Multiphoton photoreduction for dual-wavelength-light-driven shrinkage and actuation in hydrogel
Multiphoton photoreduction for dual-wavelength-light-driven shrinkage and actuation in hydrogel
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DOI：
10.1364/ome.399874
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发表时间：
2020-08
影响因子：
2.8
通讯作者：
Kosuke Mizuguchi;Y. Nagano;Hiroaki Nishiyama;H. Onoe;M. Terakawa
中科院分区：
文献类型：
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作者：
Kosuke Mizuguchi;Y. Nagano;Hiroaki Nishiyama;H. Onoe;M. Terakawa
通过多光子光还原在水凝胶中制备多金属微结构，证明了双波长驱动的金属微结构收缩和水凝胶驱动。在聚-N-异丙基丙烯酰胺（PNIPAm）水凝胶中制备了银和金的微结构。由于金属的不同的光学共振，金属微结构的波长依赖性收缩被证明与支持水凝胶的体积变化同时通过光刺激。此外，通过切换光刺激的波长来控制水凝胶的致动方向。结果表明，多光子光还原在光驱动光学元件和软材料微机器人制造的应用潜力。
The dual-wavelength-driven shrinkage of metal microstructures and hydrogel actuation are demonstrated by the fabrication of multi-metal microstructures in hydrogels by multiphoton photoreduction. Silver and gold microstructures were fabricated in a poly-N-isopropylacrylamide (PNIPAm) hydrogel. Because of the different optical resonances of the metals, wavelength-dependent shrinkage of metal microstructures was demonstrated concurrently with the volume change of the supporting hydrogel by light stimulation. Furthermore, the direction of actuation of the hydrogel was controlled by switching the wavelength of light stimulation. The results indicate the potential of multiphoton photoreduction for applications in light-driven optical components and micro-robots fabricated with soft materials.