[9a-Z18-1~10] 3.7 Laser processing

[9a-Z18-1] Microfabrication of double-network hydrogel by femtosecond laser

〇Kaneto Tsunemitsu¹, Ryo Sano¹, 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

We demonstrate the microfabrication of double-network hydrogel (DN gel) by multi-photon polymerization induced by focused femtosecond laser pulses. Two different poly (ethylene glycol) diacrylate (PEGDA) solutions (Mw=700 and 4000) were cured as both structures were crossing each other, allowing overlapped structure to form double-network hydrogel composed of both employed polymer chains.