Optimization and tunability of deep subwavelength resonators for metamaterial applications: complete enhanced transmission through a subwavelength aperture

Date
2009
Advisor
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Source Title
Optics Express
Print ISSN
10944087
Electronic ISSN
Publisher
Optical Society of American (OSA)
Volume
17
Issue
8
Pages
5933 - 5943
Language
English
Type
Article
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Abstract

In the present work, we studied particle candidates for metamaterial applications, especially in terms of their electrical size and resonance strength. The analyzed particles can be easily produced via planar fabrication techniques. The electrical size of multi-split ring resonators, spiral resonators, and multi-spiral resonators are reported as a function of the particle side length and substrate permittivity. The study is continued by demonstrating the scalability of the particles to higher frequencies and the proposition of the optimized particle for antenna, absorber, and superlens applications: a multi-spiral resonator with ë/30 electrical size operating at 0.810 GHz. We explain a method for tuning the resonance frequency of the multi-split structures. Finally, we demonstrate that by inserting deep subwavelength resonators into periodically arranged subwavelength apertures, complete transmission enhancement can be obtained at the magnetic resonance frequency. © 2009 Optical Society of America.

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Keywords
Applications, Natural frequencies, Wave transmission, Enhanced transmissions, Higher frequencies, Planar fabrications, Resonance frequencies, Resonance strengths, Side lengths, Spiral resonators, Split ring resonators, Sub-wavelength apertures, Sub-wavelength resonators, Superlens, Transmission enhancements, Tunability, Resonators, article, computer aided design, equipment, equipment design, instrumentation, materials, optical instrumentation, refractometry, reproducibility, sensitivity and specificity, transducer, Computer-Aided Design, Equipment Design, Equipment Failure Analysis, Manufactured Materials, Optical Devices, Refractometry, Reproducibility of Results, Sensitivity and Specificity, Transducers
Citation
Published Version (Please cite this version)