Surface-tension-induced flattening of a nearly plane elastic solid
Surface-tension-induced flattening of a nearly plane elastic solid
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DOI：
10.1103/physreve.85.051602
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发表时间：
2012-05-11
影响因子：
2.4
通讯作者：
Ghatak, Animangsu
中科院分区：
文献类型：
--
作者：
Jagota, Anand;Paretkar, Dadhichi;Ghatak, Animangsu
我们报告了软固体由于表面张力而导致的表面变形的直接测量。发现具有波纹表面的聚(二甲基硅氧烷)母模的凝胶复制品的振幅随着凝胶模量的降低而降低。当薄弹性体薄膜因短暂暴露于氧等离子体而被氧化时，其表面起伏会减弱。两种情况下的表面变形都成功地建模为由表面张力驱动并由弹性抵抗。我们的结果表明，软固体的表面张力会导致显着的变形，并且后者可以用来确定前者。
We report direct measurement of surface deformation in soft solids due to their surface tension. Gel replicas of poly(dimethysiloxane) masters with rippled surfaces are found to have amplitudes that decrease with decreasing gel modulus. Surface undulations of a thin elastomeric film are attenuated when it is oxidized by brief exposure to oxygen plasma. Surface deformation in both cases is modeled successfully as driven by surface tension and resisted by elasticity. Our results show that surface tension of soft solids drives significant deformation, and that the latter can be used to determine the former.