光子晶体
材料科学
光子学
结构着色
灵敏度(控制系统)
光电子学
镜头(地质)
压力传感器
光学
蓝移
声学
电子工程
物理
工程类
光致发光
热力学
作者
Xiao Wang,Yingwen Wang,Changsheng Lu,Jinhu Zhang,Wei Qiu,Sen Yang,Naibo Lin,Yu Zhang,Xiang Yang Liu
标识
DOI:10.1016/j.xcrp.2023.101490
摘要
Flexible sensors with high sensitivity and multifunctional integrated stimuli in the environment have been used in various applications. Here, we report the construction of a type of high-performance flexible photonic pressure sensor inspired by the principle of chameleon color change. The sensor is constructed based on a lens-shaped three-dimensional photonic crystal in combination with an alginate-based hydrogel. Low-pressure stimuli can lead to a slight change in the photonic band gaps that, consequently, cause the shifting of the maximal frequency and variation of the amplitude of reflective light. Ascribed to the substantially enlarged reflected spectra and the structural color shift, the sensor, with a diameter of 310 nm, exhibits an ultrahigh sensitivity of 32.2723 kPa−1, a peak shift of 30 nm, and a fast response time of 0.21 s. Furthermore, the density, sound velocity, and acoustic impedance of this conformally photonic sensor are matched with water. Therefore, this sensor provides a promising strategy for next-generation flexible photonic acoustic sensing devices.
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