[11p-N321-1~8] 3.7 Laser processing

△ [11p-N321-2] Mechanical strength change of double-network hydrogel fabricated by multi-photon cross linking

〇Kaneto Tsunemitsu¹, Akira Watanabe², Hiroaki Onoe^1,3, Mitsuhiro Terakawa^1,3 (1.Grad. Sch. Keio Univ., 2.Tohoku Univ., 3.Keio Univ.)

Keywords:Femtosecond laser, Double-network hydrogel, Multi-photon polymerization

In this study, we report spatially selective fabrication of double-network hydrogel (DN gel) in crosslinked hydrogel based on multi-photon polymerization induced by focused femtosecond laser pulses. As a result of observation of fabricated structure during compression, the shrinkage rate was lower in the region where the laser pulses were focused and scanned compared with the unirradiated region, indicating change of the mechanical properties of the spatially-selectively fabricated DN gel structure.