Thin-film sensing with planar terahertz metamaterials: Sensitivity and limitations

John F. O'Hara; Ranjan Singh; Igal Brener; Evgenya Smirnova; Jiaguang Han; Antoinette Jane Taylor; Weili Zhang

doi:10.1364/OE.16.001786

Thin-film sensing with planar terahertz metamaterials: Sensitivity and limitations

John F. O'Hara
, Ranjan Singh
, Igal Brener
, Evgenya Smirnova
, Jiaguang Han
, Antoinette Jane Taylor
, Weili Zhang

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

507 Scopus citations

Abstract

The limiting effects of varying the thickness of a dielectric overlayer on planar double split-ring resonator (SRR) arrays are studied by terahertz time-domain spectroscopy. Uniform dielectric overlayers from 100 nm to 16 μm thick are deposited onto fixed SRR arrays in order to shift the resonance frequency of the electric response. We discuss the bounds of resonance shifting and emphasize the resulting limitations for SRR-based sensing. These results are presented in the context of typical biosensing situations and are compared to previous work and other existing sensing platforms.

Original language	English
Pages (from-to)	1786-1795
Number of pages	10
Journal	Optics Express
Volume	16
Issue number	3
DOIs	https://doi.org/10.1364/OE.16.001786
State	Published - Feb 4 2008

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abstract = "The limiting effects of varying the thickness of a dielectric overlayer on planar double split-ring resonator (SRR) arrays are studied by terahertz time-domain spectroscopy. Uniform dielectric overlayers from 100 nm to 16 μm thick are deposited onto fixed SRR arrays in order to shift the resonance frequency of the electric response. We discuss the bounds of resonance shifting and emphasize the resulting limitations for SRR-based sensing. These results are presented in the context of typical biosensing situations and are compared to previous work and other existing sensing platforms.",

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AU - Brener, Igal

AU - Smirnova, Evgenya

AU - Han, Jiaguang

AU - Taylor, Antoinette Jane

AU - Zhang, Weili

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AB - The limiting effects of varying the thickness of a dielectric overlayer on planar double split-ring resonator (SRR) arrays are studied by terahertz time-domain spectroscopy. Uniform dielectric overlayers from 100 nm to 16 μm thick are deposited onto fixed SRR arrays in order to shift the resonance frequency of the electric response. We discuss the bounds of resonance shifting and emphasize the resulting limitations for SRR-based sensing. These results are presented in the context of typical biosensing situations and are compared to previous work and other existing sensing platforms.

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DO - 10.1364/OE.16.001786

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JF - Optics Express

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Thin-film sensing with planar terahertz metamaterials: Sensitivity and limitations

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