Buckling of Elastic Thin Films on Compliant Substrates for Determination of Surface Parameters

The buckling of an elastic thin film on a compliant substrate under small perturbation in normal deflection and tangential displacement is studied with the effect of surface energy and interracial slip. It is revealed that Poisson＇s ratio of the soft substrate and the interracial slip can be neglect...

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Bibliographic Details
Published inChinese physics letters Vol. 31; no. 11; pp. 123 - 125
Main Author 周雨农 黄干云
Format Journal Article
LanguageEnglish
Published 01.11.2014
Subjects
Buckling
Deflection
Film thickness
Modulus of elasticity
Slip
Substrates
Surface energy
Thin films
临界应变
切向位移
地表参数
基底
屈曲
弹性薄膜
柔性基板
表面参数
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Summary:The buckling of an elastic thin film on a compliant substrate under small perturbation in normal deflection and tangential displacement is studied with the effect of surface energy and interracial slip. It is revealed that Poisson＇s ratio of the soft substrate and the interracial slip can be neglected for film＇s thickness smaller than tens of nanometers. The effect of surface energy nevertheless renders the critical strain for the onset of wrinkling and the wave length dependent on the thickness highly nonlinearly. The potential of using buckling of thin films on compliant substrates for determination of surface parameters has been discussed.
Bibliography:11-1959/O4
The buckling of an elastic thin film on a compliant substrate under small perturbation in normal deflection and tangential displacement is studied with the effect of surface energy and interracial slip. It is revealed that Poisson＇s ratio of the soft substrate and the interracial slip can be neglected for film＇s thickness smaller than tens of nanometers. The effect of surface energy nevertheless renders the critical strain for the onset of wrinkling and the wave length dependent on the thickness highly nonlinearly. The potential of using buckling of thin films on compliant substrates for determination of surface parameters has been discussed.
ZHOU Yu-Nong, HUANG Gan-Yun（Department of Mechanics, Tianjin University, Tianjin 300072）
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/31/11/116202