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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Published in | Nanophotonics (Berlin, Germany) Vol. 8; no. 2; pp. 325 - 329 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Berlin
De Gruyter
01.02.2019
Walter de Gruyter GmbH |
Subjects | |
Online Access | Get full text |
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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. |
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ISSN: | 2192-8606 2192-8614 |
DOI: | 10.1515/nanoph-2018-0108 |