Rough surface adhesion in the presence of capillary condensation
作者： Frank W. DelRio , Martin L. Dunn , Leslie M. Phinney , Chris J. Bourdon , Maarten P. de Boer
DOI: 10.1063/1.2723658
关键词:
摘要: Capillary condensation of water can have a significant effect on rough surface adhesion. To explore this phenomenon between micromachined surfaces, the authors perform microcantilever experiments as function roughness and relative humidity (RH). Below threshold RH, adhesion is mainly due to van der Waals forces across extensive noncontacting areas. Above jumps capillary increases towards upper limit Γ=144mJ∕m2. A detailed model based measured topography qualitatively agrees with experimental data only when topographic correlations lower surfaces are considered.
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