| Issue |
EPJ Appl. Metamat.
Volume 9, 2022
Metamaterials for Novel Wave Phenomena in Microwaves, Optics, and Mechanics
|
|
|---|---|---|
| Article Number | 11 | |
| Number of page(s) | 7 | |
| DOI | https://doi.org/10.1051/epjam/2022009 | |
| Published online | 17 June 2022 | |
https://doi.org/10.1051/epjam/2022009
Research Article
Multiresonant metasurface for Raman spectroscopy beyond single molecule detection level
1
Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Torun, ul. Grudziadzka 5, 87–100 Torun, Poland
2
Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
3
Physics Department, Universität Hamburg UHH, Luruper Chaussee 149, 22761 Hamburg, Germany
* e-mail: s.izadshenas@doktorant.umk.pl
Received:
22
November
2021
Accepted:
7
March
2022
Published online: 17 June 2022
A metasurface in the metal-insulator-grating configuration is designed and optimised to support enhancement of coherent Raman signal of selected molecules orders of magnitude above the single-molecule detection threshold. The tunability is demonstrated by adjusting the structure to match selected Raman peaks of rhodamine, however, its spectral response is broad enough to cover a range of Raman shifts. Finally, the grating allows switching between distinct values of Raman shift with a single metasurface illuminated at different angles.
Key words: metasurface / coherent anti-stokes Raman scattering / surface plasmon / plasmonic grating / molecular spectroscopy
© S. Izadshenas et al., Published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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