INOE 2000 - Low-frequency ultrasonic piezoceramic sandwich transducer

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We are the National R&D Institute for Optoelectronics.

The Institute comprises six research departments, two certified test laboratories and two legal subsidiaries: the Institute of Analytical Instrumentation Research - ICIA (http://www.icia.ro) and the Hydraulics and Pneumatics Research Institute – IHP ( http://www.ihp.ro)..

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The Institute develops fundamental and applicative research in optoelectronics, analytical chemistry and mechanical engineering, aligning itself to the vital scientific directions of the European Research Area.

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INOE is committed to moving forward, to reshape the multi‐disciplinary approach into a crossdisciplinary research, targeting more closely the optoelectronics domain, taking a step forward in the physical engineering field of optoelectronics.

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M.Wevers, J.Lafaut, L.Baert, I.Chilibon, Low-frequency ultrasonic piezoceramic sandwich transducer, Sensors and Actuators A: Physical, 122/2 (2005) 284-289

Title: Low-frequency ultrasonic piezoceramic sandwich transducer

Abstract: This paper presents an ultrasonic piezoceramic sandwich transducer (UPST), utilised for ultrasonic field generation in water and cavitational effect achievement. This device will be used to produce enlargement of the bubbles, initiated by the incident shock wave on the calculus in the lithotripsy process. The piezoceramic sandwich transducer powered by a function/pulse generator type IWATSU SG-4511 converts the electrical signal in mechanical vibrations, which are propagated in water. A PZT disc sensor converts the underwater waves in electrical signals, displayed by LeCroy 9310 AM oscilloscope. The purpose was to realise an ultrasonic piezoceramic sandwich transducer with low resonance frequency, tuneable energy and broad bandwidth. The UPST transducer, integrated to an ESWL electromagnetic lithotripter, yields enhancement of the cavitation effects, utilised in the comminution of kidney stones.

Key words: ultrasonic; piezoceramic; sandwich transducer; underwater; UPST

Research units and subsidiaries

The Institute comprises six research departments and two branches.

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RADO

Departamentul Remote Sensing (RADO)

Cercetare si dezvoltare tehnologica pentru obtinerea si gestionarea informatiilor despre mediu
ITC

Departamentul Inginerie Tehnologica si Constructiva, Laseri si Comunicatii prin Fibre Optice (ITC)

Constructia si integrarea laserilor si echipamentelor optice pentru imbunatatirea claitatii vietii in toate formele ei
CERTO

Departamentul Metode si Tehnici Optoelectronice de Reabilitare si Conservare a Patrimoniului Cultural (CERTO)

Cercetare si tehnici avansate de monitorizare conservare si restaurare a operelor de arta
RECAST

Departamentul Sisteme si tehnologii bazate pe plasma si vid pentru noi materiale avansate nanostructurate (RECAST)

Cercetari in sfera tratarii suprafetelo cu plasma si ioni si a tehnologiilor tip ultrahigh vacuum (UHV)
OPTOSPINTRONICA

Departamentul Optospintronica
OMBA

Colectiv Metode Optoelectronice cu Aplicatii Biomedicale (OMBA)
IHP

Institutul de Cercetare pentru hidraulica si pneumatica Bucuresti (IHP)
ICIA

Institutul de Cercetări pentru Instrumentație Analitică (ICIA)