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Triboelectric Touch‐Free Screen Sensor for Noncontact Gesture Recognizing
Author(s) -
Tang Yingjie,
Zhou Hao,
Sun Xiupeng,
Diao Ninghua,
Wang Jianbo,
Zhang Baosen,
Qin Cheng,
Liang Erjun,
Mao Yanchao
Publication year - 2020
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201907893
Subject(s) - triboelectric effect , gesture , capacitive sensing , electronics , proximity sensor , interface (matter) , computer science , touchpad , smartwatch , fist , gesture recognition , lift (data mining) , artificial intelligence , electrical engineering , computer hardware , human–computer interaction , materials science , embedded system , wearable computer , engineering , composite material , physiology , bubble , maximum bubble pressure method , parallel computing , data mining , biology , operating system
An intelligent human–machine interface (HMI) is a crucial medium for exchanging information between people and electronics. As one of the most important HMI devices, touch screen sensors are widely applied in personal electronics in daily life. However, as the most commonly used touch screen sensor, capacitive sensors can only detect limited kinds of gestures such as touching and sliding. Here, a triboelectric touch‐free screen sensor (TSS) is reported for recognizing diverse gestures in a noncontact operating mode by utilizing the charges naturally carried on the human body. Compared with conventional capacitive sensors, the TSS is capable of detecting various gestures such as the drop and lift of finger with different speeds, making a fist, opening palm, and flipping palm with different directions. Based on the TSS, an intelligent noncontact screen control system is further developed, which is used to unlock the smartphone interface by the noncontact operating mode. This research for the first time proposes the concept that taking the human body itself to participate in triboelectric self‐powered noncontact sensing and provides a touch‐free design concept to develop the next generation of screen sensors. It can alter the usual way that people operating their personal electronics.