publication . Other literature type . Article . 2012

Effect of nano- and micro-roughness on adhesion of bioinspired micropatterned surfaces.

Canas, N.; Kamperman, M.M.G.; Volker, B.; Kroner, E.; McMeeking, R.M.; Arzt, E.;
  • Published: 01 Jan 2012
  • Publisher: Elsevier BV
  • Country: Netherlands
In this work, the adhesion of biomimetic polydimethylsiloxane (PDMS) pillar arrays with mushroom-shaped tips was studied on nano- and micro-rough surfaces and compared to unpatterned controls. The adhesion strength on nano-rough surfaces invariably decreased with increasing roughness, but pillar arrays retained higher adhesion strengths than unpatterned controls in all cases. The results were analyzed with a model that focuses on the effect on adhesion of depressions in a rough surface. The model fits the data very well, suggesting that the pull-off strength for patterned PDMS is controlled by the deepest dimple-like feature on the rough surface. The lower pull-...
Medical Subject Headings: technology, industry, and agriculture
free text keywords: Biotechnology, Biochemistry, Molecular Biology, Biomaterials, Biomedical Engineering, General Medicine, Nano-, Adhesion strength, Nanotechnology, Adhesion, Surface finish, Composite material, Surface roughness, Micro roughness, Materials science, Polydimethylsiloxane, chemistry.chemical_compound, chemistry, Asperity (materials science), fibrillar surfaces, biological-systems, elastic solids, contact, shape, mechanics, force
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