Increasing Energy-harvesting ability of piezoelectric unimorph cantilevers using Spring Supports
- Authors
- Kim, Kyung Bum; Nahm, San; Sung, Tae Hyun; Paik, Jong Hoo; Kim, Hyoung Jae
- Issue Date
- Jun-2016
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Piezoelectric; Energy-harvesting; Spring; Unimorph Cantilevers
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.68, no.11, pp.1262 - 1266
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 68
- Number
- 11
- Start Page
- 1262
- End Page
- 1266
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/154557
- DOI
- 10.3938/jkps.68.1262
- ISSN
- 0374-4884
- Abstract
- We fabricated a spring-supported piezoelectric unimorph cantilever (SPUC) with enhanced energy-harvesting characteristics by using a 0.69Pb(Zr0.47Ti0.53)O3–0.31Pb(Ni0.6Zn0.4)1/3Nb2/3)O3 + CuO (0.5 mol%) thick film sintered at 950 °C; a spring having a spring constant of 14,320 N/m was used as the cantilever support. The SPUC could generate an output power as high as 29 mW with a spring constant of 14,320 N/m across a resistance of 150 kΩ; this corresponded to a power density of 34 mW/cm3. We, therefore, that the thus-fabricated SPUCs when supported by a spring can harvest increased levels of energy.
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