Piezoelectric and electrostrictive effects in ferroelectret ultrasonic transducers
- Electromechanical response of polypropylene ferroelectret transducers under application of high-voltage pulses was measured by laser Doppler vibrometry and compared with results of ultrasonic through-air transmission between two ferroelectret transducers. The electromechanical response was completely explained by piezoelectric and electrostrictive effects. The electrostrictive effect dominates at high voltages and provides significant enlargement of the transducer constant, up to factor of 2.5. The induced strain of 1.7% was achieved at – 2000 V. The nonlinear ultrasonic transmission was shown to be well described by the piezoelectric and electrostrictive response of transmitter, except in the range of high negative exciting voltages where some limitation of the transmitted signal was observed. This limitation seems not to be a fundamental one and does not abolish the advantages of high-voltage excitation of polypropylene ferroelectret transducers.
Autor*innen: | Joachim Döring, V. Bovtun, Mate GaalORCiD, Jürgen Bartusch, Anton Erhard, Marc Kreutzbruck, Y. Yakymenko |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Journal of applied physics |
Jahr der Erstveröffentlichung: | 2012 |
Verlag: | American Institute of Physics |
Verlagsort: | Melville, NY |
Jahrgang/Band: | 112 |
Ausgabe/Heft: | 8 |
Erste Seite: | 084505-1 - 084505-6 |
Freie Schlagwörter: | Cellular polypropylene; Electromechanical effects; Electrostriction; Ferroelectret; Ferroelectric devices; Piezoelectric transducers; Piezoelectricity; Ultrasonic transducers; Ultrasonic transmission |
DOI: | 10.1063/1.4759052 |
ISSN: | 0021-8979 |
ISSN: | 1089-7550 |
Verfügbarkeit des Dokuments: | Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access") |
Bibliotheksstandort: | Sonderstandort: Publica-Schrank |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 25.10.2012 |