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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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Publication details

The article was received on 28 Jul 2018, accepted on 29 Aug 2018 and first published on 29 Aug 2018


Article type: Communication
DOI: 10.1039/C8TB01959B
Citation: J. Mater. Chem. B, 2019, Advance Article
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    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, Advance Article , DOI: 10.1039/C8TB01959B

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