Intrinsically reversible superglues via shape adaptation inspired by snail epiphragm
[2];
[3];
[2]
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104,, Materials and Life Science Research Division, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea,
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104,
- Department of Chemical &, Biomolecular Engineering, Lehigh University, Bethlehem, PA 18105,, Department of Bioengineering, Lehigh University, Bethlehem, PA 18105
Significance Achieving both superstrong adhesion and reversibility is challenging, particularly for hydrogels. Here, we report a hydrogel-based, reversible, superglue-like adhesive by combining the benefits of both liquid and dry adhesives in a single material while overcoming their respective limitations. When hydrated, the softened gel conformally adapts to the target surface by low-energy deformation, which is then locked upon drying as the elastic modulus is raised from hundreds of kilopascals to a few gigapascals, analogous to the action of the epiphragm of snails. We show that reversible superstrong adhesion could be achieved from a nonstructured material when the criterion of shape adaption is met, with minimal residual strain energy stored in the system.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- FG02-07ER46463
- OSTI ID:
- 1526768
- Alternate ID(s):
- OSTI ID: 1609917
- Journal Information:
- Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 28 Vol. 116; ISSN 0027-8424
- Publisher:
- Proceedings of the National Academy of SciencesCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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