Controlled surface wrinkling as a novel strategy for the compressibility-tunable PZT film-based energy harvesting system

Using a controlled surface wrinkling strategy, we designed a flexible energy harvesting system made from a compliant substrate, stiff skin layer, a thin PZT film, and an interdigitated electrode sandwich structure. This energy harvesting system, which operates under compressing and releasing operati...

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Bibliographic Details
Published in:Extreme Mechanics Letters 2021-01, Vol.42, p.101102, Article 101102
Main Authors: Xue, Zhiming, Wang, Changguo, Tan, Huifeng
Format: Article
Language:English
Subjects:
Compressibility
Controlled surface instability
Energy harvesting system
Piezopotential
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Summary:Using a controlled surface wrinkling strategy, we designed a flexible energy harvesting system made from a compliant substrate, stiff skin layer, a thin PZT film, and an interdigitated electrode sandwich structure. This energy harvesting system, which operates under compressing and releasing operating modes that are common in nature and engineering, accommodates orders-of-magnitude increases in maximum compressive strain without fracture. This increased range allows the system to be used for more applications. We systematically explored the effects of different parameters on system compressibility and piezopotential output performance. These analytical results guide the design for enhancing compressibility or piezopotentials of the energy harvesting system.
ISSN:2352-4316
2352-4316
DOI:10.1016/j.eml.2020.101102