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Topological adhesion II. Stretchable adhesion

Yang, Jiawei and Steck, Jason and Bai, Ruobing and Suo, Zhigang (2020) Topological adhesion II. Stretchable adhesion. Extreme Mechanics Letters, 40 . Art. No. 100891. ISSN 2352-4316.

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When two stretchable materials (e.g., hydrogels, elastomers, and biological tissues) are adhered, the interface should be stretchable, without constraining the deformation and degrading adhesion. Here we develop methods to characterize stretchable adhesion. We do so by topological adhesion, using polyacrylamide hydrogels as adherends, chitosan as stitch polymers, and a change in the pH as a trigger. We prestretch the topohered hydrogels in several ways, and measure adhesion energy when the hydrogels are either in the un-stretched or the stretched state. Stretchable adhesion is achieved when the adhesion energy can maintain a similar level, insensitive to the prestretch. We study the mechanism of stretchable adhesion formed by the chitosan topohesive.

Item Type:Article
Related URLs:
URLURL TypeDescription
Bai, Ruobing0000-0002-5847-0502
Suo, Zhigang0000-0002-4068-4844
Additional Information:© 2020 Published by Elsevier Ltd. Received 22 June 2020, Revised 15 July 2020, Accepted 15 July 2020, Available online 22 July 2020.
Funding AgencyGrant Number
NSF Graduate Research FellowshipDGE-1745303
Subject Keywords:Topological adhesion; Chitosan; pH; Stretchable interface; Adhesion energy
Record Number:CaltechAUTHORS:20200722-102503254
Persistent URL:
Official Citation:Jiawei Yang, Jason Steck, Ruobing Bai, Zhigang Suo, Topological adhesion II. Stretchable adhesion, Extreme Mechanics Letters, Volume 40, 2020, 100891, ISSN 2352-4316, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104504
Deposited By: Tony Diaz
Deposited On:22 Jul 2020 18:46
Last Modified:19 Nov 2020 00:16

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