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Gap Distance Between Pearl Chains in Acoustic Manipulation

Baasch, Thierry LU ; Qiu, Wei LU orcid and Laurell, Thomas LU (2022) In Physical Review Applied 18(1).
Abstract
We present a theory to compute the stable gap (interparticle) distance between particle chains collected in the pressure node of an acoustic standing wave. The primary and secondary acoustic radiation forces are the two competing forces that act on the particles during the particle chain formation. The stable equilibrium distance between two chains is reached when both forces are in balance. Most interestingly, the density scattering coefficient appears to the second power in the theoretical prediction of the gap distance, indicating that the particle-chain formation occurs for both particles heavier than the surrounding medium and, notably, also for buoyant particles. Experimentally, the gap distance is evaluated for several different... (More)
We present a theory to compute the stable gap (interparticle) distance between particle chains collected in the pressure node of an acoustic standing wave. The primary and secondary acoustic radiation forces are the two competing forces that act on the particles during the particle chain formation. The stable equilibrium distance between two chains is reached when both forces are in balance. Most interestingly, the density scattering coefficient appears to the second power in the theoretical prediction of the gap distance, indicating that the particle-chain formation occurs for both particles heavier than the surrounding medium and, notably, also for buoyant particles. Experimentally, the gap distance is evaluated for several different media and particle material combinations and the particle-chain formation is observed for both buoyant
particles and particles heavier than the surrounding medium. The theory agrees well with experiments in the cases where the material properties of the medium and the particles are well known. (Less)
Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Applied
volume
18
issue
1
article number
014021
pages
10 pages
publisher
American Physical Society
external identifiers
  • scopus:85134672268
ISSN
2331-7019
DOI
10.1103/PhysRevApplied.18.014021
language
English
LU publication?
yes
id
6b9f55d8-d49a-4ba7-b44f-36c1d9edc0ea
date added to LUP
2022-08-01 22:07:28
date last changed
2024-05-17 14:21:49
@article{6b9f55d8-d49a-4ba7-b44f-36c1d9edc0ea,
  abstract     = {{We present a theory to compute the stable gap (interparticle) distance between particle chains collected in the pressure node of an acoustic standing wave. The primary and secondary acoustic radiation forces are the two competing forces that act on the particles during the particle chain formation. The stable equilibrium distance between two chains is reached when both forces are in balance. Most interestingly, the density scattering coefficient appears to the second power in the theoretical prediction of the gap distance, indicating that the particle-chain formation occurs for both particles heavier than the surrounding medium and, notably, also for buoyant particles. Experimentally, the gap distance is evaluated for several different media and particle material combinations and the particle-chain formation is observed for both buoyant<br/>particles and particles heavier than the surrounding medium. The theory agrees well with experiments in the cases where the material properties of the medium and the particles are well known.}},
  author       = {{Baasch, Thierry and Qiu, Wei and Laurell, Thomas}},
  issn         = {{2331-7019}},
  language     = {{eng}},
  month        = {{07}},
  number       = {{1}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Applied}},
  title        = {{Gap Distance Between Pearl Chains in Acoustic Manipulation}},
  url          = {{http://dx.doi.org/10.1103/PhysRevApplied.18.014021}},
  doi          = {{10.1103/PhysRevApplied.18.014021}},
  volume       = {{18}},
  year         = {{2022}},
}