Disorder effects of left-handed metamaterials with unitary dendritic structure cell.
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.
Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710072, PR China.
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Zhou
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Zhao
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Liu
D003198:Computer Simulation; D003461:Crystallography / Q000379:methods*; D007536:Isomerism; D008956:Models, Chemical; D012031:Refractometry / Q000379:methods*