High-sensitivity detection of chlorothalonil via terahertz metasensor
Given the complex pretreatment and low sensitivity of pesticide residue detection with the conventional testing method, a Terahertz metasensor consisting of the four-division ring resonator (FSRRs) was proposed and fabricated for the identification and detection of chlorothalonil. Through simulation...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/aba805 |
| _version_ | 1797746277538070528 |
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| author | Yixing Zhang Yunxia Ye Xiaoxian Song Maosheng Yang Yunpeng Ren Xudong Ren Lanju Liang Jianquan Yao |
| author_facet | Yixing Zhang Yunxia Ye Xiaoxian Song Maosheng Yang Yunpeng Ren Xudong Ren Lanju Liang Jianquan Yao |
| author_sort | Yixing Zhang |
| collection | DOAJ |
| description | Given the complex pretreatment and low sensitivity of pesticide residue detection with the conventional testing method, a Terahertz metasensor consisting of the four-division ring resonator (FSRRs) was proposed and fabricated for the identification and detection of chlorothalonil. Through simulations, the theoretical sensitivity of this metasensor was found to reach 156.3 GHz /RIU (RIU, refractive index unit) under an analyte layer 1 μ m thick. Through experiments, firstly, the characteristic fingerprint spectrum of chlorothalonil in the THz band was obtained by detecting solid chlorothalonil with THz time-domain spectrum system. Then, Terahertz metasensor was used to detect the chlorothalonil solutions of different concentrations. The experimental results showed that the resonant peak of the metasensor was redshifted with the increase of chlorothalonil concentration. Compared with the detection strategy only using the characteristic fingerprint spectrum, the sensitivity of the metasensor improved 106 times, which was up to a minimum of 1 mg l ^−1 . This study indicates that the metasensor is a promising optical device for detecting the pesticide residues with a very high sensitivity. |
| first_indexed | 2024-03-12T15:34:31Z |
| format | Article |
| id | doaj.art-863caf36f62b4c008f7f9bce8e925ad1 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:34:31Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-863caf36f62b4c008f7f9bce8e925ad12023-08-09T16:16:53ZengIOP PublishingMaterials Research Express2053-15912020-01-017909580110.1088/2053-1591/aba805High-sensitivity detection of chlorothalonil via terahertz metasensorYixing Zhang0Yunxia Ye1https://orcid.org/0000-0002-1765-4065Xiaoxian Song2Maosheng Yang3Yunpeng Ren4Xudong Ren5Lanju Liang6Jianquan Yao7Institute of Micro-Nano Optoelectronics and Terahertz Technology, Jiangsu University , Zhenjiang, Jiangsu 212013, People’s Republic of ChinaInstitute of Micro-Nano Optoelectronics and Terahertz Technology, Jiangsu University , Zhenjiang, Jiangsu 212013, People’s Republic of China; School of Mechanical Engineering, Jiangsu University , Zhenjiang, Jiangsu 212013, People’s Republic of ChinaInstitute of Micro-Nano Optoelectronics and Terahertz Technology, Jiangsu University , Zhenjiang, Jiangsu 212013, People’s Republic of China; School of Mechanical Engineering, Jiangsu University , Zhenjiang, Jiangsu 212013, People’s Republic of ChinaInstitute of Micro-Nano Optoelectronics and Terahertz Technology, Jiangsu University , Zhenjiang, Jiangsu 212013, People’s Republic of China; School of Mechanical Engineering, Jiangsu University , Zhenjiang, Jiangsu 212013, People’s Republic of ChinaInstitute of Micro-Nano Optoelectronics and Terahertz Technology, Jiangsu University , Zhenjiang, Jiangsu 212013, People’s Republic of China; School of Mechanical Engineering, Jiangsu University , Zhenjiang, Jiangsu 212013, People’s Republic of ChinaInstitute of Micro-Nano Optoelectronics and Terahertz Technology, Jiangsu University , Zhenjiang, Jiangsu 212013, People’s Republic of China; School of Mechanical Engineering, Jiangsu University , Zhenjiang, Jiangsu 212013, People’s Republic of ChinaInstitute of Micro-Nano Optoelectronics and Terahertz Technology, Jiangsu University , Zhenjiang, Jiangsu 212013, People’s Republic of ChinaInstitute of Micro-Nano Optoelectronics and Terahertz Technology, Jiangsu University , Zhenjiang, Jiangsu 212013, People’s Republic of China; College of Precision Instruments and Opto-Electronics Engineering, Tianjin University , Tianjin 300072, People’s Republic of ChinaGiven the complex pretreatment and low sensitivity of pesticide residue detection with the conventional testing method, a Terahertz metasensor consisting of the four-division ring resonator (FSRRs) was proposed and fabricated for the identification and detection of chlorothalonil. Through simulations, the theoretical sensitivity of this metasensor was found to reach 156.3 GHz /RIU (RIU, refractive index unit) under an analyte layer 1 μ m thick. Through experiments, firstly, the characteristic fingerprint spectrum of chlorothalonil in the THz band was obtained by detecting solid chlorothalonil with THz time-domain spectrum system. Then, Terahertz metasensor was used to detect the chlorothalonil solutions of different concentrations. The experimental results showed that the resonant peak of the metasensor was redshifted with the increase of chlorothalonil concentration. Compared with the detection strategy only using the characteristic fingerprint spectrum, the sensitivity of the metasensor improved 106 times, which was up to a minimum of 1 mg l ^−1 . This study indicates that the metasensor is a promising optical device for detecting the pesticide residues with a very high sensitivity.https://doi.org/10.1088/2053-1591/aba805chlorothalonilhigh-sensitivity detectionmetamaterialTHz-TDS |
| spellingShingle | Yixing Zhang Yunxia Ye Xiaoxian Song Maosheng Yang Yunpeng Ren Xudong Ren Lanju Liang Jianquan Yao High-sensitivity detection of chlorothalonil via terahertz metasensor Materials Research Express chlorothalonil high-sensitivity detection metamaterial THz-TDS |
| title | High-sensitivity detection of chlorothalonil via terahertz metasensor |
| title_full | High-sensitivity detection of chlorothalonil via terahertz metasensor |
| title_fullStr | High-sensitivity detection of chlorothalonil via terahertz metasensor |
| title_full_unstemmed | High-sensitivity detection of chlorothalonil via terahertz metasensor |
| title_short | High-sensitivity detection of chlorothalonil via terahertz metasensor |
| title_sort | high sensitivity detection of chlorothalonil via terahertz metasensor |
| topic | chlorothalonil high-sensitivity detection metamaterial THz-TDS |
| url | https://doi.org/10.1088/2053-1591/aba805 |
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