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Nonlocal effects in double fishnet metasurfaces nanostructured at deep subwavelength level as a path toward simultaneous sensing of multiple chemical analytes

Samo za registrovane korisnike
2016
Autori
Tanasković, Dragan
Obradov, Marko
Jakšić, Olga
Jakšić, Zoran
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentu
Apstrakt
Nanoplasmonic devices are among the most sensitive chemical sensors, with sensitivities reaching the single-molecule level. An especially convenient class of such sensors is that based on metasurfaces with subwavelength nanoholes, examples being extraordinary optical transmission arrays and double fishnet structures. Such structures ensure operation both in transmission and reflection mode and ensure high sensitivities and excellent coupling with external readout. In this paper we consider the possibility to tailor the response of aperture-based sensor structures by modifying the geometry of nanoholes at the deep subwavelength level through ensuring controlled use of nonlocal effects. We investigate the case where nonlocality is achieved by modifying the basic metamaterial fishnet structure (a metal-dielectric-metal sandwich with rectangular openings) by superposing additional subwavelength patterns, ensuring the appearance of new optical modes. The obtained unit cell superstructure wi...ll have multiple tailorable spectral peaks that will increase the selectivity at different wavelengths. The finite elements method was used for simulations of the proposed structures. As an example, we applied our results to the case of a benzene sensor, showing that its spectral properties and selectivity can be tuned by modifying geometry at a deep subwavelength scale. The obtained custom-designed spectral selectivity is convenient for multianalyte chemical sensing using a single structure.

Ključne reči:
Nanoplasmonics / Double fishnet metamaterials / Metasurfaces / Chemical sensing / Subwavelength apertures / Electromagnetic nonlocality / Surface plasmons polaritons
Izvor:
Photonics and Nanostructures-Fundamentals and Applications, 2016, 18, 36-42
Izdavač:
  • Elsevier
Finansiranje / projekti:
  • Mikro, nano-sistemi i senzori za primenu u elektroprivredi, procesnoj industriji i zaštiti životne sredine (RS-32008)

DOI: 10.1016/j.photonics.2015.12.003

ISSN: 1569-4410

WoS: 000371361500006

Scopus: 2-s2.0-84957715411
[ Google Scholar ]
2
1
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/1967
Kolekcije
  • Radovi istraživača / Researchers' publications
Institucija/grupa
IHTM
TY  - JOUR
AU  - Tanasković, Dragan
AU  - Obradov, Marko
AU  - Jakšić, Olga
AU  - Jakšić, Zoran
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1967
AB  - Nanoplasmonic devices are among the most sensitive chemical sensors, with sensitivities reaching the single-molecule level. An especially convenient class of such sensors is that based on metasurfaces with subwavelength nanoholes, examples being extraordinary optical transmission arrays and double fishnet structures. Such structures ensure operation both in transmission and reflection mode and ensure high sensitivities and excellent coupling with external readout. In this paper we consider the possibility to tailor the response of aperture-based sensor structures by modifying the geometry of nanoholes at the deep subwavelength level through ensuring controlled use of nonlocal effects. We investigate the case where nonlocality is achieved by modifying the basic metamaterial fishnet structure (a metal-dielectric-metal sandwich with rectangular openings) by superposing additional subwavelength patterns, ensuring the appearance of new optical modes. The obtained unit cell superstructure will have multiple tailorable spectral peaks that will increase the selectivity at different wavelengths. The finite elements method was used for simulations of the proposed structures. As an example, we applied our results to the case of a benzene sensor, showing that its spectral properties and selectivity can be tuned by modifying geometry at a deep subwavelength scale. The obtained custom-designed spectral selectivity is convenient for multianalyte chemical sensing using a single structure.
PB  - Elsevier
T2  - Photonics and Nanostructures-Fundamentals and Applications
T1  - Nonlocal effects in double fishnet metasurfaces nanostructured at deep subwavelength level as a path toward simultaneous sensing of multiple chemical analytes
VL  - 18
SP  - 36
EP  - 42
DO  - 10.1016/j.photonics.2015.12.003
ER  - 
@article{
author = "Tanasković, Dragan and Obradov, Marko and Jakšić, Olga and Jakšić, Zoran",
year = "2016",
abstract = "Nanoplasmonic devices are among the most sensitive chemical sensors, with sensitivities reaching the single-molecule level. An especially convenient class of such sensors is that based on metasurfaces with subwavelength nanoholes, examples being extraordinary optical transmission arrays and double fishnet structures. Such structures ensure operation both in transmission and reflection mode and ensure high sensitivities and excellent coupling with external readout. In this paper we consider the possibility to tailor the response of aperture-based sensor structures by modifying the geometry of nanoholes at the deep subwavelength level through ensuring controlled use of nonlocal effects. We investigate the case where nonlocality is achieved by modifying the basic metamaterial fishnet structure (a metal-dielectric-metal sandwich with rectangular openings) by superposing additional subwavelength patterns, ensuring the appearance of new optical modes. The obtained unit cell superstructure will have multiple tailorable spectral peaks that will increase the selectivity at different wavelengths. The finite elements method was used for simulations of the proposed structures. As an example, we applied our results to the case of a benzene sensor, showing that its spectral properties and selectivity can be tuned by modifying geometry at a deep subwavelength scale. The obtained custom-designed spectral selectivity is convenient for multianalyte chemical sensing using a single structure.",
publisher = "Elsevier",
journal = "Photonics and Nanostructures-Fundamentals and Applications",
title = "Nonlocal effects in double fishnet metasurfaces nanostructured at deep subwavelength level as a path toward simultaneous sensing of multiple chemical analytes",
volume = "18",
pages = "36-42",
doi = "10.1016/j.photonics.2015.12.003"
}
Tanasković, D., Obradov, M., Jakšić, O.,& Jakšić, Z.. (2016). Nonlocal effects in double fishnet metasurfaces nanostructured at deep subwavelength level as a path toward simultaneous sensing of multiple chemical analytes. in Photonics and Nanostructures-Fundamentals and Applications
Elsevier., 18, 36-42.
https://doi.org/10.1016/j.photonics.2015.12.003
Tanasković D, Obradov M, Jakšić O, Jakšić Z. Nonlocal effects in double fishnet metasurfaces nanostructured at deep subwavelength level as a path toward simultaneous sensing of multiple chemical analytes. in Photonics and Nanostructures-Fundamentals and Applications. 2016;18:36-42.
doi:10.1016/j.photonics.2015.12.003 .
Tanasković, Dragan, Obradov, Marko, Jakšić, Olga, Jakšić, Zoran, "Nonlocal effects in double fishnet metasurfaces nanostructured at deep subwavelength level as a path toward simultaneous sensing of multiple chemical analytes" in Photonics and Nanostructures-Fundamentals and Applications, 18 (2016):36-42,
https://doi.org/10.1016/j.photonics.2015.12.003 . .

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