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Facilely prepared layer-by-layer graphene membrane-based pressure sensor with high sensitivity and stability for smart wearable devices

引用

Journal of Materials Science & Technology 2020年第10期42卷 241-247页

作者： Tao Liu Caizhen Zhu Wei Wu Kai-Ning Liao Xianjing Gong Qijun Sun Robert K.Y.Li Department of Materials Science and Engineering City University of Hong KongTat Chee AvenueKowloonHong KongChina Institute of Low-dimensional Materials Genome Initiative College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060China National Engineering Research Center of Novel equipment for Polymer Processing Key Laboratory of Polymer Processing Engineering of Ministry of EducationSchool of Mechanical and Automotive EngineeringSouth China University of TechnologyGuangzhou510640China State key laboratory of Organic-Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing100029China

With the prosperous development of artificial intelligence,medical diagnosis and electronic skins,wearable electronic devices have drawn much attention in our daily *** pressure sensors based on carbon materials with ultrahigh sensitivity,especially in a large pressure range regime are highly required in wearable *** this work,graphene membrane with a layer-by-layer structure has been successfully fabricated via a facile self-assembly and air-drying(SAAD)*** the SAAD process,air-drying the self-assembled graphene hydrogels contributes to the uniform and compact layer structure in the obtained *** to the excellent mechanical and electrical properties of graphene,the pressure sensor constructed by several layers of membranes exhibits high sensitivity(52.36 kPa……-1)and repeatability(short response and recovery time)in the loading pressure range of 0–50 *** with most reported graphene-related pressure sensors,our device shows better sensitivity and wider applied pressure ***’s more,we demonstrate it shows desired results in wearable applications for pulse monitoring,breathing detection as well as different intense motion recording such as walk,run and ***’s hoped that the facilely prepared layer-by-layer graphene membrane-based pressure sensors will have more potential to be used for smart wearable devices in the future.

关键词： Graphene membrane self-assembly high sensitivity Wearable devices Human motions

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