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Xu K, Deng S, Liang T, Cao X, Han M, Zeng X, Zhang Z, Yang N, Wu J. Efficient mechanical modulation of the phonon thermal conductivity of Mo 6S 6 nanowires. NANOSCALE 2022; 14:3078-3086. [PMID: 35138319 DOI: 10.1039/d1nr08505k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Mo6S6 nanowires are emerging as key building blocks for flexible devices and are competitive with carbon nanotubes due to easier separation and functionalization. Here, it is reported the phonon thermal conductivity (κ) of Mo6S6 nanowires via molecular dynamics simulations. It shows a large tunability of low-frequency phonon thermal conductivity (κlf)Amax from 27.2-191 W (m K)-1, an increase of around 702% via mechanical strain. Below critical tension/torsion strain, their phonon thermal conductivity monotonically reduces/enlarges; whereas above this value, an inverse trend is identified. On the other hand, Mo6S6 nanowires show unusual auxetic behavior. The transitions involved in phonon thermal conductivity are molecularly illustrated by a strain-induced crossover in bond configurations and are explained based on a competition mechanism between phonon scattering and group velocity. This study provides insights into the thermal transport and auxetic properties of low-dimensional structures and the thermal management of Mo6S6 nanowire-based systems.
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Affiliation(s)
- Ke Xu
- Department of Physics, Research Institute for Biomimetics and Soft Matter, Jiujiang Research Institute and Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, PR China.
| | - Shichen Deng
- State Key Laboratory of Coal Combustion, and School of Energy and Power Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074 PR China.
| | - Ting Liang
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, PR China
| | - Xuezheng Cao
- Department of Physics, Research Institute for Biomimetics and Soft Matter, Jiujiang Research Institute and Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, PR China.
| | - Meng Han
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, PR China
| | - Xiaoliang Zeng
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, PR China
| | - Zhisen Zhang
- Department of Physics, Research Institute for Biomimetics and Soft Matter, Jiujiang Research Institute and Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, PR China.
| | - Nuo Yang
- State Key Laboratory of Coal Combustion, and School of Energy and Power Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074 PR China.
| | - Jianyang Wu
- Department of Physics, Research Institute for Biomimetics and Soft Matter, Jiujiang Research Institute and Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, PR China.
- NTNU Nanomechanical Lab, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway
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Liu Z, Zhang Z, Zhao HY, Wang J, Liu Y. Lattice dynamics of graphene nanoribbons under twisting. Phys Chem Chem Phys 2021; 23:25485-25489. [PMID: 34757349 DOI: 10.1039/d1cp03806k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this communication, we investigate the lattice dynamics of twisted graphene nanoribbons using the density-functional tight-binding method based on screw symmetry. The results show that the decrease in phonon group velocity induced by twisting reduces the lattice thermal conductivity. Our findings provide inspiration for the design of graphene-based phononic devices tailored by inhomogeneous strain.
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Affiliation(s)
- Zhao Liu
- Department of Physics and Hebei Advanced Thin Film Laboratory, Hebei Normal University, Shijiazhuang 050024, China. .,Beijing Computational Science Research Center, Beijing 100193, China
| | - Zhen Zhang
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
| | - Hui-Yan Zhao
- Department of Physics and Hebei Advanced Thin Film Laboratory, Hebei Normal University, Shijiazhuang 050024, China.
| | - Jing Wang
- Department of Physics and Hebei Advanced Thin Film Laboratory, Hebei Normal University, Shijiazhuang 050024, China.
| | - Ying Liu
- Department of Physics and Hebei Advanced Thin Film Laboratory, Hebei Normal University, Shijiazhuang 050024, China. .,National Key Laboratory for Materials Simulation and Design, Beijing 100083, China
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Khanafer K, Vafai K. A Critical Synthesis of Graphene Thermal Properties and Its Applications. ADVANCES IN HEAT TRANSFER 2016. [DOI: 10.1016/bs.aiht.2016.08.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Hongwei T, Wei F, Rui W, Huiling L, Xuri H. Theoretical study of stabilities, electronic, and catalytic performance of supported platinum on modified graphene. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1037803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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