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In situ observation of contact mechanisms in bioinspired adhesives at high magnification

Published online by Cambridge University Press:  10 October 2011

Dadhichi Paretkar ,
Andreas S. Schneider ,
Elmar Kroner  and
Eduard Arzt
Dadhichi Paretkar
Affiliation:
INM-Leibniz Institute for New Materials and Saarland University, Saarbrücken, Saarland, Germany
Andreas S. Schneider
Affiliation:
INM-Leibniz Institute for New Materials and Saarland University, Saarbrücken, Saarland, Germany
Elmar Kroner
Affiliation:
INM-Leibniz Institute for New Materials and Saarland University, Saarbrücken, Saarland, Germany
Eduard Arzt*
Affiliation:
INM-Leibniz Institute for New Materials and Saarland University, Saarbrücken, Saarland, Germany
*
Address all correspondence to Eduard Arzt at[email protected]
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Abstract

We analyzed the contact mechanisms of bioinspired microfibrillar adhesives using in situ scanning electron microscopy. During adhesion tests we observed that (i) the superior adhesion of mushroom-shaped fibrils is assisted by the stochastic nature of detachment, (ii) the aspect ratio of microfibrils influences the bending/buckling behavior and the contact reformation, and (iii) the backing layer deformation causes the microfibrils to elastically interact with each other. These studies give new insights into the mechanisms responsible for adhesion of bioinspired fibrillar adhesives.

Type
Rapid Communications
Information
MRS Communications , Volume 1 , Issue 1 , November 2011 , pp. 53 - 56
Copyright
Copyright © Materials Research Society 2011

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