Adhesive contact of rough brushes

Clicks: 69
ID: 89374
2018
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Ranked #42 of 44 articles by views in beilstein journal of nanotechnology

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Abstract
The adhesive contact between a rough brush-like structure and an elastic half-space is numerically simulated using the fast Fourier transform (FFT)-based boundary element method and the mesh-dependent detachment criterion of Pohrt and Popov. The problem is of interest in light of the discussion of the role of contact splitting in the adhesion strength of gecko feet and structured biomimetic materials. For rigid brushes, the contact splitting does not enhance adhesion even if all pillars of the brush are positioned at the same height. Introducing statistical scatter of height leads to a further decrease of the maximum adhesive strength. At the same time, the pull-off force becomes dependent on the previously applied compression force and disappears completely at some critical roughness. For roughness with a subcritical value, the pressure dependence of the pull-off force qualitatively follows the known theory of Fuller and Tabor with moderate modification due to finite size effect of the brush.
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li2018adhesivebeilstein Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Li, Qiang;Popov, Valentin L.;
Journal beilstein journal of nanotechnology
Year 2018
DOI
DOI not found
URL
https://doi.org/10.3762/bjnano.9.225
Keywords
chemistry Chemical technology Technology Electrical engineering. Electronics. Nuclear engineering Mechanical engineering and machinery Science physics

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