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Phosphorene, a new two-dimensional material beyond graphene, has received increasing attention in recent years owing to its superior physical properties of significant utility. Herein we carry out molecular dynamics simulations to systematically study the mechanical and thermal properties of phosphorene under shear loadings. It is found that the shear modulus of phosphorene is about 22 GPa in both the armchair direction and zigzag direction. The fracture strength and ultimate strain of phosphorene can be significantly reduced owing to stronger thermal vibrations of atoms at a higher temperature. The thermal conductivity of pristine phosphorene at room temperature is obtained, specifically, it is 18.57 W·m–1·K–1 along the armchair direction and 52.52 W·m–1·K–1 in the zigzag direction. When either an armchair- or a zigzag-oriented shear strain is applied, the armchair-oriented thermal conductivity decreases monotonically with the strain increasing. Whereas the zigzag-oriented thermal conductivity exhibits a non-monotonic behavior. The strain-induced redshift occurs in the high-frequency phonons of out-of-plane flexural modes in the phonon density of states of the sheared phosphorene. In addition, the buckled structure of phosphorene will lead the deformation characteristics under the shear strain differ from those of the planar structure such as graphene, which has a significant influence on the lattice anharmonicity and phonon scattering. It is believed that the interplay between the shift of phonon density of states and the change of phonon scattering channels results in the unique thermal transport behavior of phosphorene under shear deformation. The findings provide an insight into the understanding of the mechanical and thermal properties of phosphorene, and have significance for the future applications in phosphorene-based novel devices.
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Keywords:
- phosphorene /
- shear deformation /
- thermal conductivity /
- molecular dynamics
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表 1 磷烯的剪切力学性能
Table 1. Mechanical properties of phosphorene under shear loading.
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[1] Geim A K 2009 Science 324 1530Google Scholar
[2] Xu M, Liang T, Shi M, Chen H 2013 Chem. Rev. 113 3766Google Scholar
[3] Cai Z, Liu B, Zou X, Cheng H M 2018 Chem. Rev. 118 6091Google Scholar
[4] Lin Y, Connellb J W 2012 Nanoscale 4 6908Google Scholar
[5] Manzeli S, Ovchinnikov D, Pasquier D, Yazyev O V, Kis A 2017 Nat. Rev. Mater. 2 17033Google Scholar
[6] Balendhran S, Walia S, Nili H, Sriram S, Bhaskaran M 2015 Small 11 640Google Scholar
[7] Carvalho A, Wang M, Zhu X, Rodin A S, Su H, Neto A H C 2016 Nat. Rev. Mater. 1 16061Google Scholar
[8] Batmunkh M, Bat-Erdene M, Shapter J G 2016 Adv. Mater. 28 8586Google Scholar
[9] Akinwande D, Petrone N, Hone J 2014 Nat. Commun. 5 5678Google Scholar
[10] Novoselov K S, Mishchenko A, Carvalho A, Neto A H C 2016 Science 353 aac9439Google Scholar
[11] Bonaccorso F, Colombo L, Yu G, Stoller M, Tozzini V, Ferrari A C, Ruoff R S, Pellegrini V 2015 Science 347 1246501Google Scholar
[12] Jia P Z, Xie Z X, Deng Y X, Zhang Y, Tang L M, Zhou W X, Chen K Q 2022 Appl. Phys. Lett. 121 043901Google Scholar
[13] Zhou W X, Cheng Y, Chen K Q, Xie G, Wang T, Zhang G 2020 Adv. Funct. Mater. 30 1903829Google Scholar
[14] Liu H, Neal A T, Zhu Z, Luo Z, Xu X, Tománek D, Ye P D 2014 ACS Nano 8 4033Google Scholar
[15] Khandelwal A, Mani K, Karigerasi M H, Lahiri I 2017 Mater. Sci. Eng. B 221 17Google Scholar
[16] Li L, Yu Y, Ye G J, Ge Q, Ou X, Wu H, Feng D, Chen X H, Zhang Y 2014 Nat. Nanotech. 9 372Google Scholar
[17] Fei R, Faghaninia A, Soklaski R, Yan J A, Lo C, Yang L 2014 Nano Lett. 14 6393Google Scholar
[18] Qiao J, Kong X, Hu Z X, Yang F, Ji W 2014 Nat. Commun. 5 4475Google Scholar
[19] Tran V, Soklaski R, Liang Y, Yang L 2014 Phys. Rev. B 89 235319Google Scholar
[20] Jiang J W, Park H S 2014 J. Phys. D:Appl. Phys. 47 385304Google Scholar
[21] Sha Z D, Pei Q X, Ding Z, Jiang J W, Zhang Y W 2015 J. Phys. D: Appl. Phys. 48 395303Google Scholar
[22] Sha Z D, Pei Q X, Zhang Y Y, Zhang Y W 2016 Nanotech. 27 315704Google Scholar
[23] Li L, Yang J 2017 Nanotech. 28 475701Google Scholar
[24] Qin G, Hu M 2018 Small 14 1702465Google Scholar
[25] Hong Y, Zhang J, Zeng X C 2018 Chin. Phys. B 27 036501Google Scholar
[26] Qin G, Yan Q B, Qin Z, Yue S Y, Hu M, Su G 2015 Phys. Chem. Chem. Phys. 17 4854Google Scholar
[27] Hong Y, Zhang J, Huang X, Zeng X C 2015 Nanoscale 7 18716Google Scholar
[28] Ong Z Y, Cai Y, Zhang G, Zhang Y W 2014 J. Phys. Chem. C 118 25272Google Scholar
[29] Zhang Y Y, Pei Q X, Jiang J W, Wei N, Zhang Y W 2016 Nanoscale 8 483Google Scholar
[30] Liu B, Bai L, Korznikova E A, Dmitriev S V, Law A W K, Zhou K 2017 J. Phys. Chem. C 121 13876Google Scholar
[31] Wei Q, Peng X 2014 Appl. Phys. Lett. 104 251915Google Scholar
[32] Yang Z, Zhao J, Wei N 2015 Appl. Phys. Lett. 107 023107Google Scholar
[33] Gamil M, Zeng Q H, Zhang Y Y 2020 Phys. Lett. A 384 126784Google Scholar
[34] Hatam-Lee S M, Peer-Mohammadi H, Rajabpour A 2021 Mater. Today Commun. 26 101796Google Scholar
[35] Mahnama M, Meshkinghalam M, Ozmaian M 2022 J. Phys.: Condens. Matter 34 075403Google Scholar
[36] Li T 2021 Physica E 131 114761Google Scholar
[37] Plimpton S 1995 J. Comput. Phys. 117 1Google Scholar
[38] Jiang J W 2015 Nanotech. 26 315706Google Scholar
[39] Kheirkhah A H, Iranizad E S, Raeisi M, Rajabpour A 2014 Solid State Commun. 177 98Google Scholar
[40] Zhang C, Hao X L, Wang C X, Wei N, Rabczuk T 2017 Sci. Rep. 7 41398Google Scholar
[41] Zhao J, Jiang J W, Rabczuk T 2013 Appl. Phys. Lett. 103 231913Google Scholar
[42] Li T, Tang Z, Huang Z, Yu J 2017 Physica E 85 137Google Scholar
[43] Xu K, Fan Z, Zhang J, Wei N, Ala-Nissila T 2018 Modell. Simul. Mater. Sci. Eng. 26 085001Google Scholar
[44] Smith B, Vermeersch B, Carrete J, Ou E, Kim J, Mingo N, Akinwande D, Shi L 2017 Adv. Mater. 29 1603756Google Scholar
[45] Hu M, Zhang X, Poulikakos D 2013 Phys. Rev. B 87 195417Google Scholar
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