Stretchable on-skin touchless screen sensor enabled by ionic hydrogel  

作　　者：Tianxing Feng Dan Ling Chaoyue Li Wentao Zheng Shichuan Zhang Chang Li Artem Emel’yanov Alexander S.Pozdnyakov Lijun Lu Yanchao Mao 

机构地区：[1]Key Laboratory of Materials Physics of Ministry of Education,School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450001,China [2]A.E.Favorsky Irkutsk Institute of Chemistry,Siberian Branch of the Russian Academy of Sciences,Irkutsk 664033,Russian Federation

出　　处：《Nano Research》2024年第5期4462-4470,共9页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.62074137,52303112);the Foundation for Outstanding Young Teachers in Universities of Henan Province(No.2021GGJS014);the China Postdoctoral Science Foundation(Nos.2022TQ0281,2023M733213).

摘　　要：Screen sensors are the most commonly used human-machine interfaces in our everyday life,which have been extensively applied in personal electronics like cellphones.Touchless screen sensors are attracting growing interest due to their distinct advantages of high interaction freedom,comfortability,and hand hygiene.However,the material compositions of current touchless screen sensors are rigid and fragile,hardly meeting the needs of wearable and stretchable on-skin electronics development.Additionally,these touchless screen sensors are also restricted by high power consumption,limited gesture types of recognition,and the requirement of light conditions.Here,we report a stretchable on-skin touchless screen sensor(OTSS)enabled by an ionic hydrogel-based triboelectric nanogenerator(TENG).Compared with current touchless screen sensors,the OTSS is stretchable,self-powered,and competent to recognize diverse gestures by making use of charges naturally carried on fingers without the need of sufficient light conditions.An on-skin noncontact screen operating system is further demonstrated on the basis of the OTSS,which could unlock a cellphone interface in touchless operation mode on the human skin.This work for the first time introduces the on-skin touchless concept to screen sensors and offers a direction to develop new-generation screen sensors for future cellphones and personal electronics.

关 键 词：human-machine interface STRETCHABLE ionic hydrogel triboelectric nanogenerator self-powered sensor 

分 类 号：TQ427.26[化学工程] TP212[自动化与计算机技术—检测技术与自动化装置]