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Acoustic Force Density Acting on Inhomogeneous Fluids in Acoustic Fields

Karlsen, Jonas T.; Augustsson, Per LU and Bruus, Henrik (2016) In Physical Review Letters 117(11). p.114504-114504
Abstract
We present a theory for the acoustic force density acting on inhomogeneous fluids in acoustic fields on time scales that are slow compared to the acoustic oscillation period. The acoustic force density depends on gradients in the density and compressibility of the fluid. For microfluidic systems, the theory predicts a relocation of the inhomogeneities into stable field-dependent configurations, which are qualitatively different from the horizontally layered configurations due to gravity. Experimental validation is obtained by confocal imaging of aqueous solutions in a glass-silicon microchip.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
117
issue
11
pages
6 pages
publisher
American Physical Society
external identifiers
  • scopus:84988697466
  • wos:000383248700010
ISSN
1079-7114
DOI
10.1103/PhysRevLett.117.114504
language
English
LU publication?
yes
id
214191b5-3729-41aa-8966-5d0364327655
date added to LUP
2016-09-29 10:01:52
date last changed
2017-09-10 05:09:59
@article{214191b5-3729-41aa-8966-5d0364327655,
  abstract     = {We present a theory for the acoustic force density acting on inhomogeneous fluids in acoustic fields on time scales that are slow compared to the acoustic oscillation period. The acoustic force density depends on gradients in the density and compressibility of the fluid. For microfluidic systems, the theory predicts a relocation of the inhomogeneities into stable field-dependent configurations, which are qualitatively different from the horizontally layered configurations due to gravity. Experimental validation is obtained by confocal imaging of aqueous solutions in a glass-silicon microchip.},
  author       = {Karlsen, Jonas T. and Augustsson, Per and Bruus, Henrik},
  issn         = {1079-7114},
  language     = {eng},
  month        = {09},
  number       = {11},
  pages        = {114504--114504},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Acoustic Force Density Acting on Inhomogeneous Fluids in Acoustic Fields},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.117.114504},
  volume       = {117},
  year         = {2016},
}