Enhanced electromechanical response of ferroelectret ultrasonic transducers under high voltage excitation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F13%3A00426511" target="_blank" >RIV/68378271:_____/13:00426511 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1179/1743676112Y.0000000021" target="_blank" >http://dx.doi.org/10.1179/1743676112Y.0000000021</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1179/1743676112Y.0000000021" target="_blank" >10.1179/1743676112Y.0000000021</a>

Result language

angličtina

Original language name

Enhanced electromechanical response of ferroelectret ultrasonic transducers under high voltage excitation

Original language description

Polypropylene based ferroelectret films exhibit a strong electromechanical activity and provide a promising solution for the air coupled ultrasonic (ACUS) transducers. Ultrasonic transmission between two air coupled ferroelectret transducers in dependence on the amplitude and polarity of the high voltage exciting pulse revealed a strongly non-linear electromechanical response of the ferroelectret transmitter which provides an increase in the transmitter efficiency. Enlargement of the inverse transducerconstant of the polypropylene ferroelectret film by a factor of 4 was demonstrated. The non-linear properties of the polypropylene ferroelectrets result in a strong increase in their ACUS figure of merit under the high voltage excitation, which exceeds the results of their technological optimisation. Consequently, enhancement of the ACUS system transmission by 12 dB and signal to noise ratio by 32 dB was achieved.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

—

Project

<a href="/en/project/GAP204%2F10%2F0616" target="_blank" >GAP204/10/0616: Modern piezoelectric perovskites: lattice vibrations and domain walls</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Advances in Applied Ceramics

ISSN

1743-6753

e-ISSN

—

Volume of the periodical

112

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

6

Pages from-to

97-102

UT code for WoS article

000316113800007

EID of the result in the Scopus database

—