Colloidal Photonic Crystal Strain Sensor Integrated with Deformable Graphene Phototransducer
Colloidal Photonic Crystal Strain Sensor Integrated with Deformable Graphene Phototransducer
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DOI：
10.1002/adfm.201902216
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发表时间：
2019-08-01
影响因子：
19
通讯作者：
Nam, SungWoo
中科院分区：
文献类型：
--
作者：
Snapp, Peter;Kang, Pilgyu;Nam, SungWoo
柔性的、结构化的光子纳米结构，例如胶体光子晶体（CPC），可以用作比色应变传感器，其中外部施加的应变导致明显的颜色变化。然而，CPC对应变的响应在不使用光学光谱的情况下难以量化。由于缺乏柔性/可拉伸的电换能器，CPC的颜色变化的柔性电读出的集成是一个挑战。这项工作详细介绍了一种比色应变传感器与光电量化的基础上的集成系统的CPC在一个皱巴巴的石墨烯光电传感器，光电量化CPC，应变响应。该混合系统能够直接视觉感知应变，而通过混合系统的电气测量进行的应变量化比褶皱石墨烯应变传感器的性能高出100多倍。光子感测元件与可变形换能器的独特组合将允许开发具有高灵敏度的新颖的电可量化比色传感器。
Flexible, architectured, photonic nanostructures such as colloidal photonic crystals (CPCs) can serve as colorimetric strain sensors, where external applied strain leads to a noticeable color change. However, CPCs' response to strain is difficult to quantify without the use of optical spectroscopy. Integration of flexible electrical readout of CPCs' color change is a challenge due to a lack of flexible/stretchable electrical transducers. This work details a colorimetric strain sensor with optoelectrical quantification based on an integrated system of CPCs over a crumpled graphene phototransducer, which optoelectrically quantifies CPCs, response to strain. The hybrid system enables direct visual perception of strain, while strain quantification via electrical measurement of the hybrid system outperforms that of crumpled graphene strain sensors by more than 100 times. The unique combination of a photonic sensing element with a deformable transducer will allow for the development of novel, electrically quantifiable colorimetric sensors with high sensitivity.