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Magnetic levitation of metamaterial bodies enhanced with magnetostatic surface resonances

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Date
2012-02-27
Authors
Urzhumov, Y
Chen, W
Bingham, C
Padilla, W
Smith, DR
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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.
Type
Journal article
Permalink
https://hdl.handle.net/10161/5723
Published Version (Please cite this version)
10.1103/PhysRevB.85.054430
Publication 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.
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Scholars@Duke

Padilla

Willie John Padilla

Professor in the Department of Electrical and Computer Engineering
Smith

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 Dieg
Urzhumov

Yaroslav A. Urzhumov

Adjunct Assistant Professor in the Department of Electrical and Computer Engineering
<!--[if gte mso 9]> <![endif]--> <!--[if gte mso 9]> <![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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