Journal ArticleDOI
Solution of Time Dependent Joule Heat Equation for a Graphene Sheet Under Thomson Effect
Reads0
Chats0
TLDR
In this article, a physics-based solution of the joule heating phenomenon in a single-layer graphene (SLG) sheet under the presence of Thomson effect is presented. And the authors demonstrate that the temperature in an isotopically pure (containing only C12) SLG sheet attains its saturation level quicker than when doped with its isotopes (C13), and further develop an analytical model of the SLG specific heat using the quadratic (out of plane) phonon band structure over the room temperature.Abstract:
We address a physics-based solution of joule heating phenomenon in a single-layer graphene (SLG) sheet under the presence of Thomson effect. We demonstrate that the temperature in an isotopically pure (containing only C12) SLG sheet attains its saturation level quicker than when doped with its isotopes (C13). From the solution of the joule heating equation, we find that the thermal time constant of the SLG sheet is in the order of tenths of a nanosecond for SLG dimensions of a few micrometers. These results have been formulated using the electron interactions with the inplane and flexural phonons to demonstrate a field-dependent Landauer transmission coefficient. We further develop an analytical model of the SLG specific heat using the quadratic (out of plane) phonon band structure over the room temperature. Additionally, we show that a cooling effect in the SLG sheet can be substantially enhanced with the addition of C13. The methodologies as discussed in this paper can be put forward to analyze the graphene heat spreader theory.read more
Citations
More filters
Journal ArticleDOI
Modeling and Analysis on Overall Fatigue Failure Evolution of Press-Pack IGBT Device
TL;DR: In this article, a multiphysics coupling model of a single-chip 3.3-kV/50-A PP-IGBT device is presented to analyze the fretting wear failure, and the weak layer and the fatigue effect are obtained by power cycling simulation.
Proceedings ArticleDOI
Thermal Transport in Graphene Supported on Copper
Liang Chen,Satish Kumar +1 more
TL;DR: In this paper, the authors investigated the thermal transport in suspended graphene and graphene supported on copper substrate using equilibrium molecular dynamics simulations, Green-Kubo method and relaxation time approximation (RTA) approach.
Journal ArticleDOI
Impact of Stone-Wales and lattice vacancy defects on the electro-thermal transport of the free standing structure of metallic ZGNR
TL;DR: In this paper, the effect of topological and lattice vacancy defects on the electro-thermal transport properties of the metallic zigzag graphene nano ribbons at their ballistic limit was investigated.
Proceedings ArticleDOI
Electro-thermal Stress Comparison between Full Pressure and Silver Sintered Package Press Pack IGBT
TL;DR: In this article, the reliability difference of different package IGBT, the electro-thermal stress of full pressure and silver sintered package Press Pack IGBT (PP IGBT) are compared by using Finite Element Method (FEM).
References
More filters
Journal ArticleDOI
Physics-Based Solution for Electrical Resistance of Graphene Under Self-Heating Effect
TL;DR: In this article, a physics-based solution for the temperature-dependent electrical resistance of a suspended metallic single-layer graphene (SLG) sheet under Joule self-heating is presented.
Related Papers (5)
Flexural phonons and thermal transport in multilayer graphene and graphite
Molecular dynamics simulations of thermal conductivity and spectral phonon relaxation time in suspended and supported graphene
Bo Qiu,Xiulin Ruan +1 more