La Moonwoo, Choi Jun Hyuk, Choi Jeong-Young, Hwang Taek Yong, Kang Jeongjin, Choi Dongwhi
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.
Micromachines (Basel). 2018 Oct 27;9(11):551. doi: 10.3390/mi9110551.
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.
摩擦纳米发电机（TENG）利用两种不同材料表面的接触起电并伴随电感应现象，已被提出并被视为一种很有前景的能量收集器。研究人员已尝试在TENG表面形成所需结构，并成功证明了表面形貌对其电输出性能的有利影响。在本研究中，我们首次提出结构化铝（SA）辅助的TENG（SA-TENG），其中TENG的一个接触层由通过金属对金属（M2M）压印工艺形成的结构化金属表面组成。通过简单的手指轻敲动作，制造出的SA-TENG能产生超过200V的开路电压和60μA的短路电流。鉴于M2M压印工艺的应用允许对各种金属表面进行快速、通用且易于实现的结构化处理，这些金属表面可直接用作TENG的接触层以大幅提高其电输出性能，从制造角度来看，本研究可能会大大拓宽TENG的适用性。
