Rapidly self-healing, highly conductive, stretchable, body-attachable hydrogel sensor for soft electronics

被引：3

作者：

Khadka, Ashwin ^{[1
]}

Pradhan, Shrayas ^{[1
]}

Samuel, Edmund ^{[2
]}

Joshi, Bhavana ^{[1
]}

Gao, Hao ^{[1
]}

Aldalbahi, Ali ^{[3
]}

Periyasami, Govindasami ^{[3
]}

Lee, Hae-Seok ^{[2
]}

Yoon, Sam S. ^{[1
]}

机构：

[1] Korea Univ, Sch Mech Engn, Seoul 02841, South Korea

[2] Korea Univ, Grad Sch Energy & Environm, KU KIST Green Sch, Energy Environm Policy & Technol, Seoul 02841, South Korea

[3] King Saud Univ, Coll Sci, Dept Chem, Riyadh 11451, Saudi Arabia

来源：

COMPOSITES COMMUNICATIONS | 2024年 / 52卷

基金：

新加坡国家研究基金会;

关键词：

Self-healing; Hydrogel; PVA; Soft electronics;

D O I：

10.1016/j.coco.2024.102158

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Self-healing hydrogels are widely used in body-attachable sensors because they are stretchable, skin-friendly, highly sensitive, and mechanically strong. We developed a polyvinyl alcohol/poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PVA/PEDOT:PSS) hydrogel that responds rapidly and self-heals following external mechanical damage for use in body-attachable-sensor applications. The addition of ethylenediamine during hydrogel synthesis enhanced the crosslinking reaction and facilitated gelation. The hydrogel demonstrated a self-healing efficiency of 80 % and a gauge factor of 0.67 when strained in the 0-70 % range. The selfhealing sensor exhibited response and recovery times of less than 0.25 s, with a self-healing time of less than 5 min. The self-healing sensor was tested for bodily motions, such as finger pressure, bending, voice vibration, severe stretching at 70 % strain, and stretching for 1000 continuous cycles.

引用

页数：10