Tuning Mie Scattering Resonances in Soft Materials with Magnetic Fields
ZIMNY, Kevin
Centre de recherches Paul Pascal [CRPP]
Laboratoire de Chimie des Polymères Organiques [LCPO]
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Centre de recherches Paul Pascal [CRPP]
Laboratoire de Chimie des Polymères Organiques [LCPO]
ZIMNY, Kevin
Centre de recherches Paul Pascal [CRPP]
Laboratoire de Chimie des Polymères Organiques [LCPO]
Centre de recherches Paul Pascal [CRPP]
Laboratoire de Chimie des Polymères Organiques [LCPO]
SANDRE, Olivier
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences
< Reduce
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences
Language
en
Article de revue
This item was published in
Physical Review Letters. 2013, vol. 111, n° 264301, p. 1-5
American Physical Society
English Abstract
An original approach is proposed here to reversibly tune Mie scattering resonances occurring in random media by means of external low induction magnetic fields. This approach is valid for both electromagnetic and acoustic ...Read more >
An original approach is proposed here to reversibly tune Mie scattering resonances occurring in random media by means of external low induction magnetic fields. This approach is valid for both electromagnetic and acoustic waves. The experimental demonstration is supported by ultrasound experiments performed on emulsions made of fluorinated ferrofluid spherical droplets dispersed in a Bingham fluid.We show that the electromagnet-induced change of droplet shape into prolate spheroids, with a moderate aspect ratio of 2.5, drastically affects the effective properties of the disordered medium. Its effective acoustic attenuation coefficient is shown to vary by a factor of 5, by controlling both the flux density and orientation of the applied magnetic field.Read less <
Origin
Hal imported