应用色散力原理研究高分子薄膜的去湿润现象(英文)  

Application of the Theory of Dispersion Forces to the Dewetting of Polymer Films

作　　者：吴利华[1] 赵鹤平[1] 

机构地区：[1]吉首大学物理科学与信息工程学院,湖南吉首416000

出　　处：《吉首大学学报（自然科学版）》2010年第2期55-59,共5页Journal of Jishou University(Natural Sciences Edition)

基　　金：Supported by the NSF of Hunan Province(09JJ6011);Scientific Research Fundation of Hunan Provincial Education Depart ment(08A055)

摘　　要：应用Dzyaloshinskii,Lifshitz,和Pitaevskii(DLP)理论研究了"空气/高分子薄膜/SiO2/Si"体系中色散力对薄膜表面去湿润的影响,计算了自由能的二阶导数、波长和生长率.研究结果表明:覆盖层可以改变基底的湿润性,延迟效应在某些情况下起着很重要的作用,在研究去湿润引起的高分子薄膜不稳定时必须考虑延迟效应.The theory of Dzyaloshinskii,Lifshitz,and Pitaevskii(DLP) is applied to investigate the effects of dispersion forces in the dewetting of polymer films in the system of air,polymer,silicon oxide and silicon.The second derivate of the free energy,wavelength and growth rate are calculated.The results show that the coating can modulate the wettability of its substrate and the retarded effects can be significant sometimes.They should be taken into account to deal with the dewetting instability of the polymer fil...

关 键 词：色散力 去湿润 延迟效应 波长 生长率 

分 类 号：O484[理学—固体物理]