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Abstract:
An acoustic radiation force counterbalanced appliance was employed to map the cavitation distribution in water. The appliance was made up of a focused ultrasound transducer and an aluminum alloy reflector with the exactly same shape. They were centrosymmetry around the focus of the source transducer. Spatial-temporal dynamics of cavitation bubble clouds in the 1.2 MHz ultrasonic field within this appliance were observed in water. And they were mapped by sonochemiluminescence (SCL) recordings and high-speed photography. There were significant differences in spatial distribution and temporal evolution between normal group and counterbalanced group. The reflector could avoid bubble directional displacement induced by acoustic radiation force under certain electric power (<= 50 W). As a result, the SCL intensity in the pre-focal region was larger than that of normal group. In event of high electric power (>= 70 W), most of the bubbles were moving in acoustic streaming. When electric power decreased, bubbles kept stable and showed stripe structure in SCL images. Both stationary bubbles and moving bubbles have been captured, and exhibited analytical potential with respect to bubbles in therapeutic ultrasound. (C) 2013 Elsevier B.V. All rights reserved.
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ULTRASONICS SONOCHEMISTRY
ISSN: 1350-4177
Year: 2014
Issue: 2
Volume: 21
Page: 559-565
4 . 3 2 1
JCR@2014
7 . 4 9 1
JCR@2020
ESI Discipline: CHEMISTRY;
ESI HC Threshold:221
JCR Journal Grade:2
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 11
SCOPUS Cited Count: 13
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
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