Influence of surface-active solutes on the coalescence, clustering, and fragmentation of acoustic bubbles confined in a microspace
Lee, J, Tuziuti, T, Yasui, K, Kentish, S, Grieser, F, Ashokkumar, M and Iida, Y (2007) Influence of surface-active solutes on the coalescence, clustering, and fragmentation of acoustic bubbles confined in a microspace The Journal of Physical Chemistry Part C, 111 (51). pp. 19015-19023.
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High-speed imaging was used to capture the effect of surface-active solutes on the behavior of acoustic bubbles, generated in a microspace using low-frequency ultrasound (60 kHz). By confining cavitation within a microspace, the dynamic behavior of bubbles, such as bubble coalescence, clustering, and fragmentation, could be observed directly. It was observed that bubbles coalesced instantly in water; however, in the presence of surface-active solutes (n-propanol and sodium dodecyl sulfate, SDS) the coalescence was hindered. Low-density bubble clusters were observed in the presence of 1 mM SDS and 0.1 M n-propanol. When 0.1 M sodium chloride was added to 1 mM SDS solution, the extent of clustering and the density of the clusters enhanced significantly; a similar observation was made at a higher SDS concentration (10 mM). The importance of these results in understanding multibubble sonoluminescence data published previously has been addressed. The collective oscillation of a bubble cluster consisting of different sized bubbles and images of bubbles emitting a fountain of microbubbles have also been presented.
|Subjects :||Chemical and Process Engineering|
|Divisions :||Faculty of Engineering and Physical Sciences > Chemical and Process Engineering|
|Date :||27 December 2007|
|Identification Number :||10.1021/jp075431j|
|Copyright Disclaimer :||Copyright © 2007 American Chemical Society|
|Uncontrolled Keywords :||Science & Technology, Physical Sciences, Technology, Chemistry, Physical, Nanoscience & Nanotechnology, Materials Science, Multidisciplinary, Chemistry, Science & Technology|
|Related URLs :|
|Depositing User :||Symplectic Elements|
|Date Deposited :||18 Aug 2016 15:14|
|Last Modified :||18 Aug 2016 15:14|
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