The effect of torsional deformation on thermal conductivity of mono-, bi- and trilayer graphene nanoribbon

被引：10

作者：

Chellattoan, Ragesh ^{[1
]}

Sathian, Sarith P. ^{[1
]}

机构：

[1] Natl Inst Technol, Sch Nanosci & Technol, Calicut 673601, Kerala, India

来源：

SOLID STATE COMMUNICATIONS | 2013年 / 173卷

关键词：

Graphene; Molecular dynamics; Thermal conductivity; Phonon; PHONON-DISPERSION;

D O I：

10.1016/j.ssc.2013.08.027

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Physical deformation and geometrical change of a low dimensional nanostructure influence the phonon transport leading to appreciable changes in the thermal characteristics. In this paper, we report the calculation of the thermal conductivity of twisted graphene nanoribbon (GNR) using nonequilibrium molecular dynamics (NEMD). A reduction in the value of thermal conductivity of GNR is observed with an increase in the angle of twist. It is observed that the value of thermal conductivity of twisted GNR is dependent on the length of GNR and the temperature at which physical deformation is taking place. Comparing with monolayer GNR, the reduction in the thermal conductivity of bilayer and trilayer GNR is less due to the interactions between the adjacent layers. Analysis of the phonon transport in twisted graphene implies that the reduced thermal conductivity of twisted graphene nanoribbon is due to the phonon softening of acoustic phonon modes. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：1 / 4

页数：4

共 31 条

[1] Nanophononics: Phonon engineering in nanostructures and nanodevices [J].

Balandin, AA .

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2005, 5 (07) :1015-1022

[2] Superior thermal conductivity of single-layer graphene [J].

Balandin, Alexander A. ;

Ghosh, Suchismita ;

Bao, Wenzhong ;

Calizo, Irene ;

Teweldebrhan, Desalegne ;

Miao, Feng ;

Lau, Chun Ning .

NANO LETTERS, 2008, 8 (03) :902-907

[3] Thermal Transport in Suspended and Supported Monolayer Graphene Grown by Chemical Vapor Deposition [J].

Cai, Weiwei ;

Moore, Arden L. ;

Zhu, Yanwu ;

Li, Xuesong ;

Chen, Shanshan ;

Shi, Li ;

Ruoff, Rodney S. .

NANO LETTERS, 2010, 10 (05) :1645-1651

[4] Molecular dynamics simulation study on heat transport in monolayer graphene sheet with various geometries [J].

Cao, Ajing .

JOURNAL OF APPLIED PHYSICS, 2012, 111 (08)

[5] Biased bilayer graphene: Semiconductor with a gap tunable by the electric field effect [J].

Castro, Eduardo V. ;

Novoselov, K. S. ;

Morozov, S. V. ;

Peres, N. M. R. ;

Dos Santos, J. M. B. Lopes ;

Nilsson, Johan ;

Guinea, F. ;

Geim, A. K. ;

Castro Neto, A. H. .

PHYSICAL REVIEW LETTERS, 2007, 99 (21)

[6] The electronic properties of graphene [J].

Castro Neto, A. H. ;

Guinea, F. ;

Peres, N. M. R. ;

Novoselov, K. S. ;

Geim, A. K. .

REVIEWS OF MODERN PHYSICS, 2009, 81 (01) :109-162

[7] Symmetry constraints on phonon dispersion in graphene [J].

Falkovsky, L. A. .

PHYSICS LETTERS A, 2008, 372 (31) :5189-5192

[8] Extremely high thermal conductivity of graphene: Prospects for thermal management applications in nanoelectronic circuits [J].

Ghosh, S. ;

Calizo, I. ;

Teweldebrhan, D. ;

Pokatilov, E. P. ;

Nika, D. L. ;

Balandin, A. A. ;

Bao, W. ;

Miao, F. ;

Lau, C. N. .

APPLIED PHYSICS LETTERS, 2008, 92 (15)

[9] Generating quantizing pseudomagnetic fields by bending graphene ribbons [J].

Guinea, F. ;

Geim, A. K. ;

Katsnelson, M. I. ;

Novoselov, K. S. .

PHYSICAL REVIEW B, 2010, 81 (03)

[10] Thermal conductivity of graphene nanoribbons [J].

Guo, Zhixin ;

Zhang, Dier ;

Gong, Xin-Gao .

APPLIED PHYSICS LETTERS, 2009, 95 (16)

← 1 2 3 4 →