Loop-wire medium for investigating plasmons at microwave frequencies
- 27 August 1999
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 75 (10) , 1425-1427
- https://doi.org/10.1063/1.124714
Abstract
We present numerical simulations and microwave measurements on a loop-wire structure that acts as an effective medium exhibiting a well-defined bulk plasma frequency in the microwave regime, with an effective negative dielectric function below this plasma frequency. The dependence of this plasmonic response on the self-inductance of the constituent wire elements is made explicit. A finite structure, approximately spherical, composed of this inductive medium is studied, and reveals subwavelength surface plasmon resonances below the bulk plasma frequency.Keywords
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