Metamaterial imaging applications require optical isotropy. We show that highly symmetric unit cells do not necessarily exhibit this property. We prove that the dispersion relation can be tailored using a supercell metama-terial. Such metamaterial exhibits an isotropic negative index close to -1. Its potential for image formation is discussed.
Proceedings Metamaterials 2010, 2010, p. 1006-1008
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4th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, 2010