| 초록 |
Hydrogel soft actuators, which convert external stimuli, such as electricity, heat, light, chemical, pH or humidity have attracted increasing attention due to their promising potential applications in soft robotics, drug delivery, and artificial muscles. In general, Poly(N-isopropylacrylamide) (PNIPAAm) is a thermo-responsive hydrogel actuators which exhibit a lower critical solution temperature (LCST) at approximately 32 ℃ in aqueous phase. The addition of gold nanorods (AuNRs) as a photothermal agent gives hydrogels their photothermal effect and mechanical behaviors. In the study, we prepared PNIPAAm-based hydrogel with thermo-responsive bending activity using UV irradiation. The equilibrium water content (EWC), morphologies, swelling/deswelling kinetics and mechanical properties were investigated. In addition, photothermally triggered bending motion was determined under near-infrared irradiation. |
