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Title: Circuit model optimization of a nano split ring resonator dimer antenna operating in infrared spectral range

Metamaterials are comprised of metallic structures with a strong response to incident electromagnetic radiation, like, for example, split ring resonators. The interaction of resonator ensembles with electromagnetic waves can be simulated with finite difference or finite elements algorithms, however, above a certain ensemble size simulations become inadmissibly time or memory consuming. Alternatively a circuit description of metamaterials, a well developed modelling tool at radio and microwave frequencies, allows to significantly increase the simulated ensemble size. This approach can be extended to the IR spectral range with an appropriate set of circuit element parameters accounting for physical effects such as electron inertia and finite conductivity. The model is verified by comparing the coupling coefficients with the ones obtained from the full wave numerical simulations, and used to optimize the nano-antenna design with improved radiation characteristics.
Authors:
 [1] ; ;  [2] ;  [3]
  1. Erlangen Graduate School in Advanced Optical Technologies (SAOT), University of Erlangen-Nuremberg, 91052 Erlangen (Germany)
  2. Institute of Optics, Information and Photonics, University of Erlangen-Nuremberg, 91058 Erlangen (Germany)
  3. Department of Engineering Science, University of Oxford, Parks Road, OX1 3PJ Oxford (United Kingdom)
Publication Date:
OSTI Identifier:
22308186
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 16; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACCOUNTING; ALGORITHMS; ANTENNAS; COUPLING; DIMERS; INFRARED SPECTRA; INTERACTIONS; MICROWAVE RADIATION; MOMENT OF INERTIA; OPTIMIZATION; RESONATORS