Stretchable, Biocompatible, and Multifunctional Silk Fibroin-Based Hydrogels toward Wearable Strain/Pressure Sensors and Triboelectric Nanogenerators.,ACS Applied Materials & Interfaces

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Stretchable, Biocompatible, and Multifunctional Silk Fibroin-Based Hydrogels toward Wearable Strain/Pressure Sensors and Triboelectric Nanogenerators.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-01-14 , DOI: 10.1021/acsami.9b19721
Faliang He ₁ , Xingyan You ₁ , Hao Gong ₁ , Yun Yang ₁ , Tian Bai ₁ , Weiguo Wang ₁ , Wenxi Guo ₁ , Xiangyang Liu _{1,

2} , Meidan Ye ₁

Affiliation

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.

中文翻译：

可拉伸，生物相容性和多功能的丝素蛋白基水凝胶，适用于穿戴式应变/压力传感器和摩擦电纳米发电机。

如今，人们致力于建立具有出色的可拉伸性，高灵敏度，良好的机械强度和多功能特性的可穿戴电子产品。在此，通过将丝素蛋白，聚丙烯酰胺，氧化石墨烯和聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）按比例混合来合理设计软导电性水凝胶。所得的水凝胶具有可观的可拉伸性和可压缩性，使其能够组装成具有宽广的感测范围（应变2％-600％；压力0.5-119.4 kPa）的应变/压力传感器，并且具有可靠的稳定性。然后，相应的传感器能够监视人体的一系列物理信号（例如，关节运动，面部姿势，脉搏，呼吸等）。特别是，基于水凝胶的传感器具有生物相容性，对人体皮肤无过敏反应。更有趣的是，这种导电水凝胶在摩擦电纳米发生器中工作时表现出正响应。因此，它点亮了20个商用绿色发光二极管。因此，这种基于丝素蛋白的水凝胶是一种可穿戴电子产品的多功能材料，在健康和运动监测器，软机器人和电源中具有广泛的应用。

更新日期：2020-01-29

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