[12p-B410-1~16] 3.7 Laser processing

△ [12p-B410-11] Light-Driven Size Change of Microchannel inside Hydrogel by Using Multi-Photon Photoreduction

〇Yo Nagano¹, Kosuke Mizuguchi², Hiroaki Onoe^1,2, Mitsuhiro Terakawa^1,2 (1.Keio Univ., 2.Grad. Sch. Keio Univ.)

Keywords:direct laser writing, hydrogel, actuation

Controlling the flow rate of the microchannel would allow for the change of shear stress to inner wall, providing better model of an internal environment of a living body, as well as the evaluation of cell migration at different flow rates, etc. In this study, we locally fabricated a gold microstructure adjacent to a microchannel inside a temperature-responsive hydrogel using multi-photon photoreduction. By irradiating light to the gold microstructure, which acted as a light absorber, the radius of the elliptical microchannel showed significant change.