%0 Journal Article
%T Stability of lubricant perfluoropolyether films<br>润滑膜全氟聚醚的稳定性
%A Li Xin
%A Hu Yuan-Zhong
%A Wang Hui
%A Chen Hui
%A <br>李欣
%A 胡元中
%A 王慧
%A 陈辉
%J 物理学报
%D 2007
%I 
%X Molecular dynamics simulations based on a coarse-grained, bead-spring model are adopted to investigate the stability of both nonfunctional and functional perfluoropolyether (PFPE) on solid substrates. For nonfunctional PFPE, the surface morphology changes little with time. The film is stable. For functional PFPE, part of lubricant molecules show local dewetting which causes the increase of surface roughness with time. The film is unstable. Besides, the changes in surface morphology with different endbeads are compared, which indicate that the endbead-endbead interaction is the principal reason for the film instability and the endbead-substrate interaction has little effect on the film stability.
%K perfluoropolyether films
%K molecular dynamics simulation
%K stability<br>全氟聚醚膜
%K 分子动力学模拟
%K 稳定性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=E9ABB5A0089DF807&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=DF92D298D3FF1E6E&sid=A8F2E071361CEB67&eid=B2922CA25A094C37&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=9