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Issue 10, 2019
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A shape-shifting composite hydrogel sheet with spatially patterned plasmonic nanoparticles

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Abstract

We report a simple and reliable approach to fabricate composite hydrogel sheets with spatially patterned regions of plasmonic gold nanoparticles using a combination of contact printing and diffusion-controlled galvanic replacement reaction. In response to near-infrared laser irradiation, the localized increase in temperature induced the controlled shape deformation of the composite hydrogels, due to the combined effect of photothermal heating of the loaded gold nanoparticles and the thermal responsiveness of the hydrogel matrix. The same hydrogel can be designed to exhibit different modes of shape deformation depending on the direction of light irradiation, which has rarely been reported previously. The composite hydrogels may find applications in biomedicine and soft robots.

Graphical abstract: A shape-shifting composite hydrogel sheet with spatially patterned plasmonic nanoparticles

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Supplementary files

Article information


Submitted
28 Jul 2018
Accepted
29 Aug 2018
First published
29 Aug 2018

J. Mater. Chem. B, 2019,7, 1679-1683
Article type
Communication
Author version available

A shape-shifting composite hydrogel sheet with spatially patterned plasmonic nanoparticles

H. Guo, Y. Liu, Y. Yang, G. Wu, K. Demella, S. R. Raghavan and Z. Nie, J. Mater. Chem. B, 2019, 7, 1679
DOI: 10.1039/C8TB01959B

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