The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.
Ultrasensitive Detection of Residual Pesticides Using THz Near-Field Enhancement
Abstract
We present a novel type of highly sensitive and selective detection method for residual pesticide molecules including, e.g., methomyl using nanoscale metamaterials based terahertz (THz) time-domain spectroscopy (TDS) system. Nanoscale slot-antenna-based metamaterials were designed for the strong THz resonance at a certain frequency, where the specific molecule has intramolecular or intermolecular collective vibrational mode. Enhanced THz near-field via a nano-antenna metamaterial strongly increases absorption cross section, and this leads to the detection sensitivity up to parts-per-billion level even in a solution state of pesticide sample. Measured transmittance and reflectance spectrum results show excellent performances in both sensitivity and selectivity. We also imaged reflected THz signals though our THz nano-metamaterials in a nondestructive manner to simply detect the contained residual pesticide at the surface of an apple as it is, without any treatment. This observation can offer the possibility for further various applications as prompt and accurate molecule sensing tools in real time.
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Cutting-edge terahertz technology
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Self-citationWalther, M., Płochocka, P., Fischer, B., Helm, H., & Jepsen, P. U. (2002) · Biopolymers · doi:10.1002/bip.10106 · Cited by 326
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Metadata
- Authors
- Lee, D.-K., Kim, G., Kim, C., Jhon, Y. M., Kim, J. H., Lee, T., Son, J.-H., & Seo, M.
- Affiliations
- University of Seoul (KR)
- Rural Development Administration (KR)
- Korea Institute of Science and Technology (KR)
- Venue
- IEEE Transactions on Terahertz Science and Technology
- Published
- 2016-05
- Volume
- 6
- Issue
- 3
- Pages
- 389-395
- ISSN
- 2156-342X (ISSN-L)
- 2156-3446
- OpenAlex
- W2339204379
- Cited by
- 67
- References
- 27
- Citations by year
- 2026: 5 · 2025: 8 · 2024: 11 · 2023: 12 · 2022: 2 · 2021: 10 · 2020: 5 · 2019: 3 · 2018: 6 · 2017: 4 · 2016: 1
- FWCI
- 2.15
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- IEEE Transactions on Terahertz Science and Technology (publishedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Microwave and Dielectric Measurement Techniques
- Keywords
- methomyl, terahertz metamaterials, slot antenna, near-field enhancement, terahertz time-domain spectroscopy, molecular vibrational modes, absorption cross section, non-destructive testing, food safety
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- The paper
- Lee, D.-K., Kim, G., Kim, C., Jhon, Y. M., Kim, J. H., Lee, T., Son, J.-H., & Seo, M. (2016). Ultrasensitive Detection of Residual Pesticides Using THz Near-Field Enhancement. IEEE Transactions on Terahertz Science and Technology. https://doi.org/10.1109/tthz.2016.2538731
