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Interfacial Jetting Phenomena Induced by Focused Surface Vibrations

Ming K. Tan, James R. Friend, and Leslie Y. Yeo
Phys. Rev. Lett. 103, 024501 – Published 7 July 2009
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Abstract

We exploit large accelerations associated with surface acoustic waves to drive an extraordinary fluid jetting phenomena. Laterally focusing the acoustic energy to a small region beneath a drop placed on the surface causes rapid interfacial destabilization. Above a critical Weber number We, an elongated jet forms for drops with dimensions greater than the fluid sound wavelength. Further increases in We lead to single droplet pinch-off and subsequent axisymmetric breakup to form multiple droplets. A simple equation based on a momentum balance is derived to predict the jet velocity.

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  • Received 29 September 2008

DOI:https://doi.org/10.1103/PhysRevLett.103.024501

©2009 American Physical Society

Authors & Affiliations

Ming K. Tan, James R. Friend, and Leslie Y. Yeo*

  • Micro/Nanophysics Research Laboratory, Department of Mechanical Engineering, Monash University, Clayton, VIC 3800, Australia

  • *leslie.yeo@eng.monash.edu.au

See Also

Squirting Water without a Gun

Marcus Woo
Phys. Rev. Focus 24, 2 (2009)

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Issue

Vol. 103, Iss. 2 — 10 July 2009

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