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Polydopamine-triggered adhesive and conductive hydrogel for Morse code communication at polar environments

文献类型： 外文期刊

作者： Sun, Mengmeng 1 ; Xiang, Xueping 3 ; Qin, Haiyang 1 ; Li, Peiyi 1 ; Li, Yuanxin 1 ; Zhao, Jinxue 1 ; Zhai, Xuejing 1 ; Wu, Lidong 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Beijing 100141, Peoples R China

2.Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 201306, Peoples R China

3.Zhejiang Univ, Affiliated Hosp 2, Sch Med, Dept Pathol, Hangzhou 310009, Peoples R China

4.Dalian Ocean Univ, Coll Food Sci & Technol, Dalian 116023, Peoples R China

关键词： Anti-freezing; Conductive hydrogel; Adhesive at low temperature; Morse code communication

期刊名称：SENSORS AND ACTUATORS A-PHYSICAL （ 影响因子：4.6； 五年影响因子：4.1 ）

ISSN： 0924-4247

年卷期： 2023 年 364 卷

页码：

收录情况： SCI

摘要： Flexible electronics have been extensively explored for health monitoring and soft robotics. However, conven-tional hydrogels are inevitably frozen in polar environments and easily dehydrated, and have weak surface adhesion. Inspired by the natural mussel adhesive mechanism, we designed a polydopamine-polyacrylamide-LiCl (PPL) hydrogel with high electrical conductivity, high stretchability, and strong surface adhesion under low-temperature conditions. The PPL hydrogel exhibits robust adhesion (68.8 kPa), high electrical conductivity (384 S m-1 at room temperature, and 26 S m-1 at-40 degrees C), superior stretchability (1200%), and cycling stability (3000 cycles). The hydrogel sensor can accurately measure human joint movements, making them suitable for use in information encryption and decryption through Morse code even in polar environments (-60 degrees C). Further research in this area can lead to innovative solutions for communication and health monitoring in extreme conditions.

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