Influence of surface roughness on thermal properties of single crystalline Ge thin films

The shape, height, and length of the surface roughness have an appreciable influence on the in-plane and cross-plane thermal conductivity of single crystalline Ge thin films. [Display omitted] We use non-equilibrium molecular dynamics (NEMD) simulations to compute thermal conductivity of Ge thin fil...

Full description

Saved in:
Bibliographic Details
Published in:Computational materials science 2016-10, Vol.123, p.40-43
Main Authors: Zhang, Xingli, Wu, Xiande
Format: Article
Language:English
Subjects:
Crystal structure
Ge thin films
Heat transfer
Molecular dynamics
Non-equilibrium molecular dynamics
Roughness
Surface roughness
Thermal conductivity
Thermal properties
Thin films
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The shape, height, and length of the surface roughness have an appreciable influence on the in-plane and cross-plane thermal conductivity of single crystalline Ge thin films. [Display omitted] We use non-equilibrium molecular dynamics (NEMD) simulations to compute thermal conductivity of Ge thin films with rough surface. The analysis shows that the shape, height, and length of the surface roughness have an appreciable influence on the in-plane and cross-plane thermal conductivity of Ge thin films. The thermal conductivity significantly decreases with increasing the period height of roughness or with decreasing the period length of roughness. Phonon-boundary scattering mechanism could be used to explain our results.
ISSN:0927-0256
1879-0801
DOI:10.1016/j.commatsci.2016.06.001