Strongly Modulated Friction of a Film-Terminated Ridge-Channel Structure.

ABSTRACT: Natural contacting surfaces have remarkable surface mechanical properties, which has led to the development of bioinspired surface structures using rubbery materials with strongly enhanced adhesion and static friction. However, sliding friction of structured rubbery surfaces is almost always significantly lower than that of a flat control, often due to significant loss of contact. Here we show that a film-terminated ridge-channel structure can strongly enhance sliding friction. We show that with properly chosen materials and geometrical parameters the near surface structure undergoes mechanical instabilities along with complex folding and sliding of internal interfaces, which is responsible for the enhancement of sliding friction. Because this structure shows no enhancement of adhesion und

SUBMITTER: He Z 

PROVIDER: S-EPMC4881016 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature