Thursday, June 18, 2015

Optical torque on small bi-isotropic particles

Manuel Nieto-Vesperinas

We establish the equations for the time-averaged optical torque on dipolar bi-isotropic particles. Due to the interference of the scattered fields, it has a term additional to the one that is commonly employed in theory and experiments. Its consequences for conservation of energy, angular momentum, and effects like negative torques are discussed.

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