Highly Sensitive Detection of 4-Methylimidazole Using a Terahertz Metamaterial
In this study, we demonstrated a highly sensitive detection method of 4-methylimidazole (4-MeI), a carcinogenic material, by using a terahertz (THz) metamaterial at a THz region. The THz metamaterials were fabricated with a metal array, using an electric-field-coupled inductor-capacitor (ELC) resona...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-12-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/18/12/4304 |
| _version_ | 1798002833180590080 |
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| author | Hee Jun Shin Hae Won Jang Gyeongsik Ok |
| author_facet | Hee Jun Shin Hae Won Jang Gyeongsik Ok |
| author_sort | Hee Jun Shin |
| collection | DOAJ |
| description | In this study, we demonstrated a highly sensitive detection method of 4-methylimidazole (4-MeI), a carcinogenic material, by using a terahertz (THz) metamaterial at a THz region. The THz metamaterials were fabricated with a metal array, using an electric-field-coupled inductor-capacitor (ELC) resonator structure, and a finite-difference time-domain (FDTD) simulation showed good agreement with the experimental results. We measured the THz spectra of the metamaterials to detect the 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 × 10<sup>−3</sup>, as the concentration was increased, up to 20 mg/L. Our study provides new insight into the application of metamaterials in detecting carcinogens, using a THz technique. |
| first_indexed | 2024-04-11T11:59:41Z |
| format | Article |
| id | doaj.art-6bdbe193713e454a95ca2fd76acc886d |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T11:59:41Z |
| publishDate | 2018-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-6bdbe193713e454a95ca2fd76acc886d2022-12-22T04:24:57ZengMDPI AGSensors1424-82202018-12-011812430410.3390/s18124304s18124304Highly Sensitive Detection of 4-Methylimidazole Using a Terahertz MetamaterialHee Jun Shin0Hae Won Jang1Gyeongsik Ok2Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-Gu, Pohang, Gyeongbuk 37673, KoreaResearch Group of Food Processing, Korea Food Research Institute, 245, Nongsaengmyeong-ro, Iseo-myeon, Wanju-gun, Jeollabuk-do 55365, KoreaResearch Group of Consumer Safety, Korea Food Research Institute, 245, Nongsaengmyeong-ro, Iseo-myeon, Wanju-gun, Jeollabuk-do 55365, KoreaIn this study, we demonstrated a highly sensitive detection method of 4-methylimidazole (4-MeI), a carcinogenic material, by using a terahertz (THz) metamaterial at a THz region. The THz metamaterials were fabricated with a metal array, using an electric-field-coupled inductor-capacitor (ELC) resonator structure, and a finite-difference time-domain (FDTD) simulation showed good agreement with the experimental results. We measured the THz spectra of the metamaterials to detect the 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 × 10<sup>−3</sup>, as the concentration was increased, up to 20 mg/L. Our study provides new insight into the application of metamaterials in detecting carcinogens, using a THz technique.https://www.mdpi.com/1424-8220/18/12/4304THz spectroscopy4-methylimidazolemetamaterialcarcinogen detection |
| spellingShingle | Hee Jun Shin Hae Won Jang Gyeongsik Ok Highly Sensitive Detection of 4-Methylimidazole Using a Terahertz Metamaterial Sensors THz spectroscopy 4-methylimidazole metamaterial carcinogen detection |
| title | Highly Sensitive Detection of 4-Methylimidazole Using a Terahertz Metamaterial |
| title_full | Highly Sensitive Detection of 4-Methylimidazole Using a Terahertz Metamaterial |
| title_fullStr | Highly Sensitive Detection of 4-Methylimidazole Using a Terahertz Metamaterial |
| title_full_unstemmed | Highly Sensitive Detection of 4-Methylimidazole Using a Terahertz Metamaterial |
| title_short | Highly Sensitive Detection of 4-Methylimidazole Using a Terahertz Metamaterial |
| title_sort | highly sensitive detection of 4 methylimidazole using a terahertz metamaterial |
| topic | THz spectroscopy 4-methylimidazole metamaterial carcinogen detection |
| url | https://www.mdpi.com/1424-8220/18/12/4304 |
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