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Proceedings Paper

Ferroelectric-like behavior in nonpolar cellular electrets
Author(s): Michael Lindner; Simona Bauer-Gogonea; Siegfried Bauer
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Paper Abstract

Cellular space-charge electrets have emerged as a new class of materials for electromechanical devices, offering a huge potential for applications in noise reduction or cancellation, non-intrusive surveillance, advanced monitoring in health care, as well as in non-destructive testing. Here we report on piezoelectric responses in sandwich structures of two dielectric films separated by an air-gap of a few micrometer thickness. The sandwich structure is charged by dielectric barrier microdischarges within the air-gap. Wide ranging similarities to ferroelectric materials are demonstrated, like hysteresis loops in the dielectric and electromechanical properties versus applied voltage. Applications may emerge in electrostatic microelectromechanical devices.

Paper Details

Date Published: 11 March 2003
PDF: 6 pages
Proc. SPIE 4946, Transducing Materials and Devices, (11 March 2003); doi: 10.1117/12.468257
Show Author Affiliations
Michael Lindner, Johannes Kepler Univ. (Austria)
Simona Bauer-Gogonea, Johannes Kepler Univ. (Austria)
Siegfried Bauer, Johannes Kepler Univ. (Austria)


Published in SPIE Proceedings Vol. 4946:
Transducing Materials and Devices

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