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Article Dans Une Revue Physical Review Letters Année : 2014

Electromagnetically induced torque on a large ring in the microwave range.

Résumé

We report on the exchange of orbital angular momentum between an electromagnetic wave and a 30 cm diameter ring. Using a turnstile antenna in the GHz range, we induce a torque on a suspended copper strip of the order of 10(-8) N m. Rotations of a few degrees and accelerations up to 4×10(-4) °/s2 are observed. A linear dependence of the acceleration as a function of the applied power is found. There are many applications in the detection of angular momentum in electromagnetics, in acoustics, and also in the magnetization of nanostructures.

Domaines

Biophysique
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Dates et versions

hal-00998554 , version 1 (02-06-2014)

Identifiants

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Olivier Emile, Christian Brousseau, Janine Emile, Ronan Niemiec, Kouroch Mahdjoubi, et al.. Electromagnetically induced torque on a large ring in the microwave range.. Physical Review Letters, 2014, 112 (5), pp.053902. ⟨10.1103/PhysRevLett.112.053902⟩. ⟨hal-00998554⟩
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