Droplet displacements and oscillations induced by ultrasonic surface acoustic waves: A quantitative study
- 18 March 2010
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review E
- Vol. 81 (3), 036315
- https://doi.org/10.1103/physreve.81.036315
Abstract
We present an experimental study of a droplet interacting with an ultrasonic surface acoustic wave. Depending on the amplitude of the wave, the drop can either experience an internal flow with its contact line pinned, or (at higher amplitude) move along the direction of the wave also with internal flow. Both situations come with oscillations of the drop free surface. The physical origins of the internal mixing flow as well as the drop displacement and surface waves are still not well understood. In order to give insights of the underlying physics involved in these phenomena, we carried out an experimental and numerical study. The results suggest that the surface deformation of the drop can be related to a combination between acoustic streaming effect and radiation pressure inside the drop. DOI: http://dx.doi.org/10.1103/PhysRevE.81.036315 © 2010 The American Physical SocietyKeywords
This publication has 24 references indexed in Scilit:
- Wetting and spreadingReviews of Modern Physics, 2009
- Lateral vibration of a water drop and its motion on a vibrating surfaceThe European Physical Journal E, 2006
- Performance limits of nanobiosensorsApplied Physics Letters, 2006
- Marangoni Effect Reverses Coffee-Ring DepositionsThe Journal of Physical Chemistry B, 2006
- Contact Line Deposits on cDNA Microarrays: A “Twin-Spot Effect”Langmuir, 2002
- Pattern formation in drying dropsPhysical Review E, 2000
- Capillary flow as the cause of ring stains from dried liquid dropsNature, 1997
- Using Vibrational Noise To Probe Energy Barriers Producing Contact Angle HysteresisLangmuir, 1996
- Average Spreading Parameter on Heterogeneous SurfacesLangmuir, 1994
- On the ability of drops or bubbles to stick to non-horizontal surfaces of solidsJournal of Fluid Mechanics, 1983