Plasmonic Superstructure Arrays Fabricated by Laser Near-Field Reduction for Wide-Range SERS Analysis of Fluorescent Materials Article Swipe
Shi Bai
,
Anming Hu
,
Youjin Hu
,
Ying Ma
,
Kotaro Obata
,
Koji Sugioka
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.3390/nano12060970
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.3390/nano12060970
Surface-enhanced Raman scattering (SERS) enables trace-detection for biosensing and environmental monitoring. Optimized enhancement of SERS can be achieved when the energy of the localized surface plasmon resonance (LSPR) is close to the energy of the Raman excitation wavelength. The LSPR can be tuned using a plasmonic superstructure array with controlled periods. In this paper, we develop a new technique based on laser near-field reduction to fabricate a superstructure array, which provides distinct features in the formation of periodic structures with hollow nanoclusters and flexible control of the LSPR in fewer steps than current techniques. Fabrication involves irradiation of a continuous wave laser or femtosecond laser onto a monolayer of self-assembled silica microspheres to grow silver nanoparticles along the silica microsphere surfaces by laser near-field reduction. The LSPR of superstructure array can be flexibly tuned to match the Raman excitation wavelengths from the visible to the infrared regions using different diameters of silica microspheres. The unique nanostructure formed can contribute to an increase in the sensitivity of SERS sensing. The fabricated superstructure array thus offers superior characteristics for the quantitative analysis of fluorescent perfluorooctanoic acid with a wide detection range from 11 ppb to 400 ppm.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/nano12060970
- https://www.mdpi.com/2079-4991/12/6/970/pdf?version=1647348342
- OA Status
- gold
- Cited By
- 32
- References
- 51
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4220879331
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- OpenAlex ID
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https://openalex.org/W4220879331Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/nano12060970Digital Object Identifier
- Title
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Plasmonic Superstructure Arrays Fabricated by Laser Near-Field Reduction for Wide-Range SERS Analysis of Fluorescent MaterialsWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2022Year of publication
- Publication date
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2022-03-15Full publication date if available
- Authors
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Shi Bai, Anming Hu, Youjin Hu, Ying Ma, Kotaro Obata, Koji SugiokaList of authors in order
- Landing page
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https://doi.org/10.3390/nano12060970Publisher landing page
- PDF URL
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https://www.mdpi.com/2079-4991/12/6/970/pdf?version=1647348342Direct link to full text PDF
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- OA status
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goldOpen access status per OpenAlex
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https://www.mdpi.com/2079-4991/12/6/970/pdf?version=1647348342Direct OA link when available
- Concepts
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Materials science, Laser, Femtosecond, Plasmon, Superstructure, Optoelectronics, Surface plasmon resonance, Raman scattering, Raman spectroscopy, Nanotechnology, Nanoparticle, Optics, Oceanography, Geology, PhysicsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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32Total citation count in OpenAlex
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2025: 10, 2024: 12, 2023: 7, 2022: 3Per-year citation counts (last 5 years)
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10Other works algorithmically related by OpenAlex
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