Document Type

Patent

Publication Date

11-16-2010

Abstract

Describes a device having a dipolar ring surrounding an interior region that is disposed asymmetrically on the ring. The dipolar ring generates a toroidal moment switchable between at least two stable states by a homogeneous field applied to the dipolar ring in the plane of the ring. The ring may be made of ferroelectric or magnetic material. In the former case, the homogeneous field is an electric field and in the latter case, the homogeneous field is a magnetic field.

Department

Physics

Patent Number

US7835168

Application Number

US20090161404

Application Published

6-25-2009

Application Filed

12-17-2008

Assignee

Board of Trustees of the University of Arkansas (Little Rock, AK)

Comments

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under the terms of Grant No. DE-FG02-05ER46188 awarded by the Department of Energy, Grant No. N00014-04-1-0413 awarded by the Office of Naval Research, Grant Nos. DMR-0701958, DMR-0404335 and DMR-0080054(C-SPIN) awarded by the National Science Foundation and MRI Grant Nos. 0421099 and 0722625 from the National Science Foundation. The Government has certain rights in the invention.

Sergey A. Prosandeev, Department of Physics

Inna V. Ponomareva, Department of Physics

Igor A. Kornev, Department of Physics

Laurent M. Bellaiche, Department of Physics

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