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Novel hydrogel actuator inspired by reversible mussel adhesive protein chemistry
1Department of Biomedical Engineering, Michigan Technological University, Houghton, MI, 49931, USA.
Abstract:
A novel hydrogel actuator that combines ionoprinting techniques with reversible catechol-metal ion coordination chemistry found in mussel adhesive proteins is developed. Deposited metal ions increase the local crosslinking density, which induces sharp bending of the hydrogel. Reversibly bound metal ions can be removed and reintroduced in a different pattern so that the hydrogel can be reprogrammed to transform into a different 3-dimentional shape.
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