Piezoelectrically and triboelectrically hybridized self-powered sensor with applications to smart window and human motion detection
| Autor: | Chun Yu Chen, Shan-Chien Li, Yiin Kuen Fuh |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
lcsh:Biotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound Printed circuit board Planar Nanosensor lcsh:TP248.13-248.65 General Materials Science Triboelectric effect business.industry General Engineering Nanogenerator 021001 nanoscience & nanotechnology Polyvinylidene fluoride Piezoelectricity lcsh:QC1-999 0104 chemical sciences chemistry PMUT Optoelectronics 0210 nano-technology business lcsh:Physics |
| Zdroj: | APL Materials, Vol 5, Iss 7, Pp 074202-074202-9 (2017) |
| ISSN: | 2166-532X |
| DOI: | 10.1063/1.4978913 |
| Popis: | In this paper, we demonstrate a hybrid generator, derived from the concurrent adoption of piezoelectric and triboelectric mechanisms in one press-and-release cycle, called a Hybridized Self-Powered sensor (HSPS). A new integration of print circuit board (PCB) technology-based piezoelectric generator (PG) concurrently adopted the direct-write, near-field electrospun polyvinylidene fluoride (PVDF) nano/micro-fibers as piezoelectric source materials. On the other hand, triboelectric nanogenerators have the advantages of a high output performance with a simple structure which is also concurrently combined with the PG. The working mechanism of the HSPS includes the PCB-based substrate mounted with parallel aligned piezoelectric PVDF fibers in planar configuration which first bended and generated the electric potential via the effect of piezoelectricity. In what follows, the deformation of a cylindrical rolled-up piezoelectric structure is exercised, and finally, the triboelectric contact of Cu and PTFE layers is physically rubbed against each other with a separation to induce the triboelectric potential. This hybridized generator with a double domed shape design simultaneously combines piezoelectric output and triboelectric output and offers a built-in spacer with automatically spring back capability, which produces a peak output voltage of 100 V, a current of 4 μA, and a maximum power output of 450 nW. A self-powered smart window system was experimentally driven through finger-induced strain of HSPS, showing the optical properties with reversibly tunable transmittances. This research is a substantial advancement in the field of piezoelectric PVDF fibers integration toward the practical application of the whole self-powered system. |
| Databáze: | OpenAIRE |
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