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Acoustic Nanoparticle Trapping Is Driven by Synergy between Acoustic and Hydrodynamic Interactions

Pavlič, Alen and Baasch, Thierry LU (2025) In Physical Review Letters 135(18).
Abstract

Acoustic forces occurring in resonant microfluidic chambers allow the handling of micrometer-sized particles. Trapping of nanoparticles has been shown for high particle concentrations and after preseeding the chamber with larger particles. We show that the trapping mechanism is due to synergy between hydrodynamic shielding and acoustic forces. Acoustic interactions are significant only when seed particles are involved and are negligible when trapping monodisperse particles. Density-selective nanoparticle trapping is suggested based on the numerical results.

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 Letters
volume
135
issue
18
article number
187201
publisher
American Physical Society
external identifiers
  • scopus:105022231733
  • pmid:41247963
ISSN
0031-9007
DOI
10.1103/6l7z-bjzy
language
English
LU publication?
yes
id
dd4477f1-c067-427f-aef1-5bc4a744242d
date added to LUP
2026-01-30 15:25:15
date last changed
2026-01-30 15:25:49
@article{dd4477f1-c067-427f-aef1-5bc4a744242d,
  abstract     = {{<p>Acoustic forces occurring in resonant microfluidic chambers allow the handling of micrometer-sized particles. Trapping of nanoparticles has been shown for high particle concentrations and after preseeding the chamber with larger particles. We show that the trapping mechanism is due to synergy between hydrodynamic shielding and acoustic forces. Acoustic interactions are significant only when seed particles are involved and are negligible when trapping monodisperse particles. Density-selective nanoparticle trapping is suggested based on the numerical results.</p>}},
  author       = {{Pavlič, Alen and Baasch, Thierry}},
  issn         = {{0031-9007}},
  language     = {{eng}},
  number       = {{18}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Acoustic Nanoparticle Trapping Is Driven by Synergy between Acoustic and Hydrodynamic Interactions}},
  url          = {{http://dx.doi.org/10.1103/6l7z-bjzy}},
  doi          = {{10.1103/6l7z-bjzy}},
  volume       = {{135}},
  year         = {{2025}},
}