Multiperiodic nanohole array for high precision sensing

In this article, we present a multiperiodic nanohole array structure for improved sensing. The structure consists a series of rows of nanoholes, each having a different period in an ascending order. A monochromatic source illuminates the structure, and a resonance condition is met for the row having...

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Bibliographic Details
Published inNanophotonics (Berlin, Germany) Vol. 8; no. 2; pp. 325 - 329
Main Authors Blanchard-Dionne, Andre-Pierre, Meunier, Michel
Format Journal Article
LanguageEnglish
Published Berlin De Gruyter 01.02.2019
Walter de Gruyter GmbH
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Summary:In this article, we present a multiperiodic nanohole array structure for improved sensing. The structure consists a series of rows of nanoholes, each having a different period in an ascending order. A monochromatic source illuminates the structure, and a resonance condition is met for the row having a momentum matching Bloch wave, which leads to extraordinary optical transmission. With this new plasmonic structure, the sensing signal can be retrieved using the spatial position of the transmission maxima. This setup requires a simple optical setup while achieving increased resolution and accuracy. A resolution of 4.6×10 refractive index units is achieved, which is comparable to surface plasmon resonance system based on the Kretchmann configuration.
ISSN:2192-8606
2192-8614
DOI:10.1515/nanoph-2018-0108