Metamaterial localized resonance sensors: prospects and limitations

Claus Jeppesen, Sanshui Xiao, Asger Mortensen, Anders Kristensen

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Abstract

The prospects and limitations of metamaterial localized resonance sensors are investigated theoretically and experimentally. Gold split-ring resonators are employed as the model system where the light induced LC-resonance yields a figure-of-merit, sensitivity divided by linewidth, up to 54 depending on the split-ring resonator design and engineering of the light-plasmon coupling. This highest measured value is comparable to quasi-static predictions, suggesting incremental improvements beyond this point. Further optimization attempts show the effect of inhomogeneous broadening giving some indication that the limits have been reached for this particular design and material choice.
Original languageEnglish
JournalOptics Express
Volume18
Issue number24
Pages (from-to)25075-25080
ISSN1094-4087
DOIs
Publication statusPublished - 2010

Bibliographical note

This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-18-24-25075. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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