Issue 38, 2013
From the journal:

RSC Advances

Thermal management performance of bent graphenenanoribbons

Ping Yang,*a   Yunqing Tang,a   Haiying Yang,b   Jie Gong,a   Yu Liu,a   Yanfang Zhaoa  and  Xingang Yua  

* Corresponding authors

a Laboratory of Advanced Manufacturing & Reliability for MEMS/NEMS/OEDS, Jiangsu University, Zhenjiang 212013, China
E-mail: yangpingdm@ujs.edu.cn
Tel: +86 511-88790779

b School of Material Science & Engineering, Jiangsu University, Zhenjiang 212013, China

Abstract

The models of graphene nanoribbons (GNRs) with angles 0°, 30°, 60°, 90° and 120° were constructed to investigate the thermal conduction by using the reverse non-equilibrium molecular dynamics method. A substantially negative correlation between the thermal conductivity and the bent angle shows a nonlinear decline from 0° to 90°. It also shows that there is a little increase from 90° to 120° due to the edge effect. To weaken the edge effect, the nitrogen doping method is adopted to recompose the bent GNRs. The results show that it is effective for the thermal management, and a strict monotonous relationship between the thermal conductivity and bent angle can be obtained. In the meantime, an interesting phenomenon is observed that the GNRs with edge modification by N-doping can get a much better thermal conduction than original GNRs without edge modification. We can understand the physical mechanism by phonon analysis for these GNRs. The investigation implies that we can change the thermal conductivity of GNRs by design by N-doping.

Graphical abstract: Thermal management performance of bent graphene nanoribbons

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Article information

DOI
https://doi.org/10.1039/C3RA41869C
Article type
Paper
Submitted
17 Apr 2013
Accepted
23 Jul 2013
First published
24 Jul 2013

RSC Adv., 2013,3, 17349-17354

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Thermal management performance of bent graphene nanoribbons

P. Yang, Y. Tang, H. Yang, J. Gong, Y. Liu, Y. Zhao and X. Yu, RSC Adv., 2013, 3, 17349 DOI: 10.1039/C3RA41869C

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