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Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials
Published on: March 23, 2017
Strong beaming of microwave surface waves with complementary split-ring-resonator arrays
Emily Young1, Joseph A Dockrey1, Alastair P Hibbins1
1Department of Physics and Astronomy, University of Exeter, Stocker Road, Exeter, EX4 4QL, UK.
Abstract:
A thin copper sheet, populated by an array of complementary split ring resonators, presents strong surface wave beaming in orthogonal directions at two distinct frequencies. This simple array is significantly thinner than existing single frequency beaming surfaces. The observed beaming frequencies are associated with the two lowest resonance modes of the split rings, and the beams are subwavelength in width and approximately non-diverging. The beaming is analysed through comparison of near-field scans of the surface-normal electric fields with numerical simulations.
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