Open AccessMolecular dynamics simulation on the out-of plane thermal conductivity of argon crystal thin films
Author(s) -
Wu Guo-Qiang,
Xiangbin Kong,
Sun Zhao-Wei,
Wang Ya-Hui
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.1
Subject(s) - thermal conductivity , materials science , molecular dynamics , argon , crystal (programming language) , dielectric , thin film , conductivity , range (aeronautics) , condensed matter physics , composite material , nanotechnology , atomic physics , chemistry , optoelectronics , physics , computational chemistry , computer science , programming language
Part of results of research on satellite heat control under the Harvest Project of the National 973 Program is reported.In accordance with the “minimized nucleus” requirement of the satellite,the thermal conductivity of the dielectric FCC argon-crystal nano-film in the normal direction is predicted using the equilibrium molecular dynamic (EMD) and non-equilibrium molecular dynamic (NEMD) methods. The calculated results are compared with the experimental value of the bulk cryastal.Our calculation shows that the thermal conductivity of the thin films is much lower than that of its bulk conterpart,and the size-effect is significant;it increses nearly linearly with increasing thickness in the thickness range of 2.124—5.310nm.