Berlin 2008 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

HL: Fachverband Halbleiterphysik

HL 31: Poster II

HL 31.62: Poster

Dienstag, 26. Februar 2008, 16:30–19:00, Poster D

Experimental verification of the lens effect of a fractal structured LHM in the microwave regime — •Ernst Lenz, Benjamin Meier, and Heino Henke — TU Berlin, Fachgebiet Theoretische Elektrotechnik EN-2, Einsteinufer 17, 10587 Berlin, Germany

Left-handed material (LHM) is a novel artificial structure with outstanding properties, such as the predicted lens effect [1,2,3]. In this presentation we show experimental data, confirming the lense effect for the microwave regime. The used test structure was originally suggested by Ziolkowski et al. [4].

The experimental proof of the lens effect was achieved by a variation of the angle of incidence of the electromagnetic radiation. In addition we investigate a new constructed metamaterial where we have replaced the split ring resonator by Koch snowflakes [5,6]. The data emphasize the changes in the scattering, diffraction, and absorption behavior compared to the test structure.
[1] V. G. Veselago, Sov. Phys. Usp. 10, 509 (1968). [2] J. B. Pendry, Phys. Rev. Lett 85, 3966 (2000). [3] N. Engheta et al., IEEE-TMTT 53, 1535 (2005). [4] R. W. Ziolkowski, IEEE-TAP 51, 1516 (2003). [5] J. B. Pendry et al., IEEE-TMTT 47, 2075 (1999). [6] K. J. Falconer, Fraktale Geometrie, Spektrum, Berlin (1990).