Guided-mode resonance on pedestal and half-buried high-contrast gratings for biosensing applications

Optical sensors typically provide compact, fast and precise means of performing quantitative measures for almost any kind of measurand that is usually probed electronically. High-contrast grating (HCG) resonators are known to manifest an extremely sharp and sensitive optical resonance and can consti...

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Autores principales:	Finco Giovanni, Bideskan Mehri Ziaee, Vertchenko Larissa, Beliaev Leonid Y., Malureanu Radu, Lindvold Lars René, Takayama Osamu, Andersen Peter E., Lavrinenko Andrei V.
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	biosensing dielectric resonator guided-mode resonance high-contrast grating Physics QC1-999
Acceso en línea:	https://doaj.org/article/fdc7de4a517c4dc1b08ab2f216e36cf0
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spelling	oai:doaj.org-article:fdc7de4a517c4dc1b08ab2f216e36cf02021-12-05T14:10:56ZGuided-mode resonance on pedestal and half-buried high-contrast gratings for biosensing applications2192-861410.1515/nanoph-2021-0347https://doaj.org/article/fdc7de4a517c4dc1b08ab2f216e36cf02021-09-01T00:00:00Zhttps://doi.org/10.1515/nanoph-2021-0347https://doaj.org/toc/2192-8614Optical sensors typically provide compact, fast and precise means of performing quantitative measures for almost any kind of measurand that is usually probed electronically. High-contrast grating (HCG) resonators are known to manifest an extremely sharp and sensitive optical resonance and can constitute a highly suitable sensing platform. In this paper we present two advanced high-contrast grating designs improving the sensing performances of conventional implementations. These configurations, namely pedestal and half-buried HCGs, allow to enhance the shift of the photonic resonance while maintaining the spectral features of the standard configuration. First, the spectral feature of the HCGs was numerically optimized to express the sharpest possible resonance when the structure is immersed in serum. Second, the sensing properties of conventional and advanced HCG implementations were studied by modelling the biological entities to be sensed as a thin dielectric coating layer of increasing thickness. Pedestal HCGs were found to provide a ∼12% improvement in sensitivity and a six-fold improvement in resonance quality factor (Q-factor), while buried HCGs resulted in a ∼58% improvement in sensitivity at the expense of a slightly broader resonance. Such structures may serve as an improved sensitive biosensing platform for near-infrared spectroscopy.Finco GiovanniBideskan Mehri ZiaeeVertchenko LarissaBeliaev Leonid Y.Malureanu RaduLindvold Lars RenéTakayama OsamuAndersen Peter E.Lavrinenko Andrei V.De Gruyterarticlebiosensingdielectric resonatorguided-mode resonancehigh-contrast gratingPhysicsQC1-999ENNanophotonics, Vol 10, Iss 17, Pp 4289-4296 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	biosensing dielectric resonator guided-mode resonance high-contrast grating Physics QC1-999
spellingShingle	biosensing dielectric resonator guided-mode resonance high-contrast grating Physics QC1-999 Finco Giovanni Bideskan Mehri Ziaee Vertchenko Larissa Beliaev Leonid Y. Malureanu Radu Lindvold Lars René Takayama Osamu Andersen Peter E. Lavrinenko Andrei V. Guided-mode resonance on pedestal and half-buried high-contrast gratings for biosensing applications
description	Optical sensors typically provide compact, fast and precise means of performing quantitative measures for almost any kind of measurand that is usually probed electronically. High-contrast grating (HCG) resonators are known to manifest an extremely sharp and sensitive optical resonance and can constitute a highly suitable sensing platform. In this paper we present two advanced high-contrast grating designs improving the sensing performances of conventional implementations. These configurations, namely pedestal and half-buried HCGs, allow to enhance the shift of the photonic resonance while maintaining the spectral features of the standard configuration. First, the spectral feature of the HCGs was numerically optimized to express the sharpest possible resonance when the structure is immersed in serum. Second, the sensing properties of conventional and advanced HCG implementations were studied by modelling the biological entities to be sensed as a thin dielectric coating layer of increasing thickness. Pedestal HCGs were found to provide a ∼12% improvement in sensitivity and a six-fold improvement in resonance quality factor (Q-factor), while buried HCGs resulted in a ∼58% improvement in sensitivity at the expense of a slightly broader resonance. Such structures may serve as an improved sensitive biosensing platform for near-infrared spectroscopy.
format	article
author	Finco Giovanni Bideskan Mehri Ziaee Vertchenko Larissa Beliaev Leonid Y. Malureanu Radu Lindvold Lars René Takayama Osamu Andersen Peter E. Lavrinenko Andrei V.
author_facet	Finco Giovanni Bideskan Mehri Ziaee Vertchenko Larissa Beliaev Leonid Y. Malureanu Radu Lindvold Lars René Takayama Osamu Andersen Peter E. Lavrinenko Andrei V.
author_sort	Finco Giovanni
title	Guided-mode resonance on pedestal and half-buried high-contrast gratings for biosensing applications
title_short	Guided-mode resonance on pedestal and half-buried high-contrast gratings for biosensing applications
title_full	Guided-mode resonance on pedestal and half-buried high-contrast gratings for biosensing applications
title_fullStr	Guided-mode resonance on pedestal and half-buried high-contrast gratings for biosensing applications
title_full_unstemmed	Guided-mode resonance on pedestal and half-buried high-contrast gratings for biosensing applications
title_sort	guided-mode resonance on pedestal and half-buried high-contrast gratings for biosensing applications
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/fdc7de4a517c4dc1b08ab2f216e36cf0
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Guided-mode resonance on pedestal and half-buried high-contrast gratings for biosensing applications

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