Title

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

Authors

Authors

P. Deepu; S. Basu; A. Saha;R. Kumar

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

HEAT-TRANSFER; NANOFLUIDS; VISCOSITY; Physics, Applied

Abstract

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]

Journal Title

Applied Physics Letters

Volume

101

Issue/Number

14

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

5

WOS Identifier

WOS:000309603300083

ISSN

0003-6951

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