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| Reasearch on Preparation and Application of Multilayer Discarded Grape Skin Piezoelectric Films |
| Received:May 18, 2025 Revised:June 20, 2025 |
| DOI：10.11981/j.issn.1000-6842.2026.01.81 |
| Key Words:bio-based piezoelectric film;laminated structure;piezoelectric effect;sensitivity;flexible sensor |
| Fund Project:浙江省自然科学基金（Y24E020055）；湖州市科技项目（2024GZ164）。 |
| Author Name | Affiliation | Postcode | | WANG Xiying* | School of Intelligent Manufacturing， Huzhou College， Huzhou， Zhejiang Province， 313000 | 313000 | | ZHANG Lina* | School of Intelligent Manufacturing， Huzhou College， Huzhou， Zhejiang Province， 313000 | 313000 | | WANG Jue | School of Intelligent Manufacturing， Huzhou College， Huzhou， Zhejiang Province， 313000 | 313000 | | LUO Pei | School of Intelligent Manufacturing， Huzhou College， Huzhou， Zhejiang Province， 313000 | 313000 | | XU Shunjian | School of Intelligent Manufacturing， Huzhou College， Huzhou， Zhejiang Province， 313000 | 313000 |
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| Abstract: |
| This study utilized grape skins， an agricultural waste material， to prepare novel bio-based piezoelectric films. After composited with PEN-ITO conductive films， multilayer grape skin piezoelectric film sensors with a ‘sandwich’ structure were fabricated， exhibiting stable voltage output under mechanical stress. The double-layer grape skin piezoelectric film sensor achieved the highest sensitivity （42 mV/N）， representing a 133% increase compared to the single-layer sensor （18 mV/N） and a 100% increase compared to the triple-layer sensor （21 mV/N）. Furthermore， the double-layer grape skin piezoelectric film sensor exhibited excellent linear correlation between voltage and current （R² > 0.976）. For applications in human motion monitoring， micro-energy harvesting， and acoustic detection， the layered-structure flexible sensor demonstrated excellent adaptability. |
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