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

被引：451

作者：

O'Hara, John F. ^{[1
]}

Singh, Ranjan ^{[2
]}

Brener, Igal ^{[3
]}

Smirnova, Evgenya ^{[4
]}

Han, Jiaguang ^{[2
]}

Taylor, Antoinette J. ^{[1
]}

Zhang, Weili ^{[2
]}

机构：

[1] Los Alamos Natl Lab, MPA CINT, Los Alamos, NM 87545 USA

[2] Oklahoma State Univ, Sch Elect & Comp Engn, Stillwater, OK 74078 USA

[3] Sandia Natl Labs, Albuquerque, NM 87122 USA

[4] Los Alamos Natl Lab, ISR 6, Los Alamos, NM 87545 USA

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 03期

关键词：

D O I：

10.1364/OE.16.001786

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 mu m 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.

引用

页码：1786 / 1795

页数：10

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