Highly stretchable strain sensors with reduced graphene oxide sensing liquids for wearable electronics

Nanoscale
Minxuan XuYue Zhang

Abstract

Strain sensors with high sensitivity, broad sensing ranges and excellent durable stability are highly desirable due to their promising potential in electronic skins and human-friendly wearable interactive systems. Herein, we report a high-performance strain sensor based on rGO (reduced graphene oxide)/DI (deionized water) sensing elements. The strain sensors were fabricated by using Ecoflex rubber filled with rGO/DI conductive liquids via template methods, making the process simple, low-cost and scalable. The as-assembled strain sensors can be used to reflect both stretching and compressing with high sensitivity (a maximum gauge factor of 31.6 and a pressure sensitivity of 0.122 kPa-1), an ultralow limit of detection (0.1% strain), and excellent reliability and stability (>15 000 cycles for pressuring and >10 000 cycles for stretching). In particular, the maximum sensing range is up to 400%, much wider than that of the sensor recently reported. More significantly, the strain sensors are able to distinguish between touch/compressive (resistance decrease) and tensile (resistance increase) deformation, which has not been explored before. This interesting property of strain sensors is due to the micro-contact of nanomaterials in a ...Continue Reading

References

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Citations

Jun 28, 2019·Frontiers in Chemistry·Haizhou HuangLitao Sun
Aug 30, 2019·ACS Applied Materials & Interfaces·Jingjing GuoQionghai Dai
Dec 24, 2018·ACS Applied Materials & Interfaces·Xinqin LiaoYuanjin Zheng
Sep 27, 2018·ACS Applied Materials & Interfaces·Shuying WuChun H Wang
Mar 14, 2020·ACS Applied Materials & Interfaces·Vaishakh KedambaimooleRajanna Konandur
Dec 1, 2021·ACS Sensors·Vijay ShirhattiKonandur Rajanna
Dec 16, 2021·ACS Applied Materials & Interfaces·Prakash KaripothRavinder Dahiya

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