Digitally-defined ultrathin transparent wireless sensor network for room-scale imperceptible ambient intelligence  

作　　者：Yunxia Jin Mengxia Yu Dat T.Nguyen Xin Yang Zhipeng Li Ze Xiong Chenhui Li Yuxin Liu Yong Lin Kong John S.Ho 

机构地区：[1]Institute for Health Innovation and Technology,National University of Singapore,Singapore 117599,Singapore [2]Department of Biomedical Engineering,National University of Singapore,Singapore 119276,Singapore [3]Department of Electrical and Computer Engineering,National University of Singapore,Singapore 117583,Singapore [4]Integrative Sciences and Engineering Programme,National University of Singapore Graduate School,Singapore 119077,Singapore [5]The N.1 Institute for Health,National University of Singapore,Singapore 117456,Singapore [6]Institute of Materials Research and Engineering,Agency for Science Technology and Research,Singapore 138634,Singapore [7]Department of Mechanical Engineering,University of Utah,Salt Lake City,UT 84112,USA

出　　处：《npj Flexible Electronics》2024年第1期869-878,共10页npj-柔性电子(英文)

基　　金：support from the National Institutes of Health(NIH)NIBIB Trailblazer Award(R21-EB029563);NIH R01 Award(R01-EB032959);Office of Naval Research Young Investigator Program Award(N00014-23-1-2391);CDMRP Discovery Award(HT9425-23-1-0041).

摘　　要：Wireless and battery-free radio-frequency(RF)sensors can be used to create physical spaces that ambiently sense and respond to human activities.Making such sensors ultra-flexible and transparent is important to preserve the aesthetics of living environments,accommodate daily activities,and functionally integrate with objects.However,existing RF sensors are unable to simultaneously achieve high transparency,flexibility,and the electrical conductivity required for remote room-scale operation.Here,we report 4.5μm RF tag sensors achieving transparency exceeding 90%that provide capabilities in room-scale ambient wireless sensing.We develop a laser-assisted water-based adhesion-reversion process to digitally realize computer-aided RF design at scale.By individually tagging multiple objects and regions of the human body,we demonstrate multiplexed wireless tracking of humanenvironment interactions and physiological signals at a range of up to 8m.These radio-frequency identification sensors open opportunities for non-intrusive wireless sensing of daily living spaces for applications in health monitoring and elderly care.

关 键 词：network AMBIENT TRANSPARENT 

分 类 号：TN9[电子电信—信息与通信工程]