Effect of backing layer thickness on adhesion of single-level elastomer fiber arrays

Seok Kim; Metin Sitti; Chung Yuen Hui; Rong Long; Anand Jagota

doi:10.1063/1.2801371

Effect of backing layer thickness on adhesion of single-level elastomer fiber arrays

Seok Kim, Metin Sitti, Chung Yuen Hui, Rong Long, Anand Jagota

Research output: Contribution to journal › Article

Abstract

The effect of the backing layer thickness on adhesion was investigated for single-level elastomer fibrillar adhesives. Polyurethane microfiber arrays with spatulated tips on a 160 μm thick backing layer show nine times greater adhesion strength (around 22 N cm2) than those with a 1120 μm thick backing. A theoretical model is proposed to explain this difference in which very thin backing layers promote equal load sharing, maximizing adhesion, while very thick backings can lead to reduced adhesion due to edge stress concentration. Therefore, backing layer thickness should be considered as a significant parameter for design of high performance fibrillar adhesives.

Original language	English (US)
Article number	161905
Journal	Applied Physics Letters
Volume	91
Issue number	16
DOIs	https://doi.org/10.1063/1.2801371
State	Published - Oct 31 2007
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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Kim, S., Sitti, M., Hui, C. Y., Long, R., & Jagota, A. (2007). Effect of backing layer thickness on adhesion of single-level elastomer fiber arrays. Applied Physics Letters, 91(16), [161905]. https://doi.org/10.1063/1.2801371

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