Nanostructured plasmonic metapixels

Abstract State-of-the-art pixels for high-resolution microdisplays utilize reflective surfaces on top of electrical backplanes. Each pixel is a single fixed color and will usually only modulate the amplitude of light. With the rise of nanophotonics, a pixel’s relatively large surface area (~10 μm2),...

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Autores principales:	Calum Williams, Girish Rughoobur, Andrew J. Flewitt, Timothy D. Wilkinson
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e46e009000c643998fdfae739db9c870
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spelling	oai:doaj.org-article:e46e009000c643998fdfae739db9c8702021-12-02T11:41:09ZNanostructured plasmonic metapixels10.1038/s41598-017-08145-02045-2322https://doaj.org/article/e46e009000c643998fdfae739db9c8702017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08145-0https://doaj.org/toc/2045-2322Abstract State-of-the-art pixels for high-resolution microdisplays utilize reflective surfaces on top of electrical backplanes. Each pixel is a single fixed color and will usually only modulate the amplitude of light. With the rise of nanophotonics, a pixel’s relatively large surface area (~10 μm2), is in effect underutilized. Considering the unique optical phenomena associated with plasmonic nanostructures, the scope for use in reflective pixel technology for increased functionality is vast. Yet in general, low reflectance due to plasmonic losses, and sub-optimal design schemes, have limited the real-world application. Here we demonstrate the plasmonic metapixel; which permits high reflection capability whilst providing vivid, polarization switchable, wide color gamut filtering. Ultra-thin nanostructured metal-insulator-metal geometries result in the excitation of hybridized absorption modes across the visible spectrum. These modes include surface plasmons and quasi-guided modes, and by tailoring the absorption modes to exist either side of target wavelengths, we achieve pixels with polarization dependent multicolor reflection on mirror-like surfaces. Because the target wavelength is not part of a plasmonic process, subtractive color filtering and mirror-like reflection occurs. We demonstrate wide color-range pixels, RGB pixel designs, and in-plane Gaussian profile pixels that have the potential to enable new functionality beyond that of a conventional ‘square’ pixel.Calum WilliamsGirish RughooburAndrew J. FlewittTimothy D. WilkinsonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Calum Williams Girish Rughoobur Andrew J. Flewitt Timothy D. Wilkinson Nanostructured plasmonic metapixels
description	Abstract State-of-the-art pixels for high-resolution microdisplays utilize reflective surfaces on top of electrical backplanes. Each pixel is a single fixed color and will usually only modulate the amplitude of light. With the rise of nanophotonics, a pixel’s relatively large surface area (~10 μm2), is in effect underutilized. Considering the unique optical phenomena associated with plasmonic nanostructures, the scope for use in reflective pixel technology for increased functionality is vast. Yet in general, low reflectance due to plasmonic losses, and sub-optimal design schemes, have limited the real-world application. Here we demonstrate the plasmonic metapixel; which permits high reflection capability whilst providing vivid, polarization switchable, wide color gamut filtering. Ultra-thin nanostructured metal-insulator-metal geometries result in the excitation of hybridized absorption modes across the visible spectrum. These modes include surface plasmons and quasi-guided modes, and by tailoring the absorption modes to exist either side of target wavelengths, we achieve pixels with polarization dependent multicolor reflection on mirror-like surfaces. Because the target wavelength is not part of a plasmonic process, subtractive color filtering and mirror-like reflection occurs. We demonstrate wide color-range pixels, RGB pixel designs, and in-plane Gaussian profile pixels that have the potential to enable new functionality beyond that of a conventional ‘square’ pixel.
format	article
author	Calum Williams Girish Rughoobur Andrew J. Flewitt Timothy D. Wilkinson
author_facet	Calum Williams Girish Rughoobur Andrew J. Flewitt Timothy D. Wilkinson
author_sort	Calum Williams
title	Nanostructured plasmonic metapixels
title_short	Nanostructured plasmonic metapixels
title_full	Nanostructured plasmonic metapixels
title_fullStr	Nanostructured plasmonic metapixels
title_full_unstemmed	Nanostructured plasmonic metapixels
title_sort	nanostructured plasmonic metapixels
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/e46e009000c643998fdfae739db9c870
work_keys_str_mv	AT calumwilliams nanostructuredplasmonicmetapixels AT girishrughoobur nanostructuredplasmonicmetapixels AT andrewjflewitt nanostructuredplasmonicmetapixels AT timothydwilkinson nanostructuredplasmonicmetapixels
_version_	1718395491935322112

Nanostructured plasmonic metapixels

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