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.
Zhou
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X
Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710072, PR China.
Zhao
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XP
Liu
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Y
D003198:Computer Simulation; D003461:Crystallography / Q000379:methods*; D007536:Isomerism; D008956:Models, Chemical; D012031:Refractometry / Q000379:methods*