| An experimental realization of finite tight binding graphene-like structures in a microwave setup is presented. The structures are realized using cylindric discs with a high index of refraction which are placed on a metallic surface. A second surface is adjusted atop the discs, such that the waves coupling the discs in the air are evanescent. In 2, 3 and 6 discs measurements we assured the validity ot the tight binding approximation. In reflection measurements performed in the centre of hexagonal lattices including 200 discs reminiscences of the Dirac point are observed, whereas resonances close to the Dirac points are found if the measurements are performed at the zigzag-edges or at the corner in case of a broken benzene ring. |
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