Flexible Two-ply Piezoelectric Yarn Energy Harvester
- Authors
- Sim, Hyeon Jun; Choi, Changsoon; Lee, Chang Jun; Kim, Youn Tae; Kim, Seon Jeong
- Issue Date
- Aug-2015
- Publisher
- BENTHAM SCIENCE PUBL LTD
- Keywords
- Energy harvester; Flexible; Piezoelectric; Two-ply; Wearable; Yarn
- Citation
- CURRENT NANOSCIENCE, v.11, no.4, pp.539 - 544
- Indexed
- SCIE
SCOPUS
- Journal Title
- CURRENT NANOSCIENCE
- Volume
- 11
- Number
- 4
- Start Page
- 539
- End Page
- 544
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/24903
- DOI
- 10.2174/1573413711666150225231434
- ISSN
- 1573-4137
- Abstract
- We developed a flexible two-ply piezoelectric yarn-type generator using an electrospun polyvinylidenefluoride-co- trifluoroethylene (PVDF-TrFE) mat and a commercially available silver-coated nylon fiber. By rolling the silver-coated nylon fiber into the electrospun PVDF-TrFE mat as the inner electrode, the two-dimensional piezoelectric PVDF-TrFE mat was easily transformed into a one-dimensional fiber. Then silver-coated nylon fiber rolled in PVDF-TrFE was plied with another similar fiber to make a flexible two-ply piezoelectric yarn. The overall fabrication processes of the flexible two-ply piezoelectric yarn are simple and have a high application potential. The flexible two-ply piezoelectric yarn can generate up to 0.7 V in compression and 0.55 V in tension. The yarn retained the piezoelectric performance in various shapes, such as a sewn structure. In addition, the piezoelectric performance was sensitive to velocity and pressure. The flexible two-ply piezoelectric yarn has potential applications as a human motion sensor, as a building block of energy- harvesting textiles, and in self-powered biomedical applications.
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