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Broadside-coupled triangular split-ring-resonators for terahertz sensing

Published online by Cambridge University Press:  08 March 2013

Cumali Sabah  and
Hartmut G. Roskos
Cumali Sabah*
Affiliation:
Department of Electrical and Electronics Engineering, Middle East Technical University, Northern Cyprus campus, Kalkanli, Guzelyurt, TRNC, Mersin 10, Turkey
Hartmut G. Roskos
Affiliation:
Johann Wolfgang Goethe-Universität, Physikalisches Institut, Max-von-Laue str. 1, D-60438 Frankfurt am Main, Germany
*
ae-mail: sabah@metu.edu.tr
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Abstract

In this study, broadside-coupled triangular split-ring-resonators are designed and simulated as THz sensors. Their double-side sensing capability provides sensitivity enhancement compared with singlesided sensors. The material to be detected is modeled as an over-layer on the structure. The ensuing change of the transmission resonances is investigated as a function in the thickness and permittivity of the substrate and of the one- or two-sided over-layer. The propagation direction of the incident wave also allows to select the excited mode (via the polarization of the radiation) which provides additional flexibility to the proposed sensor device by the possibility to operate it over a larger frequency range. Overall, the polarization dependency of the structure, the double-side sensing and the high sensitivity make such structures attractive as THz sensors.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 61 , Issue 3 , March 2013 , 30402
Copyright
© EDP Sciences, 2013

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