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Waveguides for walking droplets
Filoux, Boris; Hubert, Maxime; Schlagheck, Peter et al.
2016
 

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Abstract :
[en] When gently placing a droplet onto a vertically vibrated bath, a drop can bounce without coalescing. Upon increasing the forcing acceleration, the droplet is propelled by the wave it generates and becomes a walker with a well defined speed. We investigate the confinement of a walker in different rectangular cavities, used as waveguides for the Faraday waves emitted by successive droplet bounces. By studying the walker velocities, we discover that 1d confinement is optimal for narrow channels of width of D≃1.5λF. We also propose an analogy with waveguide models based on the observation of the Faraday instability within the channels.
Disciplines :
Physics
Author, co-author :
Filoux, Boris ;  Université de Liège > Département de physique > Physique statistique
Hubert, Maxime ;  Université de Liège > Département de physique > Physique statistique
Schlagheck, Peter ;  Université de Liège > Département de physique > Physique quantique statistique
Vandewalle, Nicolas  ;  Université de Liège > Département de physique > Physique statistique
Language :
English
Title :
Waveguides for walking droplets
Publication date :
27 June 2016
Funders :
CFB - Communauté française de Belgique [BE]
Funding text :
Action des Recherches Concertées (Communauté française de Belgique) : ARC 12/17-02
Available on ORBi :
since 07 July 2016

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