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Taming Acoustic Cavitation
David Fernandez Rivas, Bram Verhaagen, Oscar R. Enriquez +4
In this fluid dynamics video we show acoustic cavitation occurring from pits etched on a silicon surface. By immersing the surface in a liquid, gas pockets are entrapped in the pit…
Efficient Sonochemistry through Microbubbles Generated with Micromachined Surfaces
David Fernandez Rivas, Andrea Prosperetti, Aaldert G. Zijlstra +2
Sonochemical reactors are used in water treatment, the synthesis of fine chemicals, pharmaceutics and others. The low efficiency of sonoreactors have prevented its massive usage at…
Sonoluminescence and sonochemiluminescence from a microreactor
David Fernandez Rivas, Muthupandian Ashokkumar, Thomas Leong +5
Micromachined pits on a substrate can be used to nucleate and stabilize microbubbles in a liquid exposed to an ultrasonic field. Under suitable conditions, the collapse of these bu…