Cyclones and attractive streaming generated by acoustical vortices

Riaud, Antoine; Baudoin, Michael; Thomas, Jean-Louis; Bou Matar Lacaze, Olivier

Document type :

Compte-rendu et recension critique d'ouvrage

DOI :

10.1103/PhysRevE.90.013008

Title :

Cyclones and attractive streaming generated by acoustical vortices

Author(s) :

Riaud, Antoine [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Institut des Nanosciences de Paris [INSP]
Baudoin, Michael [Auteur]

Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Thomas, Jean-Louis [Auteur]
Institut des Nanosciences de Paris [INSP]
Bou Matar Lacaze, Olivier [Auteur]

Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Journal title :

Physical Review E : Statistical, Nonlinear, and Soft Matter Physics

Pages :

013008, 8 pages

Publisher :

American Physical Society

Publication date :

2014

ISSN :

1539-3755

HAL domain(s) :

Physique [physics]

English abstract : [en]

Acoustical and optical vortices have attracted great interest due to their ability to capture and manipulate particles with the use of radiation pressure. Here we show that acoustical vortices can also induce axial vortical ...
Show more >Acoustical and optical vortices have attracted great interest due to their ability to capture and manipulate particles with the use of radiation pressure. Here we show that acoustical vortices can also induce axial vortical flow reminiscent of cyclones, whose topology can be controlled by adjusting the properties of the acoustical beam. In confined geometry, the phase singularity enables generating "attractive streaming" with the flow directed toward the transducer. This opens perspectives for contactless vortical flow control.Show less >

Language :

Anglais

Popular science :

Non

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