Spatial Distribution Enhancement of Sonoluminescence Activity by Altering Sonication and Solution Conditions
- 11 November 2008
- journal article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry B
- Vol. 112 (48), 15333-15341
- https://doi.org/10.1021/jp8060224
Abstract
An intensified charge-couped device (CCD) camera was used to capture raw images of multibubble sonoluminescence, generated by 168 and 448 kHz ultrasound. The effect of various air and surfactant concentrations, and pulse conditions on the acoustic pressure distribution, percentage of standing wave component, the structure of the sonoluminescence activity, and speed of streaming was investigated. It was observed that the enhancement in the sonoluminescence intensity by appropriate degassing, pulsing, and addition of sodium dodecylsulfate were closely related to an expansion in the spatial distribution of sonoluminescence activity. This broadening in the spatial distribution is correlated with a high percentage of standing wave component. This effect stems from the reduction in the attenuation of the acoustic field by inhibiting the formation of large coalesced bubbles.Keywords
This publication has 37 references indexed in Scilit:
- Correlation between Na* Emission and “Chemically Active” Acoustic Cavitation BubblesChemphyschem, 2007
- Spatial study on a multibubble system for sonochemistry by laser-light scatteringUltrasonics Sonochemistry, 2005
- Difference in Threshold between Sono- and Sonochemical LuminescenceJapanese Journal of Applied Physics, 2000
- Emulsification by ultrasound: drop size distribution and stabilityUltrasonics Sonochemistry, 1999
- Electrochemical determination of the active zones in a high-frequency ultrasonic reactorUltrasonics Sonochemistry, 1996
- Luminescence and chemical action by pulsed ultrasoundJournal of the American Chemical Society, 1989
- Studies of the cavitational effects of clinical ultrasound by sonoluminescence: 1. Correlation of sonoluminescence with the standing wave pattern in an acoustic field produced by a therapeutic unitPhysics in Medicine & Biology, 1988
- BUBBLE COALESCENCE IN STAGNANT LIQUIDSChemical Engineering Communications, 1986
- Sonoluminescence produced by ‘‘stable’’ cavitationThe Journal of the Acoustical Society of America, 1985
- Measurements of the growth of air bubbles by rectified diffusionThe Journal of the Acoustical Society of America, 1980