Improving an electret transducer by fully utilizing the implanted charge

Hiroshi Okamoto; Teppei Onuki; Hiroki Kuwano

doi:10.1063/1.2985899

Improving an electret transducer by fully utilizing the implanted charge

Hiroshi Okamoto, Teppei Onuki, Hiroki Kuwano

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Most of the countercharge in the conventional electret-based electromechanical transducer, where the electret is formed on a conducting or semiconducting substrate, is induced in the substrate. Here we introduce a type of electret transducer that contains a freestanding electret without a conducting substrate, thereby enhancing the electric field between the electret and the electrodes where the output current is generated. A measurement of the power output from an electromechanical transducer yielded approximately five times larger power when a freestanding electret film was used than when the same electret material was deposited on a conducting substrate.

Original language	English
Article number	122901
Journal	Applied Physics Letters
Volume	93
Issue number	12
DOIs	https://doi.org/10.1063/1.2985899
Publication status	Published - 2008 Oct 6

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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