Diving with Microparticles in Acoustic Fields
Alvaro Marin, Massimiliano Rossi, Christian Kaehler
Universitat der Bundeswehr Munchen
Rune Barnkob, Peter Muller, Henrik Bruus
Technical University of Denmark
Per Augustsson, Thomas Laurell
Lund University
A popular science demonstration is to create a standing acoustic wave on a plate known as a Chladni plate. The standing wave causes minute particles to migrate to the vibration nodes, or points where the waves cancel. This video demonstrates that a similar phenomenon can occur in three dimensions for microparticles suspended in water with an imposed standing ultrasonic wave, and that by using advanced visualization techniques we can actually "dive" with the microparticles that stream in circles under the action of the acoustic waves.
Microparticles in Acoustic Fields