Electromagnetic propulsion and separation by chirality of nanoparticles in liquids

Details Electromagnetic propulsion and separation by chirality of nanoparticles in liquids Electromagnetic propulsion and separation by chirality of nanoparticles in liquids

2011-03-31

arxiv.org/abs/1104.0026v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 2 figures

Scientific paper

We introduce a new mechanism for the propulsion and separation by chirality of small ferromagnetic particles suspended in a liquid. Under the action of a uniform d.c. magnetic field H and an a.c. electric field E isomers with opposite chirality move in opposite directions. Such a mechanism could have a significant impact on a wide range of emerging technologies. The component of the chiral velocity that is odd in H is found to be proportional to the intrinsic orbital and spin angular momentum of the magnetized electrons. This effect arises because a ferromagnetic particle responds to the applied torque as a small gyroscope.

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