The Proceedings of the Thermal Engineering Conference
Online ISSN : 2424-290X
2020
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Measurement of Molecule Alignment in Liquid-Crystal-Enhanced Electret Vibration Energy Harvester
Kasidis KittipaisalsilpaTomoya MiyoshiTakashi KatoYuji Suzuki
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Pages 0163-

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Abstract

In this paper, quantitative measurements of liquid crystal (LC) alignment inside an operating electret-based vibration energy harvester is reported for the first time. Instantaneous LC alignment inside operating vibration energy harvester elucidates the direct effect of LC on its capacitance change, leading to more accurate electrical model of the harvester. Electret vibration generator filled with LC is installed in an environmental chamber with an optical window, in such a way that instantaneous LC alignment of operating generator is measured with an inverted polarized optical microscope (POM) equipped with a high-speed camera.

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© 2020 The Japan Society of Mechanical Engineers
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