Magnetic levitation of metamaterial bodies enhanced with magnetostatic surface resonances
Abstract
We propose that macroscopic objects built from negative-permeability metamaterials
may experience resonantly enhanced magnetic force in low-frequency magnetic fields.
Resonant enhancement of the time-averaged force originates from magnetostatic surface
resonances (MSRs), which are analogous to the electrostatic resonances of negative-permittivity
particles, well known as surface plasmon resonances in optics. We generalize the classical
problem of the MSR of a homogeneous object to include anisotropic metamaterials and
consider the most extreme case of anisotropy, where the permeability is negative in
one direction but positive in the others. It is shown that deeply subwavelength objects
made of such indefinite (hyperbolic) media exhibit a pronounced magnetic dipole resonance
that couples strongly to uniform or weakly inhomogeneous magnetic field and provides
strong enhancement of the magnetic force, enabling applications such as enhanced magnetic
levitation. © 2012 American Physical Society.
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https://hdl.handle.net/10161/5723Published Version (Please cite this version)
10.1103/PhysRevB.85.054430Publication Info
Urzhumov, Y; Chen, W; Bingham, C; Padilla, W; & Smith, DR (2012). Magnetic levitation of metamaterial bodies enhanced with magnetostatic surface resonances.
Physical Review B - Condensed Matter and Materials Physics, 85(5). pp. 054430. 10.1103/PhysRevB.85.054430. Retrieved from https://hdl.handle.net/10161/5723.This is constructed from limited available data and may be imprecise. To cite this
article, please review & use the official citation provided by the journal.
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Show full item recordScholars@Duke
Willie John Padilla
Professor in the Department of Electrical and Computer Engineering
David R. Smith
James B. Duke Distinguished Professor of Electrical and Computer Engineering
Dr. David R. Smith is currently the James B. Duke Professor of Electrical and Computer
Engineering Department at Duke University. He is also Director of the Center for Metamaterials
and Integrated Plasmonics at Duke and holds the positions of Adjunct Associate Professor
in the Physics Department at the University of California, San Diego, and Visiting
Professor of Physics at Imperial College, London. Dr. Smith received his Ph.D. in
1994 in Physics from the University of California, San D
Yaroslav A. Urzhumov
Adjunct Assistant Professor in the Department of Electrical and Computer Engineering
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<![endif]-->Dr. Urzhumov is Adjunct Assistant Professor of ECE at Duke University,
and also a Technologist at the Metamaterials Commercialization Center of Intellectual
Ventures. Previously a research faculty at Duke, he works on applied and theoretical
aspects of metama
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