http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
S. Jang(장순민),Y. Joung(정윤수),H. Kim(김현수),S. Cho(조수민),Y. Ra(라윤상),M. Kim(김민창),D. Choi(최동휘) Korean Society for Precision Engineering 2021 한국정밀공학회 학술발표대회 논문집 Vol.2021 No.11월
The development of self-powered sensors based on the contact of liquid droplets on a solid surface is getting the spotlight as a key application of the Liquid-to-Solid interacting triboelectric platform (L-S TEP). However, usually the current signal generated from the L-S TEP has low amplitude, so signal amplification is needed. In this study, the current signal amplification strategy, which shortens the electric charge transfer time by controlling the dynamics of the droplet with the utilization of the spatially heterogeneous wettability (HeW) surface on the contact layer of the L-S TEP is proposed. About 48 times larger current signal can be generated with the charge transferring channel widening resulted from the widened interface of the droplet when encountered the wettability boundary generated with porous cellulose membrane. With this current signal amplification, the utilization of the HeW surface-assisted L-S TEP (HeW-TEP) as a self-powered electrolyte concentration and pH sensor with enlarged sensitivity can be proposed. In addition, the ubiquitous data perusal can be accomplished via the sensor module packed with the HeW-TEP, BLE module, and MCU module. This study proposes a practical utilization of the L-S TEP with current signal amplification strategy based on the dynamics of the electric charges.