Article
Version 1
Preserved in Portico This version is not peer-reviewed
Highly Sensitive Detection of 4-Methylimidazole Using a Terahertz Metamaterial
Version 1
: Received: 17 October 2018 / Approved: 18 October 2018 / Online: 18 October 2018 (11:58:31 CEST)
A peer-reviewed article of this Preprint also exists.
Shin, H.J.; Jang, H.W.; Ok, G. Highly Sensitive Detection of 4-Methylimidazole Using a Terahertz Metamaterial. Sensors 2018, 18, 4304. Shin, H.J.; Jang, H.W.; Ok, G. Highly Sensitive Detection of 4-Methylimidazole Using a Terahertz Metamaterial. Sensors 2018, 18, 4304.
Abstract
We demonstrate, for the first time, a highly sensitive detection of 4-methylimidazole (4-MeI), a carcinogenic material, by applying an electric field enhancement technique using a terahertz (THz) metamaterial at the THz region. The THz metamaterials were fabricated with a metal array using an electric-field-coupled inductor-capacitor (ELC) resonator structure, and FDTD simulation showed good agreement with experimental results. We measured the THz spectra of the metamaterials to detect 4-MeI concentrations of 0, 1, 2, 5, 10, 15, and 20 mg/L. The resonance frequency of the metamaterial was shifted by approximately 8 GHz and transmittance at the resonance frequency increased to 2 x 10-3 as the concentration was increased, up to 20 mg/L. Our study provides new insight into application of metamaterials to detect carcinogen using a THz technique.
Keywords
THz spectroscopy; 4-methylimidazole; metamaterial; carcinogen detection
Subject
Physical Sciences, Optics and Photonics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment