Investigation of the stiffness change in, the indentation force and the hydrophobic recovery of plasma-oxidized polydimethylsiloxane surfaces by tapping mode atomic force microscopy
作者： G. Bar , L. Delineau , A. Häfele , M.-H. Whangbo
DOI: 10.1016/S0032-3861(00)00738-2
关键词:
摘要: Polydimethylsiloxane (PDMS) samples of different crosslink densities were oxidized in air plasma, and the stiffness change PDMS surface was monitored by performing tapping mode atomic force microscopy (TMAFM) distance-sweep measurements numerical simulations cantilever equation motion based on a contact mechanics model. The diffusion mechanism hydrophobic recovery an examined combined use TMAFM phase imaging experiments. Our work shows that modulus increases with increasing oxidation time, supports recovery. It is possible to extract information about indentation from observed curves employ for modulation experiments at high frequency.
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