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Applications of MXenes in human-like sensors and actuators
Summary
This review covers the applications of MXenes, an emerging class of two-dimensional materials, in developing sensors that mimic human senses and actuators that simulate muscle function. Researchers describe how MXene-based composites are being used in image sensors, gas sensors, acoustic devices, tactile sensors for electronic skin, and artificial actuators. The study highlights future opportunities for MXene research in artificial intelligence, robotics, healthcare, and biomedical engineering.
Abstract Human beings perceive the world through the senses of sight, hearing, smell, taste, touch, space, and balance. The first five senses are prerequisites for people to live. The sensing organs upload information to the nervous systems, including the brain, for interpreting the surrounding environment. Then, the brain sends commands to muscles reflexively to react to stimuli, including light, gas, chemicals, sound, and pressure. MXene, as an emerging two-dimensional material, has been intensively adopted in the applications of various sensors and actuators. In this review, we update the sensors to mimic five primary senses and actuators for stimulating muscles, which employ MXene-based film, membrane, and composite with other functional materials. First, a brief introduction is delivered for the structure, properties, and synthesis methods of MXenes. Then, we feed the readers the recent reports on the MXene-derived image sensors as artificial retinas, gas sensors, chemical biosensors, acoustic devices, and tactile sensors for electronic skin. Besides, the actuators of MXene-based composite are introduced. Eventually, future opportunities are given to MXene research based on the requirements of artificial intelligence and humanoid robot, which may induce prospects in accompanying healthcare and biomedical engineering applications.
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