改善PDMS铁驻极体PTFE涂层的电荷稳定性

2019 19th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS) Pub Date : 2019-12-01 DOI:10.1109/PowerMEMS49317.2019.30773705679

M. Zhang, J. Shi, S. Beeby

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引用次数: 0

摘要

以往的聚二甲基硅氧烷(PDMS)铁驻极体的电荷耗散现象得到了观察，大多数样品的压电系数d33在充电后一个月内降至10 pC/N以下。这个问题限制了它的长期能量收集性能。提出了一种在PDMS表面涂覆聚四氟乙烯(PTFE)以提高铁驻极体表面电荷稳定性的方法。在PDMS铁驻极体的空隙表面涂覆一层PTFE薄膜后，得到的压电系数d33在6个月后仍保持在80 pC/N。

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Improved charge stability in PTFE coatings for PDMS ferroelectrets

Charge dissipation in previous Polydimethylsiloxane (PDMS) ferroelectrets was observed and the piezoelectric coefficient d33 of most samples drop to below 10 pC/N in one month after charging. This issue limits its long-term energy harvesting performance. This paper presents an approach to coat the PDMS with Polytetrafluoroethylene (PTFE) to enhance the surface charge stability of the ferroelectret. After coating a thin PTFE film in the void surfaces of PDMS ferroelectret, the piezoelectric coefficient d33 obtained remained at 80 pC/N after 6 months.

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2019 19th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS)

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