Abstract
We study the influence of surface roughness on the adhesion of elastic solids. Most real surfaces have roughness on many different length scales, and this fact is taken into account in our analysis. We consider in detail the case when the surface roughness can be described as a self-affine fractal, and show that when the fractal dimension Df>2.5, the adhesion force may vanish, or be at least strongly reduced. We consider the block-substrate pull-off force as a function of roughness, and find a partial detachment transition preceding a full detachment one. The theory is in good qualitative agreement with experimental data.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 10:16 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 6, 2024, 5:24 a.m.) |
Indexed | 4 weeks ago (Aug. 6, 2025, 8:34 a.m.) |
Issued | 23 years, 11 months ago (Sept. 22, 2001) |
Published | 23 years, 11 months ago (Sept. 22, 2001) |
Published Print | 23 years, 11 months ago (Sept. 22, 2001) |
@article{Persson_2001, title={The effect of surface roughness on the adhesion of elastic solids}, volume={115}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1398300}, DOI={10.1063/1.1398300}, number={12}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Persson, B. N. J. and Tosatti, E.}, year={2001}, month=sep, pages={5597–5610} }