Design and verification of a tunable metamaterial and its sensing application

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NETL
NSTL
Inst Engineering Technology-Iet

外文摘要：In this study, the authors present a single-band tunable metamaterial absorber in the 3.00-6.00 THz region. This absorption peak (90.00% amplitude) is excited by the cavity resonance at the resonance frequency of 4.55 THz. The cavity resonance mode is achieved in the spacer cavity formed by the metal/strontium titanate (STO)/SU-8 photoresist (SU-8)/STO/metal layers. The effect of structural parameters on this absorption peak is measured in two groups of experiments. As the diameter of holes array D increases, the cavity resonance peak is enhanced to 94.00% and shifted to 4.79 THz. However, for the increase in the thickness of the SU-8 layer T3, this peak is increased to 98.00% and moved to 3.88 THz. To verify the dual detection functions, two sets of experiments are carried out. In the third set of experiments, this absorption peak is increased to 99.80% and shifted to 5.60 THz with the increasing environmental temperature. In the fourth set of experiments, samples are covered by three liquids, and both the absorption amplitude and the resonance frequency are reduced. This tunable metamaterial absorber shows possibilities for applications in environmental temperature sensing and liquid sensing.

外文关键词：

strontium compoundsterahertz metamaterialselectromagnetic wave absorptiontemperature sensorssensing applicationsingle-band tunable metamaterial absorberabsorption peakresonance frequencycavity resonance modespacer cavitycavity resonance peakSU-8 layer T3absorption amplitudeenvironmental temperature sensinghole array Dstructural parametersmetal-STO-SU-8-STO-metal layersdual detection functionsliquid sensingfrequency 30 THz to 60 THzSrTiO3-SrTiO3

作者：

Zhong, Min

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作者单位：

Hezhou Univ, Dept Phys & Elect Engn, Hezhou 542899, Peoples R China

出版年：

2020

DOI：

10.1049/iet-opt.2020.0086

IET optoelectronics

ISSN：1751-8768

年,卷(期)：2020.14(6)

参考文献量41