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Issue 5, 2013
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Fabrication and analysis of enforced dry adhesives with core–shell micropillars

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Abstract

We present a simple method for fabricating robust dry adhesives by coating a soft polydimethyl siloxane (PDMS) thin layer on rigid backbone micropillars of polyurethane acrylate (PUA). These core–shell type micropillars demonstrated enhanced durability both in normal and shear adhesion over more than 100 cycles of attachment and detachment. Relatively strong normal (∼11.4 N cm−2) and shear (∼15.3 N cm−2) adhesion forces were observed, which were similar to or even larger than those of homogeneous PDMS micropillars. A simple theoretical model based on beam deflection theory was used to explain the experimental results.

Graphical abstract: Fabrication and analysis of enforced dry adhesives with core–shell micropillars

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Supplementary files

Article information


Submitted
09 Oct 2012
Accepted
15 Nov 2012
First published
29 Nov 2012

Soft Matter, 2013,9, 1422-1427
Article type
Communication

Fabrication and analysis of enforced dry adhesives with core–shell micropillars

W. Bae, M. K. Kwak, H. E. Jeong, C. Pang, H. Jeong and K. Suh, Soft Matter, 2013, 9, 1422
DOI: 10.1039/C2SM27323C

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