Stretchable, Biocompatible, and Multifunctional Silk Fibroin-Based Hydrogels toward Wearable Strain/Pressure Sensors and Triboelectric Nanogenerators

被引：370

作者：

He, Faliang ^{[1
]}

You, Xingyan ^{[1
]}

Gong, Hao ^{[1
]}

Yang, Yun ^{[1
]}

Bai, Tian ^{[1
]}

Wang, Weiguo ^{[1
]}

Guo, Wenxi ^{[1
]}

Liu, Xiangyang ^{[1
,2
]}

Ye, Meidan ^{[1
]}

机构：

[1] Xiamen Univ, Res Inst Biomimet & Soft Matter, Fujian Prov Key Lab Soft Funct Mat Res, Dept Phys, Xiamen 361005, Peoples R China

[2] Natl Univ Singapore, Dept Phys, Fac Sci, Singapore 119077, Singapore

来源：

ACS APPLIED MATERIALS & INTERFACES | 2020年 / 12卷 / 05期

关键词：

silk fibroin; hydrogel; strain/pressure sensors; human motion; triboelectric nanogenerators;

D O I：

10.1021/acsami.9b19721

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nowadays, great effort has been devoted to establishing wearable electronics with excellent stretchability, high sensitivity, good mechanical strength, and multifunctional characteristics. Herein, a soft conductive hydrogel is rationally designed by proportionally mixing silk fibroin, polyacrylamide, graphene oxide, and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate). The resultant hydrogel has considerable stretchability and compressibility, which enables it to be assembled into a strain/pressure sensor with a wide sensing range (strain, 2%-600%; pressure, 0.5-119.4 kPa) and reliable stability. Then, the corresponding sensor is capable of monitoring a series of physical signals of the human body (e.g., joint movement, facial gesture, pulse, breathing, etc.). In particular, the hydrogel-based sensor is biocompatible, with no anaphylactic reaction on human skin. More interestingly, this conductive hydrogel exhibits a positive response when it works in a triboelectric nanogenerator; consequently, it lights up 20 commericial green light-emitting diodes. Thus, this silk fibroin-based hydrogel is a kind of multifunctional material toward wearable electronics with versatile applications in health and exercise monitors, soft robots, and power sources.

引用

页码：6442 / 6450

页数：9

共 49 条

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