Trap of a Submicron Particle in a Quadrupole Acoustic Chamber

We investigate analytically and numerically trapping of submicron aerosol particles in a three-dimensional quadrupole acoustic chamber having hyperbolical configuration. The particle trajectories are described by the Langevin equation accounting for particle random Brownian motion. The particle trap...

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Bibliographic Details
Published in:Particulate science and technology 2011-09, Vol.29 (5), p.450-465
Main Authors: Vainshtein, P., Shapiro, M.
Format: Article
Language:English
Subjects:
Acoustics
aerosol
Aerosols
Brownian motion
chamber
Chambers
Diffusion
Mathematical analysis
Mathematical models
Numerical analysis
particle
Particle trajectories
Quadrupoles
trap
Trapping
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Summary:We investigate analytically and numerically trapping of submicron aerosol particles in a three-dimensional quadrupole acoustic chamber having hyperbolical configuration. The particle trajectories are described by the Langevin equation accounting for particle random Brownian motion. The particle trapping efficiency is investigated for a range of acoustic field parameters and particle properties. It is shown that submicron diffusive particles can be trapped in a small region near the chamber center. The effect of Brownian motion is to broaden the trapping region. The dimensions of the trapping region can be reduced by increasing the acoustic strength parameter.
ISSN:0272-6351
1548-0046
DOI:10.1080/02726351.2010.510167