期刊
ACS NANO
卷 17, 期 6, 页码 5921-5934出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.3c00015
关键词
interactive sensing; structural color; mechanochromism; stretchable electronics; dual-signal
This research aims to design a flexible optical/electrical skin capable of responding to complex stimuli with interactive feedback of human-readable structural colors. The OE-skin consists of various layers including an ionic electrode, elastomer dielectric layer, chromotropic layer, and a conductive carbon nanotube/MXene layer. It delivers an ultrafast, accurate response for capacitive pressure sensing and visualizes complex deformations in high-resolution spatial colors.
Following earlier research efforts dedicated to the realization of multifunctional sensing, recent developments of artificial skins endeavor to go beyond human sensory functions by integrating interactive visualization of strain and pressure stimuli. Inspired by the microcracked structure of spider slit organs and the mechanochromic mechanism of chameleons, this work aims to design a flexible optical/electrical skin (OE-skin) capable of responding to complex stimuli with interactive feedback of human-readable structural colors. The OE-skin consists of an ionic electrode combined with an elastomer dielectric layer, a chromotropic layer containing photonic crystals and a conductive carbon nanotube/MXene layer. The electrode/dielectric layers function as a capacitive pressure sensor. The mechanochromic photonic crystals of ferroferric oxide-carbon magnetic arrays embedded in the gelatin/polyacrylamide stretchable hydrogel film perceive strain and pressure stimuli with bright color switching outputs in the full visible spectrum. The underlying microcracked conductive layer is devoted to ultrasensitive strain sensing with a gauge factor of 191.8. The multilayered OE-skin delivers an ultrafast, accurate response for capacitive pressure sensing with a detection limit of 75 Pa and long-term stability of 5000 cycles, while visualizing complex deformations in the form of high-resolution spatial colors. These findings offer deep insights into the rational design of OE-skins as multifunctional sensing devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据