Electrical anisotropy in two-dimensional reduced graphene oxide/polypyrrole-based ordered conjugated system ensure multi-stimulus response signal adapter  

二维还原氧化石墨烯/聚吡咯基有序共轭体系中电各向异性确保多刺激响应信号适配

作　　者：Yuqiao Chai Ruoqi Chen Xinlei Ma Yonglin He Huanrong Zhang Tianlai Xia Jitao Chen Yushu Wang Hui Ma Xusheng Wang Wei Rao Xinyue Zhang Yapei Wang Junhui Ji Fengwang Li Mianqi Xue 柴玉俏;陈若琪;马欣蕾;贺咏霖;张桓荣;夏天来;陈继涛;王玉书;马慧;王旭升;饶伟;张馨月;王亚培;季君晖;李逢旺;薛面起

机构地区：[1]Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]College of Material Science and Chemical Engineering,Ningbo University of Technology,Ningbo 315211,China [3]Department of Chemistry,Renmin University of China,Beijing 100872,China [4]College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,China [5]Qingdao Innovation and Development Center,Harbin Engineering University,Qingdao 266400,China [6]School of Chemical and Biomolecular Engineering,The University of Sydney,New South Wales 2006,Australia

出　　处：《Science China Materials》2024年第12期3966-3975,共10页中国科学（材料科学）（英文版）

基　　金：supported by Beijing Natural Science Foundation(2232069);the National Natural Science Foundation of China(21875266);the Research Start-up Fund of Ningbo University of Technology(2130011540030)。

摘　　要：Electronic technology,based on signal conversion induced by voltage stimulation,forms the core foundation of the state-of-the-art intelligent devices,tools,and equipment.Such conversions are inherently binary and limited because they rely solely on voltage,which presents challenges for many emerging frontier applications.Here,a two-dimensional ordered conjugated system of reduced graphene oxide/polypyrrole(rGO/PPy)has been developed.Multi-stimulus response signal adapters have been constructed,utilizing the electrical anisotropy inherent in the rGO/PPy system.This electrical anisotropy,derived from the quasi-two-dimensional geometry of rGO/PPy,enables the device to produce distinct electrical signals in response to various stimuli.With effective responses to light and pressure,the two most common input stimuli other than voltage,it can output quaternary/denary signals and visual optical signals,as well as enables information encryption using passive devices.Furthermore,the signal adapter demonstrates high cyclic stability under repeated pressure and/or light loading.The successful development of this low-cost,scalable signal adapter paves the way for the next-generation of intelligent systems,promising advancements in human-computer interaction,electronic skin,biological implant equipment,and related fields.基于电压刺激诱导信号转换的电子技术是现代先进智能设备、工具和仪器的核心基础之一.然而,此类转换仅由外加电压刺激引起,导致其信号输出一般为二进制,难以满足众多新兴前沿应用场景的需求.在此,我们开发了一种由二维还原氧化石墨烯/聚吡咯(rGO/PPy)构成的有序共轭体系,并利用其电学各向异性构建了可响应多种刺激的信号适配器.rGO/PPy的准二维几何结构产生的电学各向异性确保了设备能够在不同刺激下产生不同类型的电信号.通过对光和压力输入(除了电压之外的两种最常见输入刺激)的有效识别,该信号适配器实现了四进制/十进制信号和可视化光信号的输出,并进一步实现了基于无源器件的信息加密.此外,该信号适配器在多次压力/光刺激过程中展现出高循环稳定性.这种低成本、便于大规模生产的信号适配器开启了新一代智能系统构建的大门,并有望推动人机交互、电子皮肤、生物植入设备等领域的发展.

关 键 词：electrical anisotropy signal adapters POLYPYRROLE graphene two-dimensional conjugated system 

分 类 号：TB332[一般工业技术—材料科学与工程]