US 12,479,934 B2
Water responsive soft actuator and driving method thereof
Dong Sung Kim, Pohang-si (KR); Hyeon Seok Han, Pohang-si (KR); and Andrew Choi, Pohang-si (KR)
Assigned to POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION, Pohang-si (KR)
Filed by POSTECH Research and Business Development Foundation, Pohang-si (KR)
Filed on Mar. 22, 2022, as Appl. No. 17/700,686.
Claims priority of application No. 10-2021-0043595 (KR), filed on Apr. 2, 2021.
Prior Publication US 2022/0315678 A1, Oct. 6, 2022
Int. Cl. C08F 120/56 (2006.01); C08F 2/50 (2006.01); F03G 7/00 (2006.01); F03G 7/06 (2006.01)
CPC C08F 120/56 (2013.01) [C08F 2/50 (2013.01); F03G 7/0612 (2021.08)] 11 Claims
OG exemplary drawing
 
1. A water responsive soft actuator comprising water-absorbable polyisopropylacrylamide,
wherein the water responsive soft actuator is driven by water absorption of the polyisopropylacrylamide, and
wherein the polyisopropylacrylamide has a structure comprising crosslinked N-isopropylacrylamide, the structure corresponding to synthesis from an aqueous solution comprising N-isopropylacrylamide monomer and water in a weight ratio of 187:13 to 95:5.