期刊
MATERIALS HORIZONS
卷 9, 期 11, 页码 2846-2853出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2mh00692h
关键词
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资金
- National Research Foundation of Korea - Ministry of Education [2018R1D1A1B07043442]
- National Research Foundation of Korea [2022R1A4A1034312]
- National Research Foundation of Korea [2022R1A4A1034312, 2018R1D1A1B07043442] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The researchers have successfully developed a self-powered image array composed of 16 touch-free sensors made with InN nanowires. These sensors can detect the position of a human hand 30 cm away from the device surface without using a power supply. They can also distinguish different materials in non-contact mode and have the potential for detecting changes in the surface texture of human skin.
We successfully develop a self-powered image array (IA) composed of 16 touch-free sensors (TFSs) fabricated with semiconductor InN nanowires (NWs) as a response medium. Without using a power supply, the InN-NW TFS can detect the position of a human hand 30 cm away from the device surface. It also distinguishes different materials such as polyimide, Al foil, printing paper, latex, and polyvinyl chloride in non-contact mode at a distance of 1 cm. The self-powered TFS-IA clearly distinguishes square-shaped transparent polydimethylsiloxane film attached to the back of a human hand positioned 5 cm from the device, indicating the possibility for detecting changes in the surface texture of human skin, such as skin burns or skin cancer. The performance of the self-powered TFS and TFS-IA is attributed to high electrostatic induction of InN NWs by external triboelectricity resulting from the simple movement of the target object, which differs markedly from conventional sensors designed to detect variations in the temperature or light essentially using a power supply.
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