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Terahertz-Multiplexed Metallic Metasurfaces for Enhanced Trace Sample Absorption.

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Title: Terahertz-Multiplexed Metallic Metasurfaces for Enhanced Trace Sample Absorption.
Authors: Zhang, Pingbu1 (AUTHOR), Yan, Dexian1 (AUTHOR) yandexian1991@163.com, Li, Xiangjun1 (AUTHOR) xiangjun_li@cjlu.edu.cn, Zhang, Jiaju1 (AUTHOR), Cao, Yingjue1 (AUTHOR)
Source: Plasmonics. Jun2025, Vol. 20 Issue 6, p3247-3255. 9p.
Subjects: Submillimeter waves, Biomolecules spectra, Absorption spectra, Physical sciences, Electric fields, Metallic surfaces
Abstract: Many biomolecules exhibit characteristic fingerprint spectra in the terahertz band. This paper describes an optimized detection method using the parametric multiplexing of terahertz metallic metasurface. The method can greatly enhance the terahertz absorption spectra of trace α-lactose analytes by multiplexing geometric parameters of the metasurface. Additionally, the dispersion relationship, electric field distribution, absorptivity and other characteristics of the metal metasurfaces are obtained. The relationship between the thickness of the trace sample, the structural parameters of the device and the enhancement characteristics is investigated. The results demonstrate that the designed terahertz metallic metasurface exhibits high sensitivity and stability in detecting the absorption fingerprint spectrum of biomolecules. The absorption enhancement factor of the 0.1-μm thick α-lactose sample to be tested on the metallic metasurface is about 264 times higher than the direct absorption of terahertz waves by the untreated specimen. The findings of this research offer new ideas and methods for further researches and applications in the field of biomolecule absorption detection. [ABSTRACT FROM AUTHOR]
Copyright of Plasmonics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Terahertz-Multiplexed Metallic Metasurfaces for Enhanced Trace Sample Absorption.
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  Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Pingbu%22">Zhang, Pingbu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Dexian%22">Yan, Dexian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yandexian1991@163.com</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Xiangjun%22">Li, Xiangjun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> xiangjun_li@cjlu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Jiaju%22">Zhang, Jiaju</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cao%2C+Yingjue%22">Cao, Yingjue</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Plasmonics%22">Plasmonics</searchLink>. Jun2025, Vol. 20 Issue 6, p3247-3255. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Submillimeter+waves%22">Submillimeter waves</searchLink><br /><searchLink fieldCode="DE" term="%22Biomolecules+spectra%22">Biomolecules spectra</searchLink><br /><searchLink fieldCode="DE" term="%22Absorption+spectra%22">Absorption spectra</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+sciences%22">Physical sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+fields%22">Electric fields</searchLink><br /><searchLink fieldCode="DE" term="%22Metallic+surfaces%22">Metallic surfaces</searchLink>
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  Data: Many biomolecules exhibit characteristic fingerprint spectra in the terahertz band. This paper describes an optimized detection method using the parametric multiplexing of terahertz metallic metasurface. The method can greatly enhance the terahertz absorption spectra of trace α-lactose analytes by multiplexing geometric parameters of the metasurface. Additionally, the dispersion relationship, electric field distribution, absorptivity and other characteristics of the metal metasurfaces are obtained. The relationship between the thickness of the trace sample, the structural parameters of the device and the enhancement characteristics is investigated. The results demonstrate that the designed terahertz metallic metasurface exhibits high sensitivity and stability in detecting the absorption fingerprint spectrum of biomolecules. The absorption enhancement factor of the 0.1-μm thick α-lactose sample to be tested on the metallic metasurface is about 264 times higher than the direct absorption of terahertz waves by the untreated specimen. The findings of this research offer new ideas and methods for further researches and applications in the field of biomolecule absorption detection. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Plasmonics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11468-024-02544-6
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      – Code: eng
        Text: English
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      – SubjectFull: Absorption spectra
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      – SubjectFull: Metallic surfaces
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              M: 06
              Text: Jun2025
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              Y: 2025
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