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Increasing Energy-harvesting ability of piezoelectric unimorph cantilevers using Spring Supports

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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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Authors and Affiliations

  1. Department of Materials Science and Engineering, Korea University, Seoul, 02841, Korea

    Kyung Bum Kim & San Nahm

  2. Department of Electrical Engineering, Hanyang University, Seoul, 04763, Korea

    Tae Hyun Sung

  3. Electronic and Material Ceramics Division, Korea Institute of Ceramic Engineering and Technology, Seoul, 08516, Korea

    Jong Hoo Paik

  4. Dongnam Division, Korea Institute of Industrial Technology, Busan, 46742, Korea

    Hyoung Jae Kim

Authors
  1. Kyung Bum Kim
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  2. San Nahm
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  3. Tae Hyun Sung
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  4. Jong Hoo Paik
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  5. Hyoung Jae Kim
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Kim, K.B., Nahm, S., Sung, T.H. et al. Increasing Energy-harvesting ability of piezoelectric unimorph cantilevers using Spring Supports. Journal of the Korean Physical Society 68, 1262–1266 (2016). https://doi.org/10.3938/jkps.68.1262

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  • DOI: https://doi.org/10.3938/jkps.68.1262

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