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 |
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Article number | 122901 |
Journal | Applied Physics Letters |
Volume | 93 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2008 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)