김형찬 정우석 강종윤 윤석진 주병권 정대용 2024-01-20T23:01:07Z 2024-01-20T23:01:07Z 2021-09-06 2008-08 1225-5475 https://pubs.kist.re.kr/handle/201004/133265 Energy harvesting from the vibration through the piezoelectric effect has been studied for powering the small wireless sensor nodes. As piezoelectric uni-morph cantilever structure can transfer low vibration to large displacement, this structure was commonly deployed to harvest electric energy from vibrations. Through our previous results, when stress was applied on the cantilever, stress was concentrated on the certain point of the ceramic of the cantilever. In this study, for miniaturing the energy harvester, we investigated how the size of ceramics and the stress distribution in ceramic affects energy harvester characteristics. Even though the area of ceramic was 28.6 % decreased from 10 ×35×0.5 mm3 to 10 ×25 ×0.5 mm3, both samples showed almost same maximum power of 0.45 mW and the electro-mechanical coupling factor (k31) of 14 % as well. This result indicated that should be preferentially considered to generate high power with small size energy harvester. Korean 한국센서학회 소형 압전 에너지 하베스터 구현을 위한 세라믹 크기 변화 Investigation of piezoelectric ceramic size effect for miniaturing the piezoelectric energy harvester Article 2 센서학회지, v.17, no.4, pp.267 - 272 센서학회지 17 4 267 272 kci ART001267704 energy harvesting piezoelectric cantilever