 08/27/2023]
Abstract
The bound state soliton pulse, a novel mode-locked output state of fiber lasers, has been studied extensively to gain a better understanding of soliton interactions and to explain the mechanism behind the generation of mode-locked pulses. In this particular research, we utilized a self-made saturable absorber (SA) consisting of single-walled carbon nanotubes (SWCNT) in a fully polarization maintaining (PM) erbium-doped fiber optical path. Through this setup, we observed various bound state pulse phenomena, including the double bound state with different phase differences, the bound state formed by two double pulse bound states, the multi-pulse bound state, etc. The abundant bound soliton pulse states demonstrated the excellent nonlinear absorption characteristics of the SA as well as the excellent optical properties of the all-PM fiber laser. It contributed to exploring the relationship between sub pulses and mode-locked pulses in the future. Additionally, due to the strong interaction between bound state solitons and the inherent stability of the PM optical path, there was potential for utilizing this setup as a seed source to enhance the stability of high-power fiber lasers.
Collapse
Affiliation(s)
- Dalin Sun
- College of Integrated Circuits and Optoelectronic Chips, Shenzhen Technology University, Shenzhen 518118, China; (D.S.); (S.C.); (C.C.)
| | - Qi Zhao
- Shenzhen Technology University Hospital, Shenzhen 518118, China;
| | - Shaowen Chu
- College of Integrated Circuits and Optoelectronic Chips, Shenzhen Technology University, Shenzhen 518118, China; (D.S.); (S.C.); (C.C.)
| | - Chunyu Cao
- College of Integrated Circuits and Optoelectronic Chips, Shenzhen Technology University, Shenzhen 518118, China; (D.S.); (S.C.); (C.C.)
| | - Jihong Pei
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, China;
| | - Xintong Xu
- College of Integrated Circuits and Optoelectronic Chips, Shenzhen Technology University, Shenzhen 518118, China; (D.S.); (S.C.); (C.C.)
| | - Shuangchen Ruan
- College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
| |
Collapse
|
2
|
Miao J, Lang Z, Xue T, Li Y, Li Y, Cheng J, Zhang H, Tang Z. Revival of Zeolite-Templated Nanocarbon Materials: Recent Advances in Energy Storage and Conversion. Adv Sci (Weinh) 2020; 7:2001335. [PMID: 33101857 PMCID: PMC7578874 DOI: 10.1002/advs.202001335] [Citation(s) in RCA: 14] [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: 04/10/2020] [Revised: 04/27/2020] [Indexed: 05/05/2023]
Abstract
Nanocarbon materials represent one of the hottest topics in physics, chemistry, and materials science. Preparation of nanocarbon materials by zeolite templates has been developing for more than 20 years. In recent years, novel structures and properties of zeolite-templated nanocarbons have been evolving and new applications are emerging in the realm of energy storage and conversion. Here, recent progress of zeolite-templated nanocarbons in advanced synthetic techniques, emerging properties, and novel applications is summarized: i) thanks to the diversity of zeolites, the structures of the corresponding nanocarbons are multitudinous; ii) by various synthetic techniques, novel properties of zeolite-templated nanocarbons can be achieved, such as hierarchical porosity, heteroatom doping, and nanoparticle loading capacity; iii) the applications of zeolite-templated nanocarbons are also evolving from traditional gas/vapor adsorption to advanced energy storage techniques including Li-ion batteries, Li-S batteries, fuel cells, metal-O2 batteries, etc. Finally, a perspective is provided to forecast the future development of zeolite-templated nanocarbon materials.
Collapse
Affiliation(s)
- Jun Miao
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MOE)Institute of Applied Physics and Material EngineeringUniversity of MacauTaipaMacau SARP. R. China
- Instituto de Ciencia de Materiales MadridCSICMadrid28049Spain
| | - Zhongling Lang
- Polyoxometalate Science of Ministry of EducationNortheast Normal UniversityChangchunJilin130024P. R. China
| | - Tianyu Xue
- Institute of Microscale OptoelectronicsKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen Key Laboratory of Micro‐Nano Photonic Information TechnologyGuangdong Laboratory of Artificial Intelligence and Digital Economy (SZ)Shenzhen UniversityShenzhen518060P. R. China
- Biodesign Center for Biosensors and BioelectronicsBiodesign InstituteArizona State UniversityTempeAZ85281USA
- Center for High Pressure ScienceState Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao066004P. R. China
| | - Yan Li
- Institute of Microscale OptoelectronicsKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen Key Laboratory of Micro‐Nano Photonic Information TechnologyGuangdong Laboratory of Artificial Intelligence and Digital Economy (SZ)Shenzhen UniversityShenzhen518060P. R. China
| | - Yiwen Li
- School of Material Science and EngineeringHubei UniversityWuhan430062P. R. China
- Department of ChemistryPurdue UniversityWest LafayetteIN47907USA
| | - Jiaji Cheng
- School of Material Science and EngineeringHubei UniversityWuhan430062P. R. China
| | - Han Zhang
- Institute of Microscale OptoelectronicsKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen Key Laboratory of Micro‐Nano Photonic Information TechnologyGuangdong Laboratory of Artificial Intelligence and Digital Economy (SZ)Shenzhen UniversityShenzhen518060P. R. China
| | - Zikang Tang
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MOE)Institute of Applied Physics and Material EngineeringUniversity of MacauTaipaMacau SARP. R. China
| |
Collapse
|
3
|
Chen S, Yao Z, Lv H, Dong E, Yang X, Liu R, Liu B. A high pressure Raman study on confined individual iodine molecules as molecular probes of structural collapse in the AlPO 4-5 framework. Phys Chem Chem Phys 2018; 20:26117-26125. [PMID: 30306996 DOI: 10.1039/c8cp04415e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The mechanical stability of porous zeolitic materials has long been an important issue due to their advanced applications in many fields. Here, we choose to study the pressure induced structural modifications on the AlPO4-5 (AFI) framework. We find that the Raman characteristics of the confined iodine molecules in the AFI channels, with a low filling density, show discontinuities at around 3 and 10 GPa, which can be attributed to the implications of framework changes. Subsequent theoretical simulations on the AFI framework demonstrate that both a tilting mechanism along the c axis and a rotating mechanism in the ab plane of the tetrahedrons contribute to the structural deformation, and the AFI framework is collapsible at 4 and 10 GPa, which confirms those values found in the Raman studies. In this nanoconfinement system of I@AFI, the host and guest depend on and interact with each other mutually. No supporting effect on the AFI framework is found for the confined individual iodine molecules with such a low filling density, but they can be regarded as molecular probes to reflect the structural collapse of AFI. Thus, we provide a novel way to detect the structural deformation of porous materials under high pressure.
Collapse
Affiliation(s)
- Shuanglong Chen
- College of New Energy, Bohai University, Jinzhou, Liaoning 121000, China.
| | - Zhen Yao
- Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
| | - Hang Lv
- College of New Energy, Bohai University, Jinzhou, Liaoning 121000, China.
| | - Enlai Dong
- College of New Energy, Bohai University, Jinzhou, Liaoning 121000, China.
| | - Xibao Yang
- Laboratory Management Center, Bohai University, Jinzhou, Liaoning 121000, China
| | - Ran Liu
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, Jilin, 130012, China.
| | - Bingbing Liu
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, Jilin, 130012, China.
| |
Collapse
|
4
|
Zhai J, Fang R, Jian D, Wang Q, Ruan S, Li IL. Intercalating 0.3 nm Single-Walled Carbon Nanotubes in Channels of SAPO-11 Crystals: Structural Changes. ChemistrySelect 2017; 2:10926-30. [DOI: 10.1002/slct.201702207] [Citation(s) in RCA: 1] [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: 11/07/2022]
|
5
|
Abstract
In one-dimensional (1D) systems, the definition of three common states of matter (solid, liquid, and gas) becomes obscure because it has been theoretically predicted that a 1D system has no phase transition. Due to technical difficulty in tracking 1D thermal evolution, hardly any experimental evidence has demonstrated whether there exist these three states. Here we report Raman experimental observation that 1D iodine molecular chains formed inside the nanosized channel undergo continuous transformation from chain structure to single molecules with increasing temperature, without having a sudden change as commonly observed in phase transition. At low temperatures, short-range order exists and manifests itself as long chains in structure, which gradually break into shorter chains with increasing temperature. The 1D system progressively gets more and more disordered, which is in agreement with the theoretical derivations. Our work may benefit the emerging molecular scale electronics.
Collapse
Affiliation(s)
- Dingdi Wang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University , Changchun 130012, China
- Department of Physics, The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong
| | - Haijing Zhang
- Department of Physics, The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong
| | - William W Yu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University , Changchun 130012, China
- Department of Chemistry and Physics, Louisiana State University , Shreveport, Louisiana 71115, United States
| | - Zikang Tang
- The Institute of Applied Physics and Materials Engineering, University of Macau , Avenida da Universidade, Taipa, Macau
| |
Collapse
|
6
|
Abstract
Preparation of chirality-defined single-wall carbon nanotubes (SWCNTs) is the top challenge in the nanotube field. In recent years, great progress has been made toward preparing single-chirality SWCNTs through both direct controlled synthesis and postsynthesis separation approaches. Accordingly, the uses of single-chirality-dominated SWCNTs for various applications have emerged as a new front in nanotube research. In this Review, we review recent progress made in the chirality-controlled synthesis of SWCNTs, including metal-catalyst-free SWCNT cloning by vapor-phase epitaxy elongation of purified single-chirality nanotube seeds, chirality-specific growth of SWCNTs on bimetallic solid alloy catalysts, chirality-controlled synthesis of SWCNTs using bottom-up synthetic strategy from carbonaceous molecular end-cap precursors, etc. Recent major progresses in postsynthesis separation of single-chirality SWCNT species, as well as methods for chirality characterization of SWCNTs, are also highlighted. Moreover, we discuss some examples where single-chirality SWCNTs have shown clear advantages over SWCNTs with broad chirality distributions. We hope this review could inspire more research on the chirality-controlled preparation of SWCNTs and equally important inspire the use of single-chirality SWCNT samples for more fundamental studies and practical applications.
Collapse
Affiliation(s)
- Bilu Liu
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University , Shenzhen, Guangdong 518055, P. R. China
| | | | | | - Ming Zheng
- National Institute of Standards and Technology , Gaithersburg, Maryland 20899, United States
| | | |
Collapse
|
7
|
Liu B, Liu J, Li HB, Bhola R, Jackson EA, Scott LT, Page A, Irle S, Morokuma K, Zhou C. Nearly exclusive growth of small diameter semiconducting single-wall carbon nanotubes from organic chemistry synthetic end-cap molecules. Nano Lett 2015; 15:586-95. [PMID: 25521257 DOI: 10.1021/nl504066f] [Citation(s) in RCA: 43] [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: 05/17/2023]
Abstract
The inability to synthesize single-wall carbon nanotubes (SWCNTs) possessing uniform electronic properties and chirality represents the major impediment to their widespread applications. Recently, there is growing interest to explore and synthesize well-defined carbon nanostructures, including fullerenes, short nanotubes, and sidewalls of nanotubes, aiming for controlled synthesis of SWCNTs. One noticeable advantage of such processes is that no metal catalysts are used, and the produced nanotubes will be free of metal contamination. Many of these methods, however, suffer shortcomings of either low yield or poor controllability of nanotube uniformity. Here, we report a brand new approach to achieve high-efficiency metal-free growth of nearly pure SWCNT semiconductors, as supported by extensive spectroscopic characterization, electrical transport measurements, and density functional theory calculations. Our strategy combines bottom-up organic chemistry synthesis with vapor phase epitaxy elongation. We identify a strong correlation between the electronic properties of SWCNTs and their diameters in nanotube growth. This study not only provides material platforms for electronic applications of semiconducting SWCNTs but also contributes to fundamental understanding of the growth mechanism and controlled synthesis of SWCNTs.
Collapse
Affiliation(s)
- Bilu Liu
- Department of Electrical Engineering and Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States
| | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Affiliation(s)
- Martin Olbrich
- Department
of Chemistry and
Pharmacy, Ludwig-Maximilians-Universität München and Munich Center for Integrated Protein Science, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Peter Mayer
- Department
of Chemistry and
Pharmacy, Ludwig-Maximilians-Universität München and Munich Center for Integrated Protein Science, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Dirk Trauner
- Department
of Chemistry and
Pharmacy, Ludwig-Maximilians-Universität München and Munich Center for Integrated Protein Science, Butenandtstrasse 5-13, 81377 Munich, Germany
| |
Collapse
|
9
|
Wang Y, Zhou B, Yao X, Huang G, Zhang J, Shao Q. Novel structure and abnormal electronic properties of ultra-thin BC2N nanotubes from first-principles investigation. Chem Phys Lett 2014; 616-617:61-6. [DOI: 10.1016/j.cplett.2014.09.055] [Citation(s) in RCA: 6] [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: 11/21/2022]
|
10
|
Xu X, Zhai J, Li L, Chen Y, Yu Y, Zhang M, Ruan S, Tang Z. Passively mode-locking erbium-doped fiber lasers with 0.3 nm single-walled carbon nanotubes. Sci Rep 2014; 4:6761. [PMID: 25342292 PMCID: PMC4208059 DOI: 10.1038/srep06761] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 10/06/2014] [Indexed: 11/09/2022] Open
Abstract
We demonstrate a passively mode-locked erbium-doped fiber laser (EDFL) by using the smallest single-walled carbon nanotubes (SWNTs) with a diameter of 0.3 nm as the saturable absorber. These ultrasmall SWNTs are fabricated in the elliptical nanochannels of a ZnAPO₄-11 (AEL) single crystal. By placing an AEL crystal into an EDFL cavity pumped by a 980 nm laser diode, stable passive mode-locking is achieved for a threshold pump power of 280 mW, and 73 ps pulses at 1563.2 nm with a repetition rate of 26.79 MHz.
Collapse
Affiliation(s)
- Xintong Xu
- Shenzhen Key Laboratory of Laser Engineering, Shenzhen University 518060, Shenzhen, People's Republic of China
| | - Jianpang Zhai
- Shenzhen Key Laboratory of Laser Engineering, Shenzhen University 518060, Shenzhen, People's Republic of China
| | - Ling Li
- Shenzhen Key Laboratory of Laser Engineering, Shenzhen University 518060, Shenzhen, People's Republic of China
| | - Yanping Chen
- Shenzhen Key Laboratory of Laser Engineering, Shenzhen University 518060, Shenzhen, People's Republic of China
| | - Yongqin Yu
- Shenzhen Key Laboratory of Laser Engineering, Shenzhen University 518060, Shenzhen, People's Republic of China
| | - Min Zhang
- Shenzhen Key Laboratory of Laser Engineering, Shenzhen University 518060, Shenzhen, People's Republic of China
| | - Shuangchen Ruan
- Shenzhen Key Laboratory of Laser Engineering, Shenzhen University 518060, Shenzhen, People's Republic of China
| | - Zikang Tang
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People's Republic of China
| |
Collapse
|
11
|
Abstract
We demonstrate a technique to determine the Van der Waals radius of iodine atoms using Raman spectroscopy. The iodine diatomic molecules are diffused into the nano-scale channels of a zeolite single crystal. We found their polarized Raman spectroscopy, which corresponds to iodine molecule's vibrational motion along the direction of molecular axis, is significantly modified by the interaction between the iodine molecules and the rigid frame of the crystal's nano-channels. From the number of excitable vibration quantum states of the confined iodine molecules determined from Raman spectra and the size of the nano-channels, we estimate the iodine atomic radius to be 2.10 ± 0.05 Å. It is the first time that atomic sizes, which are far beyond the optical diffraction limit, have be resolved optically using Raman spectroscopy with the help of nano-scale structures.
Collapse
Affiliation(s)
- Dingdi Wang
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | | | | | | | | | | | | |
Collapse
|
12
|
|
13
|
Abstract
Large-sized MgAPO-11 single crystals (25 × 157 × 254 μm3) have been successfully synthesized by a hydrothermal method in a F− free system.
Collapse
Affiliation(s)
- Yanping Chen
- College of Electronic Science and Technology
- Shenzhen University
- Shenzhen 518060, PR China
- Shenzhen Key Laboratory of Laser Engineering
- Shenzhen University
| | - Jianpang Zhai
- College of Electronic Science and Technology
- Shenzhen University
- Shenzhen 518060, PR China
- Shenzhen Key Laboratory of Laser Engineering
- Shenzhen University
| | - Xintong Xu
- College of Electronic Science and Technology
- Shenzhen University
- Shenzhen 518060, PR China
- Shenzhen Key Laboratory of Laser Engineering
- Shenzhen University
| | - Ireneling Li
- College of Electronic Science and Technology
- Shenzhen University
- Shenzhen 518060, PR China
- Shenzhen Key Laboratory of Laser Engineering
- Shenzhen University
| | - Shuangchen Ruan
- College of Electronic Science and Technology
- Shenzhen University
- Shenzhen 518060, PR China
- Shenzhen Key Laboratory of Laser Engineering
- Shenzhen University
| | - Zikang Tang
- Department of Physics
- Hong Kong University of Science and Technology
- Hong Kong, PR China
| |
Collapse
|
14
|
Mohammed A, Hu W, Andersson PO, Lundquist M, Landström L, Luo Y, Ågren H. Cluster approximations of chemically enhanced molecule-surface Raman spectra: The case of trans-1,2-bis (4-pyridyl) ethylene (BPE) on gold. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.07.005] [Citation(s) in RCA: 13] [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: 10/26/2022]
|
15
|
Deng Q, Zhao L, Luo Y, Zhang M, Jing L, Zhao Y. Ferromagnetism/antiferromagnetism transition between semihydrogenated and fully-aminated single-wall carbon nanotubes. Nanoscale 2011; 3:3743-3746. [PMID: 21804988 DOI: 10.1039/c1nr10445d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We theoretically studied the ferromagnetism/antiferromagnetism (FM/AFM) transition between single-wall carbon nanotubes (SWCNTs) induced by chemical modifications of semihydrogenation (SH-) and full-amination (NH(2)-). We found that armchairs with large diameters of SH-CNTs (n > 3) possess FM functions with intense magnetic moments, while armchair NH(2)-CNTs (n = 4, 6, 8) are antiferromagnetic semiconductors. The FM/AFM transition is mainly dominated by different chemical modifications and sizes of SWCNTs whose distance between carbon atoms of unpaired electrons can regulate the intensity of p-p spin interactions. Moreover, the zigzag SH-CNTs and NH(2)-CNTs are NM semiconductors. Thus, the electronic and magnetic properties of the SH- or NH(2)-CNTs can be precisely modulated by controlling the hydrogenation or amination on the different types and diameters of CNTs, which provides a new and also simple process for magnetism optimization design in SWCNTs.
Collapse
Affiliation(s)
- Qingming Deng
- Department of Physics, East China University of Science and Technology, Shanghai 200237, China
| | | | | | | | | | | |
Collapse
|
16
|
Yin LC, Saito R, Dresselhaus MS. The fermi level dependent electronic properties of the smallest (2,2) carbon nanotube. Nano Lett 2010; 10:3290-3296. [PMID: 20704321 DOI: 10.1021/nl100846u] [Citation(s) in RCA: 1] [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] [Indexed: 05/29/2023]
Abstract
A metal-semiconductor transition in the smallest (2,2) single-wall carbon nanotube (SWNT) is predicted theoretically as a function of gate voltage. By hole-doping (or heavy electron-doping), the energy gap of a neutral (2,2) SWNT vanishes with structural change, and the (2,2) SWNT becomes metallic. The (2,2) tube assumes a doubly degenerate ground state around the charge neutral condition with an energy barrier, while this tube has only one nondegenerate metallic ground state over an energy window of -0.12 to +0.40 eV. Because of a high density of states at the Fermi energy for hole-doped (2,2) SWNTs, a possible superconducting transition is expected.
Collapse
Affiliation(s)
- Li-Chang Yin
- Department of Physics, Tohoku University, Sendai 980-8578, Japan.
| | | | | |
Collapse
|
17
|
Plank W, Pfeiffer R, Schaman C, Kuzmany H, Calvaresi M, Zerbetto F, Meyer J. Electronic structure of carbon nanotubes with ultrahigh curvature. ACS Nano 2010; 4:4515-4522. [PMID: 20731434 DOI: 10.1021/nn100615d] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The electronic and the vibrational structure of carbon nanotubes with ultrahigh curvature was systematically studied by resonance Raman scattering, high-resolution transmission electron microscopy (HRTEM), molecular dynamics, and ab initio DFT calculations. The ultrahigh curvature tubes were grown inside commercial HiPco tubes after filling the latter with the small but carbon-rich molecule ferrocene. TEM showed partial filling of the outer tubes with inner tubes and mobility of the latter in the electron beam. The smallest analyzed tube was of (5,0) chirality and had a DFT determined diameter of 0.406 nm and a radial breathing mode frequency of 570 cm(-1). For all inner tubes which had transitions in the visible spectral range, transition energies and RBM frequencies were determined with a resonance width of only 45 meV. Experimentally determined transition energies revealed dramatic deviations up to several electronvolts compared to tight-binding calculations and a significant family spread of more than 2 eV but were in agreement with many electron contribution corrected extended tight-binding results and with results from DFT calculations.
Collapse
Affiliation(s)
- Wolfgang Plank
- Faculty of Physics, University of Vienna, Strudlhofgasse 4, A-1090 Wien, Austria
| | | | | | | | | | | | | |
Collapse
|
18
|
|
19
|
Yuan J, Huang Y. Structural, electronic and optical properties of smallest (2,2) carbon nanotube: A plane-wave pseudopotential total energy calculation. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.theochem.2009.11.041] [Citation(s) in RCA: 9] [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: 11/28/2022]
|
20
|
Contreras ML, Avila D, Alvarez J, Rozas R. Exploring the structural and electronic properties of nitrogen-containing exohydrogenated carbon nanotubes: a quantum chemistry study. Struct Chem 2010; 21:573-81. [DOI: 10.1007/s11224-010-9587-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
21
|
Mohammed A, Ågren H, Thorvaldsen AJ, Ruud K. Ab initio study of coherent anti-Stokes Raman scattering (CARS) of the 1,3,5-trinitro-1,3,5-triazacyclohexane (RDX) explosive. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2009.12.061] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
22
|
|
23
|
Abstract
We show, by molecular dynamics simulations, that 2:1 internal resonance may occur between a radial breathing mode (RBM) and a circumferential flexural mode (CFM) in single-walled carbon nanotubes (SWCNTs). When the RBM vibration amplitude is greater than a critical value, automatic transformations between the RBM and CFM with approximately half RBM-frequency are observed. This discovery in the discrete SWCNT atom assembly is similar to the 2:1 internal resonance mechanism observed in continuum shells. A non-local continuum shell model is employed to determine the critical conditions for the occurrence of observed 2:1 internal resonance between the RBM and CFMs based on two non-dimensional parameters and the Mathieu stability diagram.
Collapse
Affiliation(s)
- M. X. Shi
- School of Mechanical, Aerospace and Civil Engineering, Pariser Building, University of Manchester, PO Box 88, Manchester M60 1QD, UK
- Department of Engineering Mechanics, College of Science, Chang’an University, Xi’an 710064, People’s Republic of China
| | - Q. M. Li
- School of Mechanical, Aerospace and Civil Engineering, Pariser Building, University of Manchester, PO Box 88, Manchester M60 1QD, UK
| | - Y. Huang
- Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208, USA
| |
Collapse
|
24
|
Mohammed A, Ågren H, Norman P. Time-dependent density functional theory for resonant properties: resonance enhanced Raman scattering from the complex electric-dipole polarizability. Phys Chem Chem Phys 2009; 11:4539-48. [DOI: 10.1039/b903250a] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
25
|
Mohammed A, Ågren H, Norman P. Resonance enhanced Raman scattering from the complex electric-dipole polarizability: A theoretical study on N2. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2008.11.063] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|