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Immovable Rubber Ducks Demonstrate Highest-Performing Underwater Adhesive Hydrogel Polymer

HOKKAIDO UNIVERSITY, JAPAN, AUG 6 – The hydrogel achieves underwater adhesion exceeding 1 MPa, about 10 times stronger than typical materials, and remained effective on a rubber duck exposed to ocean conditions for over a year.

Summary by Phys.org
Hydrogels are a permeable soft material consisting of polymer networks and water with applications ranging from biomedical engineering to contact lenses. Intrinsic to hydrogels is the ability to endow diverse characteristics by modifying their polymer networks.

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A team at Hokkaido University has developed a gel-like material that can maintain extremely strong adhesive strength for a long period of time even when wet, using artificial intelligence (AI) to explore materials. When two materials are bonded together over a square meter, the material is so strong that it can withstand the weight of a dozen elephants hanging from it. This material can be used to repair water and sewer pipes that are frequently…

·Chiyoda, Japan
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The researchers analyzed thousands of natural protein sequences and obtained AI assistance in designing a new hydrogel adhesive that can remain sticky under water or even in a living body.The researchers tested a sticky hydrogel using it to paste a rubber duck on a rock in [...]

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Nature broke the news in United Kingdom on Wednesday, August 6, 2025.
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