Polarization tunable all-dielectric color filters based on cross-shaped Si nanoantennas

Abstract Polarization sensitive and insensitive color filters have important applications in the area of nano-spectroscopy and CCD imaging applications. Metallic nanostructures provide an efficient way to design and engineer ultrathin color filters. These nanostructures have capability to split the...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Vishal Vashistha, Gayatri Vaidya, Pawel Gruszecki, Andriy E. Serebryannikov, Maciej Krawczyk
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/45b281964184492ca4c58df7b926457f
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:45b281964184492ca4c58df7b926457f
record_format	dspace
spelling	oai:doaj.org-article:45b281964184492ca4c58df7b926457f2021-12-02T15:05:29ZPolarization tunable all-dielectric color filters based on cross-shaped Si nanoantennas10.1038/s41598-017-07986-z2045-2322https://doaj.org/article/45b281964184492ca4c58df7b926457f2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07986-zhttps://doaj.org/toc/2045-2322Abstract Polarization sensitive and insensitive color filters have important applications in the area of nano-spectroscopy and CCD imaging applications. Metallic nanostructures provide an efficient way to design and engineer ultrathin color filters. These nanostructures have capability to split the white light into fundamental colors and enable color filters with ultrahigh resolution but their efficiency can be restricted due to high losses in metals especially at the visible wavelengths. In this work, we demonstrate all-dielectric color filters based on Si nanoantennas, which are sensitive to incident-wave polarization and, thus, tunable with the aid of polarization angle variation. Two different information can be encoded in two different polarization states in one nanostructure. The nanoantenna based pixels are highly efficient and can provide high quality of colors, in particular, due to low losses in Si at optical frequencies. We experimentally demonstrate that a variety of colors can be achieved by changing the physical size of the nonsymmetric cross-shaped nanoantennas. The proposed devices allow to cover an extended gamut of colors on CIE-1931 chromaticity diagram owing to the existence of high-quality resonances in Si nanoantennas. Significant tunability of the suggested color filters can be achieved by varying polarization angle in both transmission and reflection mode. Additional tunability can be obtained by switching between transmission and reflection modes.Vishal VashisthaGayatri VaidyaPawel GruszeckiAndriy E. SerebryannikovMaciej KrawczykNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Vishal Vashistha Gayatri Vaidya Pawel Gruszecki Andriy E. Serebryannikov Maciej Krawczyk Polarization tunable all-dielectric color filters based on cross-shaped Si nanoantennas
description	Abstract Polarization sensitive and insensitive color filters have important applications in the area of nano-spectroscopy and CCD imaging applications. Metallic nanostructures provide an efficient way to design and engineer ultrathin color filters. These nanostructures have capability to split the white light into fundamental colors and enable color filters with ultrahigh resolution but their efficiency can be restricted due to high losses in metals especially at the visible wavelengths. In this work, we demonstrate all-dielectric color filters based on Si nanoantennas, which are sensitive to incident-wave polarization and, thus, tunable with the aid of polarization angle variation. Two different information can be encoded in two different polarization states in one nanostructure. The nanoantenna based pixels are highly efficient and can provide high quality of colors, in particular, due to low losses in Si at optical frequencies. We experimentally demonstrate that a variety of colors can be achieved by changing the physical size of the nonsymmetric cross-shaped nanoantennas. The proposed devices allow to cover an extended gamut of colors on CIE-1931 chromaticity diagram owing to the existence of high-quality resonances in Si nanoantennas. Significant tunability of the suggested color filters can be achieved by varying polarization angle in both transmission and reflection mode. Additional tunability can be obtained by switching between transmission and reflection modes.
format	article
author	Vishal Vashistha Gayatri Vaidya Pawel Gruszecki Andriy E. Serebryannikov Maciej Krawczyk
author_facet	Vishal Vashistha Gayatri Vaidya Pawel Gruszecki Andriy E. Serebryannikov Maciej Krawczyk
author_sort	Vishal Vashistha
title	Polarization tunable all-dielectric color filters based on cross-shaped Si nanoantennas
title_short	Polarization tunable all-dielectric color filters based on cross-shaped Si nanoantennas
title_full	Polarization tunable all-dielectric color filters based on cross-shaped Si nanoantennas
title_fullStr	Polarization tunable all-dielectric color filters based on cross-shaped Si nanoantennas
title_full_unstemmed	Polarization tunable all-dielectric color filters based on cross-shaped Si nanoantennas
title_sort	polarization tunable all-dielectric color filters based on cross-shaped si nanoantennas
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/45b281964184492ca4c58df7b926457f
work_keys_str_mv	AT vishalvashistha polarizationtunablealldielectriccolorfiltersbasedoncrossshapedsinanoantennas AT gayatrivaidya polarizationtunablealldielectriccolorfiltersbasedoncrossshapedsinanoantennas AT pawelgruszecki polarizationtunablealldielectriccolorfiltersbasedoncrossshapedsinanoantennas AT andriyeserebryannikov polarizationtunablealldielectriccolorfiltersbasedoncrossshapedsinanoantennas AT maciejkrawczyk polarizationtunablealldielectriccolorfiltersbasedoncrossshapedsinanoantennas
_version_	1718388826173341696

Polarization tunable all-dielectric color filters based on cross-shaped Si nanoantennas

Ejemplares similares