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Micromachines 2018, 9(11), 551;

Development of the Triboelectric Nanogenerator Using a Metal-to-Metal Imprinting Process for Improved Electrical Output

Molds & Dies Technology R&D Group, Korea Institute of Industrial Technology (KITECH), Incheon 21999, Korea
Department of Mechanical Engineering, Kyung Hee University, Yongin 17104, Korea
Author to whom correspondence should be addressed.
Received: 1 October 2018 / Revised: 18 October 2018 / Accepted: 23 October 2018 / Published: 27 October 2018
(This article belongs to the Special Issue Nanogenerators in Korea)
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Triboelectric nanogenerators (TENG), which utilize contact electrification of two different material surfaces accompanied by electrical induction has been proposed and is considered as a promising energy harvester. Researchers have attempted to form desired structures on TENG surfaces and successfully demonstrated the advantageous effect of surface topography on its electrical output performance. In this study, we first propose the structured Al (SA)-assisted TENG (SA-TENG), where one of the contact layers of the TENG is composed of a structured metal surface formed by a metal-to-metal (M2M) imprinting process. The fabricated SA-TENG generates more than 200 V of open-circuit voltage and 60 µA of short-circuit current through a simple finger tapping motion. Given that the utilization of the M2M imprinting process allows for the rapid, versatile and easily accessible structuring of various metal surfaces, which can be directly used as a contact layer of the TENG to substantially enhance its electrical output performance, the present study may considerably broaden the applicability of the TENG in terms of its fabrication standpoint. View Full-Text
Keywords: triboelectric nanogenerator; nanoimprinting; nanostructures; microstructures; femtosecond laser triboelectric nanogenerator; nanoimprinting; nanostructures; microstructures; femtosecond laser

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La, M.; Choi, J.H.; Choi, J.-Y.; Hwang, T.Y.; Kang, J.; Choi, D. Development of the Triboelectric Nanogenerator Using a Metal-to-Metal Imprinting Process for Improved Electrical Output. Micromachines 2018, 9, 551.

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