Relocation of coflowing immiscible liquids under acoustic field in a microchannel
(2019) In EPL 125(5).- Abstract
We report the dynamics of coflowing immiscible liquid streams exposed to an acoustic standing wave in a microchannel. Relocation of the liquid streams is experimentally demonstrated and a theoretical model that explains the underlying phenomena is presented. Our experiments and theoretical model suggest that the relocation phenomena are governed by the interplay between the primary acoustic radiation force F ac and the interfacial tension force F int-which is represented in terms of a new dimensionless number called "acoustocapillary number", . Using various combinations of immiscible liquids, we show that relocation of the higher acoustic impedance liquid stream to the pressure node occurs above a critical... (More)
We report the dynamics of coflowing immiscible liquid streams exposed to an acoustic standing wave in a microchannel. Relocation of the liquid streams is experimentally demonstrated and a theoretical model that explains the underlying phenomena is presented. Our experiments and theoretical model suggest that the relocation phenomena are governed by the interplay between the primary acoustic radiation force F ac and the interfacial tension force F int-which is represented in terms of a new dimensionless number called "acoustocapillary number", . Using various combinations of immiscible liquids, we show that relocation of the higher acoustic impedance liquid stream to the pressure node occurs above a critical acoustocapillary number . The understanding of the above phenomena provides a new paradigm related to the manipulation of immiscible liquids under acoustic field.
(Less)
- author
- Hemachandran, E. ; Karthick, S. ; Laurell, T. LU and Sen, A. K.
- organization
- publishing date
- 2019-04-15
- type
- Contribution to journal
- publication status
- published
- subject
- in
- EPL
- volume
- 125
- issue
- 5
- article number
- 54002
- publisher
- EDP Sciences
- external identifiers
-
- scopus:85066328035
- ISSN
- 1286-4854
- DOI
- 10.1209/0295-5075/125/54002
- language
- English
- LU publication?
- yes
- id
- 7bdff27b-2b8d-4651-8d71-fb4c3823b9b7
- date added to LUP
- 2019-06-13 10:39:22
- date last changed
- 2022-05-03 22:18:14
@article{7bdff27b-2b8d-4651-8d71-fb4c3823b9b7,
abstract = {{<p>We report the dynamics of coflowing immiscible liquid streams exposed to an acoustic standing wave in a microchannel. Relocation of the liquid streams is experimentally demonstrated and a theoretical model that explains the underlying phenomena is presented. Our experiments and theoretical model suggest that the relocation phenomena are governed by the interplay between the primary acoustic radiation force F <sub>ac</sub> and the interfacial tension force F <sub>int</sub>-which is represented in terms of a new dimensionless number called "acoustocapillary number", . Using various combinations of immiscible liquids, we show that relocation of the higher acoustic impedance liquid stream to the pressure node occurs above a critical acoustocapillary number . The understanding of the above phenomena provides a new paradigm related to the manipulation of immiscible liquids under acoustic field.</p>}},
author = {{Hemachandran, E. and Karthick, S. and Laurell, T. and Sen, A. K.}},
issn = {{1286-4854}},
language = {{eng}},
month = {{04}},
number = {{5}},
publisher = {{EDP Sciences}},
series = {{EPL}},
title = {{Relocation of coflowing immiscible liquids under acoustic field in a microchannel}},
url = {{http://dx.doi.org/10.1209/0295-5075/125/54002}},
doi = {{10.1209/0295-5075/125/54002}},
volume = {{125}},
year = {{2019}},
}