Enhanced electromechanical response of ferroelectret ultrasonic transducers under high voltage excitation

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhanced electromechanical response of ferroelectret ultrasonic transducers under high voltage excitation

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Enhanced electromechanical response of ferroelectret ultrasonic transducers under high voltage excitation

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GAP204%2F10%2F0616" target="_blank" >GAP204/10/0616: Moderní pizeoelektrické perovskity: kmity krystalové mřížky a doménové stěny</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Advances in Applied Ceramics

ISSN

1743-6753

e-ISSN

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Svazek periodika

112

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

97-102

Kód UT WoS článku

000316113800007

EID výsledku v databázi Scopus

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