Open AccessDisorder effects of left-handed metamaterials with unitary dendritic structure cell
Author(s) -
Xin Zhou,
Xiaopeng Zhao,
Y. Liu
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.007674
Subject(s) - metamaterial , optics , negative refraction , physics , diffraction , lattice (music) , refractive index , passband , materials science , band pass filter , acoustics
We demonstrate that the left-handed materials (LHMs) with unity dendritic unit cells arrayed in disorder state present still passband and negative refractive. The resonance behavior of LHMs in disturbed periodic lattice, quasi-periodic lattice and random array are experimentally investigated. Employing amended retrieval method, the LHMs with disordered state exhibits a negative index of refraction. Basing on such LHMs lens, the subwavelength imaging experiment give a clearly point image with a full wave at half maximum width of 0.4 lambda at 9.3 GHz. Similarly, the power field distribution of "N" shaped antenna is measured beyond the diffraction limit.