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Mechanoluminescence induced by acoustic cavitation

Eddingsaas, N. C. and Suslick, K. S. (2010) Mechanoluminescence induced by acoustic cavitation. In: International Chemical Congress of Pacific Basin Societies (Pacifichem 2010), December 15-20, 2010, Honolulu, HI. http://resolver.caltech.edu/CaltechAUTHORS:20120816-131436515

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Abstract

When a liq. is irradiated with high intensity ultrasound, micron-sized bubbles can be driven into violent collapse with a subsequent shockwave formed in the liq. from the bubble rebound. Small particles suspended in ultrasonically irradiated liqs. can be accelerated to high velocities (several hundred m/s) by these shockwaves and undergo violent interparticle collisions. Under these conditions we have obsd. intense mechanoluminescence from a variety of org. microcryst. solids. We have studied the effects of liq. properties as well as crystal properties to obtain the most intense mechanoluminescence. Using optical emission spectroscopy of at. and mol. species we have characterized the electron d., electron temp., pressure, and temp. of the resulting discharge.


Item Type:Conference or Workshop Item (Paper)
Additional Information:© 2012 American Chemical Society.
Record Number:CaltechAUTHORS:20120816-131436515
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120816-131436515
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:33271
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 Aug 2012 21:09
Last Modified:16 Aug 2012 21:09

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