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Characterization of HIFU transducers designed for sonochemistry application: Cavitation distribution and quantification

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    0336679 - UFCH-W 2011 RIV NL eng J - Journal Article
    Hallez, L. - Touyeraz, F. - Hihn, J. Y. - Klíma, Jiří - Guey, J.-L. - Spajer, M. - Bailly, Y.
    Characterization of HIFU transducers designed for sonochemistry application: Cavitation distribution and quantification.
    Ultrasonics. Roč. 50, č. 2 (2010), s. 310-317. ISSN 0041-624X
    Institutional research plan: CEZ:AV0Z40400503
    Keywords : HIFU * acoustic cavitation * MBSCL threshold * sonoreactors
    Subject RIV: CG - Electrochemistry
    Impact factor: 1.599, year: 2010

    Acoustic field distribution was determined in HIFU sonoreactors as well as localization of cavitation activity by crossing different techniques: modeling, hydrophone measurements, laser tomography and SCL measurements. Particular care was taken with quanti. cation of this last technique by pixels or photon counting. Cavitation bubbles generated by HIFU are mainly located on the outer layer of the propagation cone in the post-focal zone. Greatest acoustic activity is not located at the geometrical focal, but corresponds to a high concentration of bubbles zone. On the contrary, the main sonochemical activity shifts slightly toward the transducer, whereas quenching of inertial cavitation is observed directly at the focal. Finally, SCL thresholds have been determined.
    Permanent Link: http://hdl.handle.net/11104/0180864