Journal Article10.1002/ADMA.201700321
A Bioinspired Mineral Hydrogel as a Self-Healable, Mechanically Adaptable Ionic Skin for Highly Sensitive Pressure Sensing.
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TL;DR: A bioinspired mineral hydrogel is developed to fabricate a novel type of mechanically adaptable ionic skin sensor that is compliant, self-healable, and can sense subtle pressure changes, such as a gentle finger touch, human motion, or even small water droplets.
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Abstract: In the past two decades, artificial skin-like materials have received increasing research interests for their broad applications in artificial intelligence, wearable devices, and soft robotics. However, profound challenges remain in terms of imitating human skin because of its unique combination of mechanical and sensory properties. In this work, a bioinspired mineral hydrogel is developed to fabricate a novel type of mechanically adaptable ionic skin sensor. Due to its unique viscoelastic properties, the hydrogel-based capacitive sensor is compliant, self-healable, and can sense subtle pressure changes, such as a gentle finger touch, human motion, or even small water droplets. It might not only show great potential in applications such as artificial intelligence, human/machine interactions, personal healthcare, and wearable devices, but also promote the development of next-generation mechanically adaptable intelligent skin-like devices.
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Citations
Movable-crosslinking tough hydrogels with lithium ion as sensitive and durable compressive sensor
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Recent progress in self-healing conductive materials and flexible sensors with desired functional repairability
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TL;DR: In this article, the main methods to prepare self-healing flexible sensors are summarized and discussed, consisting of selfhealing materials with conductive layers, self healing materials with embedded conductive network and self healing ionic conducting hydrogels, and a summary and perspective on future research directions and the potential of each strategy are given.
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