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Issue 12, 2017
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Cavity shape transformation during peeling on elastic microchannel-patterned substrates filled with a viscous liquid

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Abstract

Inspired by the detachment mechanics of natural adhesive pads, we studied the change in cavity shape during peel tests on a 10% cross-linked polydimethylsiloxane (PDMS) elastic microchannel filled with 1% cross-linked viscous PDMS liquid (patterned bilayer). During peeling, we explored cavity shape as a function of microchannel dimensions and correlated the dimensionless cavity shape factor (CSF) and characteristic stress decay length, K−1. The peel test on the liquid-filled elastic microchannel shows three distinct cavity-shape regimes, elliptical, circular, and binary, based on the values of CSF and K−1. Such cavity formation and shape regimes could be important for improving the design of pressure-sensitive adhesives.

Graphical abstract: Cavity shape transformation during peeling on elastic microchannel-patterned substrates filled with a viscous liquid

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Publication details

The article was received on 03 Jan 2017, accepted on 25 Feb 2017, published on 10 Mar 2017 and first published online on 10 Mar 2017


Article type: Paper
DOI: 10.1039/C7SM00016B
Citation: Soft Matter, 2017,13, 2394-2401
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    Cavity shape transformation during peeling on elastic microchannel-patterned substrates filled with a viscous liquid

    N. Chaudhari, T. Deshpande, Y. R. G. Singh, S. Patil, M. Kulkarni, J. Raut and A. Sharma, Soft Matter, 2017, 13, 2394
    DOI: 10.1039/C7SM00016B

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