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Nonlinear electromechanical response of the ferroelectret ultrasonic transducers
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SYSNO ASEP 0352399 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nonlinear electromechanical response of the ferroelectret ultrasonic transducers Author(s) Döring, J. (DE)
Bovtun, Viktor (FZU-D) RID, ORCID, SAI
Bartusch, J. (DE)
Erhard, A. (DE)
Kreutzbruck, M. (DE)
Yakymenko, Y. (UA)Source Title Applied Physics A - Materials Science & Processing. - : Springer - ISSN 0947-8396
Roč. 100, č. 2 (2010), 479-485Number of pages 7 s. Language eng - English Country DE - Germany Keywords piezoelectric ; ferroelectret ; transducer ; ultrasonic Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GAP204/10/0616 GA ČR - Czech Science Foundation (CSF) GA202/09/0682 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z10100520 - FZU-D (2005-2011) UT WOS 000280556600026 DOI 10.1007/s00339-010-5752-7 Annotation The ultrasonic transmission between two aircoupled polypropylene (PP) ferroelectret (FE) transducers in dependence on the amplitude of the high-voltage exciting pulse revealed a strongly nonlinear electromechanical response of the FE transmitter. This phenomenon is described by a linear increase of the inverse electromechanical transducer constant of the PP FE film with an increase of the exciting electrical pulse amplitude (by a factor of 4). The electrostriction contribution can be attributed to the electrostatic force between electrodes and the Maxwell stress effect. A significant enhancement of the ACUS system transmission (12 dB) and signal-to-noise ratio (32 dB) was demonstrated by the increase of excitation voltage up to 3500 V. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2011
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