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[1] Wu Junwei, Tao Yi, Chen Chen, et al. Molecular dynamics simulations of strain-dependent thermalconductivity of single-layer black phosphorus [J]. Journal of Southeast University (English Edition), 2018, (1): 43-47. [doi:10.3969/j.issn.1003-7985.2018.01.007]
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Molecular dynamics simulations of strain-dependent thermalconductivity of single-layer black phosphorus()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
Issue:
2018 1
Page:
43-47
Research Field:
Materials Sciences and Engineering
Publishing date:
2018-03-20

Info

Title:
Molecular dynamics simulations of strain-dependent thermalconductivity of single-layer black phosphorus
Author(s):
Wu Junwei1 2 Tao Yi1 2 Chen Chen1 2 Chen Yuewen1 Chen Yunfei1 2
1School of Mechanical Engineering, Southeast University, Nanjing 211189, China
2Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189, China
Keywords:
molecular dynamics single-layer black phosphorus strain thermal conductivity phonon density of state mean free path
PACS:
TB383
DOI:
10.3969/j.issn.1003-7985.2018.01.007
Abstract:
Classical molecular dynamics(MD)simulations are performed to investigate the effects of mechanical strain on the thermal conductivity of single-layer black phosphorus(SLBP)nanoribbons along different directions at room temperature. The results show that the tensile strain affects the thermal conductivity of nanoribbons by changing the phonon density of state(DOS)and mean free path(MFP). The thermal conductivity shows a sharp enhancement with the tensile strain applied along the armchair direction, while it increases slowly with the strain applied along the zigzag direction. This phenomenon can be mainly explained by effects of the phonon DOS and MFP. The increasing strain along the armchair direction weakens DOS and strengthens MFP clearly. However, when it comes to the increasing strain along the zigzag direction, DOS enhances significantly while MFP decreases slightly. The findings explore the relationship between the tensile strain and the thermal conductivity reasonably and can provide a reliable method to estimate the MFP of black phosphorus.

References:

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Memo

Memo:
Biographies: Wu Junwei(1993—), male, graduate; Chen Yunfei(corresponding author), male, doctor, professor, yunfeichen@seu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.51575104).
Citation: Wu Junwei, Tao Yi, Chen Chen, et al. Molecular dynamics simulations of strain-dependent thermal conductivity of single-layer black phosphorus [J].Journal of Southeast University(English Edition), 2018, 34(1):43-47.DOI:10.3969/j.issn.1003-7985.2018.01.007.
Last Update: 2018-03-20