Presentation Information
[21p-P15-5]Controlling transmittance of the thermosensitive hydrogel using gold microstructures fabricated with high-speed scanning of femtosecond laser pulses
〇Ken Kashikawa1, Hirofumi Tomikawa1, Hiroaki Onoe1,2, Mitsuhiro Terakawa1,2 (1.Grad. Sch. Keio Univ., 2.Keio Univ.)
Keywords:
multiphoton photoreduction,hydrogel,high-speed scanning
Multiphoton photoreduction using femtosecond laser pulses can spatially fabricate metal microstructures in temperature-responsive hydrogels. However, temperature-responsive hydrogels are thermally affected by the irradiation of femtosecond laser pulses at high repetition rates during the structure fabrication process which induce an undesirable volume phase transition, resulting in the hindrance of fabricating the arbitrarily designed structures. We demonstrated the direct fabrication of gold microstructures in temperature-responsive hydrogels with high-speed scanning of femtosecond laser pulses using a galvanometer scanner, and transmittance control by light stimulation was performed using the temperature-responsive hydrogel with the fabricated gold microstructure. we compare the hydrogel’s transmittance change at the structure fabricated with each scanning speed and number of scans during the structure fabrication process.