Resonance hybridization in nanoantenna arrays based on asymmetric split-ring resonators

Asymmetric split ring resonators (A-SRRs) are composed of two separate metallic arcs of asymmetric lengths that share the same center-of-curvature. The two arcs interact to produce a very steep slope in the reflection spectrum. We utilize the plasmon resonance hybridization model to understand and describe the working of an A-SRR and produce experimental and simulation results to show that the A-SRR resonances are a modified linear superposition of the individual plasmon resonances coming from each of the arcs. (C) 2011 American Institute of Physics. [doi:10.1063/1.3579537]