Meng, K, Park, SJ orcid.org/0000-0001-8606-191X, Burnett, AD et al. (12 more authors) (2019) Increasing the sensitivity of terahertz split ring resonator metamaterials for dielectric sensing by localized substrate etching. Optics Express, 27 (16). pp. 23164-23172. ISSN 1094-4087
Abstract
We demonstrate a significant enhancement in the sensitivity of split ring resonator terahertz metamaterial dielectric sensors by the introduction of etched trenches into their inductive-capacitive gap area, both through finite element simulations and in experiments performed using terahertz time-domain spectroscopy. The enhanced sensitivity is demonstrated by observation of an increased frequency shift in response to overlaid dielectric material of thicknesses up to 18 μm deposited on to the sensor surface. We show that sensitivity to the dielectric is enhanced by a factor of up to ~2.7 times by the incorporation of locally etched trenches with a depth of ~3.4 μm, for example, and discuss the effect of the etching on the electrical properties of the sensors. Our experimental findings are in good agreement with simulations of the sensors obtained using finite element methods.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
Keywords: | Metamaterials; Sensor; LC resonance; Dielectric sensor; Trench |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Funding Information: | Funder Grant number EPSRC EP/P007449/1 EPSRC EP/P021859/1 EPSRC EP/R00501X/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 18 Jun 2019 12:41 |
Last Modified: | 17 Dec 2024 13:03 |
Status: | Published |
Publisher: | Optical Society of America (OSA) |
Identification Number: | 10.1364/OE.27.023164 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:147406 |