Title: | Refractometric Sensing with Periodic Nano-Indented Arrays: Effect of Structural Dimensions |
Author: |
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Date: | 2019-02-21 |
Language: | English |
Scope: | 897 |
University/Institute: | Háskólinn í Reykjavík Reykjavik University |
School: | Tækni- og verkfræðideild (HR) School of Science and Engineering (RU) |
Series: | Sensors;19(4) |
ISSN: | 1424-8220 |
DOI: | 10.3390/s19040897 |
Subject: | Electrical and Electronic Engineering; Analytical Chemistry; Atomic and Molecular Physics, and Optics; Biochemistry; Refractometer; Plasmonic sensors; Biosensors; Nanocups; Periodic structures; Surface plasmon resonance; Gas detectors; Sensors; Rafmagnsverkfræði; Rafeindaverkfræði; Efnafræði; Atómfræði; Sameindafræði; Lífefnafræði; Rafgas; Litrófsgreining; Nanótækni |
URI: | https://hdl.handle.net/20.500.11815/2081 |
Citation:Carney, D. J., Svavarsson, H. G., Hemmati, H., Fannin, A., Yoon, J. W., & Magnusson, R. (2019). Refractometric Sensing with Periodic Nano-Indented Arrays: Effect of Structural Dimensions. Sensors, 19(4), 897. https://doi.org/10.3390/s19040897
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Abstract:Fabrication and sensor application of a simple plasmonic structure is described in this paper. The sensor element consists of nano-patterned gold film brought about from two-dimensional periodic photoresist templates created by holographic laser interference lithography. Reflectance spectroscopy revealed that the sensor exhibits significant refractive index sensitivity. A linear relationship between shifts in plasmonic resonances and changes in the refractive index were demonstrated. The sensor has a bulk sensitivity (SB) of 880 nm/refractive index unit and work under normal incidence conditions. This sensitivity exceeded that of many common types of plasmonic sensors with more intricate structures. A modeled spectral response was used to study the effect of its geometrical dimensions on plasmonic behavior. A qualitative agreement between the experimental spectra and modeled ones was obtained.
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Description:Publisher's version.(útgefin grein)
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Rights:©2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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