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Spreading and atomization of droplets on a vibrating surface in a standing pressure field

Deepu, P and Basu, Saptarshi and Saha, Abhishek and Kumar, Ranganathan (2012) Spreading and atomization of droplets on a vibrating surface in a standing pressure field. In: Applied Physics Letters, 101 (14). pp. 143108-1.

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Official URL: http://dx.doi.org/10.1063/1.4757567


We report the first observation and analytical model of deformation and spreading of droplets on a vibrating surface under the influence of an ultrasonic standing pressure field. The standing wave allows the droplet to spread, and the spreading rate varies inversely with viscosity. In low viscosity droplets, the synergistic effect of radial acoustic force and the transducer surface acceleration also leads to capillary waves. These unstable capillary modes grow to cause ultimate disintegration into daughter droplets. We find that using nanosuspensions, spreading and disintegration can be prevented by suppressing the development of capillary modes and subsequent break-up. (C) 2012 American Institute of Physics. http://dx.doi.org/10.1063/1.4757567]

Item Type: Journal Article
Publication: Applied Physics Letters
Publisher: American Institute of Physics
Additional Information: Copyright of this article belongs to American Institute of Physics.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 20 Feb 2013 08:49
Last Modified: 31 Jan 2019 08:51
URI: http://eprints.iisc.ac.in/id/eprint/45388

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