Neuron-inspired multifunctional conductive hydrogels for flexible wearable sensors

Abstract

A human-neuron-inspired multifunctional flexible wearable sensor was fabricated in this study. It possessed high sensitivity (GFmax = 68.64, Smax = 0.229 kPa−1), flexibility, stability (∼300 cycles), remoldability, and strain/pressure sensitivity.

Multifunctional polyurethane hydrogel based on a phenol–carbamate network and an Fe3+–polyphenol coordination bond toward NIR light triggered actuators and strain sensors

“…It is well known that the recyclability of the conductive hydrogel is of great importantce. 55 Usually, the traditional thermosetting polymers that are capable of good mechanical properties cannot be recycled, owing to their stable covalent cross-linked structure. However, the dynamic phenol–carbamate bonds are thermally unstable, which can be dissociated and recombined at a certain temperature.…”

Transparent stretchable hydrogel sensors: materials, design and applications

“…Hydrogel sensors with transparent properties have the unique advantages of good visual effect, being able to be used for ''invisible'' equipment and visualizing optical monitoring, as well as improving the aesthetics of daily usage, which endows sensors with special applications, including in beautiful electronic skin, [41][42][43][44] wearable electronic devices, [45][46][47][48] touch screens for human-machine interaction, [49][50][51] etc.…”

A Highly Mechanical, Conductive, and Cryophylactic Double Network Hydrogel for Flexible and Low-Temperature Tolerant Strain Sensors

“…With the increasing demands of pressure and deformation detection in artificial intelligence devices, strain sensors have attracted massive attention in recent years [ 1 , 2 , 3 , 4 ]. A strain sensor can detect a subtle tensile and bending deformation by outputting electrical signals such as current, resistance, and capacitance changes [ 5 , 6 , 7 ]. For better application in human body detection, strain sensors based on soft and biocompatible materials need to be developed.…”