Literature DB >> 17327201

Shearing of fibrillar adhesive microstructure: friction and shear-related changes in pull-off force.

M Varenberg1, S Gorb.   

Abstract

To characterize the effect of shearing on function of fibrillar adhesive microstructure, friction and shear-related changes in pull-off force of a biomimetic polyvinylsiloxane mushroom-shaped fibrillar adhesive microstructure were studied. In contrast to a control flat surface, which exhibited pronounced stick-slip motion accompanied with high friction, the fibrillar microstructure demonstrated a stable and smooth sliding with a friction coefficient approximately four times lower. The structured contact also manifested zero pull-off force in a sheared state, while the flat surface exhibited highly scattered and unreliable pull-off force when affected by contact shearing. It appears that the fibrillar microstructure can be used in applications where a total attachment force should be generated in a binary on/off state and, most surprisingly, is suitable to stabilize and minimize elastomer friction.

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Year:  2007        PMID： 17327201      PMCID： PMC2373395          DOI： 10.1098/rsif.2007.0222

Source DB:  PubMed          Journal:  J R Soc Interface        ISSN： 1742-5662            Impact factor:   4.118


  11 in total

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  25 in total

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