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HL: Halbleiterphysik
HL 4: New materials
HL 4.6: Vortrag
Montag, 27. März 2006, 11:30–11:45, BEY 154
Near Field Phenomena in Metamaterials — •Frank Hesmer1, Olexander Zhuromskyy1, Ekaterina Shamonina1, and Laszlo Solymar2 — 1Department of Physics, University of Osnabrueck, Germany — 2EEE Department, Imperial College London, United Kingdom
Metamaterials are a new class of electromagnetic materials, which are man-maid structures composed of small resonant elements. The electromagnetic response of metamaterials can differ from that of natural materials, because properties of each individual element can be varied in a wide range. In particular the electromagnetic fields can be manipulated on the scales much smaller than the wavelength.
Applications of metamaterials include subwavelength imaging due to evanescent fields and magnetic flux guiding based on magnetoinductive (MI) waves with potential applications in Magnetic Resonance Imaging.
We apply a number of numerical and analytical tools to study the near field phenomena in a large variety of metamaterial elements (capacitively loaded loops, split ring resonators and swiss rolls). We plot distributions of the magnetic field and also streamlines and magnitudes of the Poynting vector for visualising the near field phenomena in magnetic metamaterials.
Support from the German Research Foundation (DFG) Emmy-Noether-Program is gratefully acknowledged.