Dresden 2006 – wissenschaftliches Programm

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HL: Halbleiterphysik

HL 39: Symposium Photonic metamaterials

HL 39.1: Fachvortrag

Donnerstag, 30. März 2006, 11:00–11:30, HSZ 01

Magnetoinductive waves in magnetic metamaterials — •Ekaterina Shamonina — Department of Physics, University of Osnabrück, D-49069 Osnabrück, Germany

Magnetoinductive waves have arisen as a by-product of the research on negative refraction and subwavelength imaging in metamaterials. Metamaterials are artificial structures comprising arrays of small resonant elements. Contrary to photonic band gap (PBG) materials, where the periodicity of the structure is comparable to the wavelength, in metamaterials both the size and the distance between the elements are much smaller than the wavelength. Consequently, the electromagnetic response of PBG materials is due to Bragg diffraction phenomena, whereas in metamaterials subwavelength phenomena are responsible for their unusual electromagnetic properties. In particular, magnetic metamaterial elements such as Split Ring Resonators are capable of propagating not only transverse electromagnetic waves but also waves due to their magnetic coupling and their resonant nature, known now as magnetoinductive waves, opening up several avenues of novell applications.

In the present talk the birth of the subject of metamaterials, including many early contributions, is briefly reviewed and the properties of magnetoinductive waves are discussed with particular reference to their dispersion characteristics, excitation and applications such as near field imaging, sensing and manipulation including waveguides, waveguide components, flux concentrators and detectors for magnetic resonance imaging.