公开(公告)号：US20210198439A1

公开(公告)日：2021-07-01

申请号：US16888325

申请日：2020-05-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung Koo PARK ,  Bong Je PARK ,  Mee Jeong CHOI ,  Suntak PARK ,  Eun Jin SHIN ,  Sungryul YUN ,  Jae Woong YOON

IPC: C08J5/18

Abstract: An embodiment of the inventive concept provides a method of manufacturing a polymer film, the method including: preparing a first copolymer containing a first functional group; preparing a second copolymer containing a second functional group; preparing a first compound containing a third functional group; and performing a cross-linking reaction by mixing the first copolymer, the second copolymer, and the first compound, wherein the cross-linking reaction includes a reaction of the first functional group and the second functional group and a reaction of the second functional group and the third functional group, the first compound includes a polar group and any one group selected from among a vinyl group, an aryl group, and an acrylate group, and the third functional group has reactivity with respect to the second functional group, but does not have reactivity with respect to the first functional group.

公开(公告)号：US20210180620A1

公开(公告)日：2021-06-17

申请号：US17116665

申请日：2020-12-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seongcheol MUN ,  Sungryul YUN ,  Jeong Muk LIM ,  Inwook HWANG

IPC: F15B15/10

Abstract: Provided is a soft actuator. The soft actuator includes a first bistable polymer layer, a second bistable polymer layer on the first bistable polymer layer, a first flexible electrode layer on an upper surface of the second bistable polymer layer, a second flexible electrode layer between the first bistable polymer layer and the second bistable polymer layer, a first light absorption heating layer disposed on the first flexible electrode layer and configured to increase a temperature when light is absorbed, and a first voltage supply unit, wherein the first voltage supply unit is electrically connected to the first flexible electrode layer and the second flexible electrode layer.