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Frequency tunable terahertz metamaterials using broadside coupled split-ring resonators
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Date
2011-05-19
Author
Ekmekci, E.
Strikwerda, A. C.
Fan, K.
Keiser, G.
Zhang, X.
Sayan, Gönül
Averitt, R. D.
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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We present frequency tunable metamaterial designs at terahertz (THz) frequencies using broadside coupled split-ring resonator (BC-SRR) arrays. Frequency tuning, arising from changes in near-field coupling, is obtained by in-plane displacement of the two SRR layers. For electrical excitation, the resonance frequency continuously redshifts as a function of displacement. The maximum frequency shift occurs for vertical displacement of half a unit cell, resulting in a shift of 663 GHz (51% of f(0)). We discuss the difference in the BC-SRR response for electrical excitation in comparison to magnetic excitation in terms of hybridization arising from inductive and capacitive coupling.
Subject Keywords
Electronic, Optical and Magnetic Materials
,
Condensed Matter Physics
URI
https://hdl.handle.net/11511/48720
Journal
PHYSICAL REVIEW B
DOI
https://doi.org/10.1103/physrevb.83.193103
Collections
Department of Electrical and Electronics Engineering, Article