Stimuli-Responsive Micro/Nanostructured Materials for Soft Sensors
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초록
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Mimicking the structures and functions of biological systems, we show several stimuli-responsive micro/nanostructured polymers for soft sensors with excellent sensing capabilities and their applications in wearable devices. Inspired by the fingertip skin structure and function, we demonstrate force responsive microstructures for electronic skins differentiating various mechanical stimuli, vibration, and temperature with high sensitivities. Mimicking the mechanism of astringency perception on the human tongue, we show an ion-conducting hydrogel that is selectively responsive to astringency for artificial tongue applications. Finally, we demonstrate force and sound multi-stimuli-responsive hierarchically-structured ferroelectric composite materials for frequency-selective acoustic and haptic sensors that can be used in dual-mode human–machine interfaces (HMIs).