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a Basic contact angle types for evaluating surface wettability. b Schematic of the contact angle of the gel surface with different wettability. c Schematic of the contact angle in the Wenzel state and Cassie state
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The special wettable gel material solves the problem that the rigid solid surface with special wettability does not perform well in the face of flexibility requirements to a certain extent. Therefore, the research and development of special wettable gel materials has attracted widespread attention and has shown great application potential in differ...
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Citations
Gels with excellent ionic conductivity and resilience to temperature extremes are sought in practical applications due to their potential for building flexible and wearable soft electronics. In this work, highly conductive eutectogels are fabricated by one‐step polymerization of (3‐acrylamidopropyl) trimethyl ammonium chloride in deep eutectic solvents (DESs). Owing to the ion‐conductive polymer networks facilitating ion conduction, these eutectogels exhibit a significant enhancement in ionic conductivity (27.1 mS cm⁻¹), demonstrating an order of magnitude higher than that of pure DES. Furthermore, due to several unique properties of DES, these eutectogels exhibit excellent stretchability (>1000%), good adhesion, as well as nonflammability performance over a wide temperature range (−40 to 100°C). Moreover, the strain sensor based on the eutectogel shows a highly sensitive response (gauge factor = 6.92) to a broad strain range (from 450% to 550%), enabling the accurate and reliable detection of various human movements. Additionally, our findings reveal that the eutectogel‐based sensor displays a comparable pattern of response curves with negligible signal deterioration, even at extreme temperatures of −20 and 60°C. The results of this work will promote novel applications in the construction of flexible and safe devices.
Human skin is soft, stretchable, elastic, has a strong ability to heal when injured, and can sense a variety of stimuli. Therefore, the development of materials that can simulate skin...
