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Title: Intrinsically reversible superglues via shape adaptation inspired by snail epiphragm

Abstract

Adhesives are ubiquitous in daily life and industrial applications. They usually fall into one of two classes: strong but irreversible (e.g., superglues) or reversible/reusable but weak (e.g., pressure-sensitive adhesives and biological and biomimetic surfaces). Achieving both superstrong adhesion and reversibility has been challenging. This task is particularly difficult for hydrogels that, because their major constituent is liquid water, typically do not adhere strongly to any material. Here, we report a snail epiphragm-inspired adhesion mechanism where a polymer gel system demonstrates superglue-like adhesion strength (up to 892 N⋅cm −2 ) that is also reversible. It is applicable to both flat and rough target surfaces. In its hydrated state, the softened gel conformally adapts to the target surface by low-energy deformation, which is locked upon drying as the elastic modulus is raised from hundreds of kilopascals to ∼2.3 GPa, analogous to the action of the epiphragm of snails. We show that in this system adhesion strength is based on the material’s intrinsic, especially near-surface, properties and not on any near-surface structure, providing reversibility and ease of scaling up for practical applications.

Authors:
; ; ORCiD logo; ; ; ; ORCiD logo; ORCiD logo
Publication Date:
Research Org.:
Lehigh Univ., Bethlehem, PA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1526768
Alternate Identifier(s):
OSTI ID: 1609917
Grant/Contract Number:  
FG02-07ER46463
Resource Type:
Published Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Volume: 116 Journal Issue: 28; Journal ID: ISSN 0027-8424
Publisher:
Proceedings of the National Academy of Sciences
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Science & Technology; polymer gels; superstrong adhesion; shape adaptation; intrinsically reversible; snail epiphragm

Citation Formats

Cho, Hyesung, Wu, Gaoxiang, Christopher Jolly, Jason, Fortoul, Nicole, He, Zhenping, Gao, Yuchong, Jagota, Anand, and Yang, Shu. Intrinsically reversible superglues via shape adaptation inspired by snail epiphragm. United States: N. p., 2019. Web. doi:10.1073/pnas.1818534116.
Cho, Hyesung, Wu, Gaoxiang, Christopher Jolly, Jason, Fortoul, Nicole, He, Zhenping, Gao, Yuchong, Jagota, Anand, & Yang, Shu. Intrinsically reversible superglues via shape adaptation inspired by snail epiphragm. United States. doi:10.1073/pnas.1818534116.
Cho, Hyesung, Wu, Gaoxiang, Christopher Jolly, Jason, Fortoul, Nicole, He, Zhenping, Gao, Yuchong, Jagota, Anand, and Yang, Shu. Mon . "Intrinsically reversible superglues via shape adaptation inspired by snail epiphragm". United States. doi:10.1073/pnas.1818534116.
@article{osti_1526768,
title = {Intrinsically reversible superglues via shape adaptation inspired by snail epiphragm},
author = {Cho, Hyesung and Wu, Gaoxiang and Christopher Jolly, Jason and Fortoul, Nicole and He, Zhenping and Gao, Yuchong and Jagota, Anand and Yang, Shu},
abstractNote = {Adhesives are ubiquitous in daily life and industrial applications. They usually fall into one of two classes: strong but irreversible (e.g., superglues) or reversible/reusable but weak (e.g., pressure-sensitive adhesives and biological and biomimetic surfaces). Achieving both superstrong adhesion and reversibility has been challenging. This task is particularly difficult for hydrogels that, because their major constituent is liquid water, typically do not adhere strongly to any material. Here, we report a snail epiphragm-inspired adhesion mechanism where a polymer gel system demonstrates superglue-like adhesion strength (up to 892 N⋅cm −2 ) that is also reversible. It is applicable to both flat and rough target surfaces. In its hydrated state, the softened gel conformally adapts to the target surface by low-energy deformation, which is locked upon drying as the elastic modulus is raised from hundreds of kilopascals to ∼2.3 GPa, analogous to the action of the epiphragm of snails. We show that in this system adhesion strength is based on the material’s intrinsic, especially near-surface, properties and not on any near-surface structure, providing reversibility and ease of scaling up for practical applications.},
doi = {10.1073/pnas.1818534116},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 28,
volume = 116,
place = {United States},
year = {2019},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1073/pnas.1818534116

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Cited by: 11 works
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