Thermal Conductivity of Graphene Nanoribbons with Regular Isotopic Modification

2014 ◽  
Vol 11 (2) ◽  
pp. 348-352 ◽  
Author(s):  
Chenyang Li ◽  
Ling Miao ◽  
Xiaojian Tan ◽  
Mengdi Han ◽  
Jianjun Jiang
Keyword(s):  
Thermal Conductivity ◽  
Graphene Nanoribbons ◽  
Isotopic Modification

Thermal conductivity of sawtooth-like graphene nanoribbons: A molecular dynamics study

2012 ◽  
Vol 112 (12) ◽  
pp. 123508 ◽  
Author(s):  
Hui-Sheng Zhang ◽  
Zhi-Xin Guo ◽  
Xin-Gao Gong ◽  
Jue-Xian Cao
Keyword(s):  
Thermal Conductivity ◽  
Molecular Dynamics ◽  
Graphene Nanoribbons

Influence of doped nitrogen and vacancy defects on the thermal conductivity of graphene nanoribbons

2013 ◽  
Vol 19 (11) ◽  
pp. 4781-4788 ◽  
Author(s):  
Haiying Yang ◽  
Yunqing Tang ◽  
Jie Gong ◽  
Yu Liu ◽  
Xiaoliang Wang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Graphene Nanoribbons ◽  
Vacancy Defects

scholarly journals Impact of vacancies on the thermal conductivity of graphene nanoribbons: A molecular dynamics simulation study

AIP Advances ◽  
2017 ◽  
Vol 7 (1) ◽  
pp. 015112 ◽  
Author(s):  
Maliha Noshin ◽  
Asir Intisar Khan ◽  
Ishtiaque Ahmed Navid ◽  
H. M. Ahsan Uddin ◽  
Samia Subrina
Keyword(s):  
Thermal Conductivity ◽  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Simulation Study ◽  
Graphene Nanoribbons ◽  
Dynamics Simulation

Role of Edge Chirality and Isotope Doping in Thermal Transport and Thermal Rectification in Graphene Nanoribbons

2011 ◽  
Author(s):  
Yan Wang ◽  
Xiulin Ruan
Keyword(s):  
Thermal Conductivity ◽  
Thermal Transport ◽  
Graphene Nanoribbons ◽  
Mass Density ◽  
Transport Processes ◽  
Phonon Modes ◽  
Cross Sectional ◽  
Thermal Rectification ◽  
The Difference ◽  
Dynamics Simulations

Thermal transport processes in graphene nanoribbons (GNRs) within and beyond the linear response regime has been studied using classical molecular dynamics simulations. Zigzag-edged GNRs have higher thermal conductivities than armchair-edged ones, and the difference diminishes with increasing width. Analysis on the cross-sectional distribution of heat flux reveals that edge atoms cannot transport thermal energy as efficiently as interior ones. Edge localization of phonon modes reduces thermal transport through edge carbon atoms, especially on armchair edges, which results in a lower thermal conductivity. Isotope (13C) doping can reduce the thermal conductivity of GNRs by 30%–40% by an addition of only ∼20% isotope atoms. The significant reduction in thermal conductivity is partially attributed to phonon localization induced by isotope defects, which is confirmed by phonon mode participation ratio analysis. We also demonstrate that a GNR asymmetric in edge chirality or mass density can generate considerable thermal rectification, which is essential for developing GNR-based thermal management devices.

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