ACS Applied Electronic Materials, Journal Year: 2024, Volume and Issue: 6(5), P. 3522 - 3531

Published: April 25, 2024

As an important part of flexible wearable electronics, hydrogel sensors have aroused great interest. However, two serious issues, low self-healing efficiency and terrible environmental adaptability, largely limited the development sensors. Herein, a versatile gel elastomer (P(HEA-AA)/PEI/Gly) is synthesized via introducing polyethylenimine (PEI), 2-hydroxyethyl acrylate (HEA), acrylic acid (AA) into glycerin/water binary solvent system, which exhibits high stretchability (1427% elongation), outstanding (95%), exceptional low-temperature adaptability (−35 °C) as well robust self-adhesion. Meanwhile, assembled P(HEA-AA)/PEI/Gly sensor possesses reliable sensitivity, wide strain range, long-term cycling stability, can not only precisely monitor different mechanical deformations (stretching, twisting, bending) but also specifically distinguish human activities in opposite direction. In particular, even extremely cold environment −35 °C, still withstand large damages caused by external factors restore its sensing capability. This feature inspires us to construct communication device with function that accurately deliver various valuable information receiver under extreme conditions, such "Warn", "Cold", "Dangerous". work provides feasible method excellent temperature tolerant paves way for applications electronic skin, artificial intelligence, soft robotics.

Language: Английский