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Highly transmissive subtractive color filters based on an all-dielectric metasurface incorporating TiO2 nanopillars

Koirala, Ishwor; Lee, Sang-Shin; Choi, Duk-Yong

Description

Transmissive subtractive color filters are proposed and demonstrated that take advantage of an all-dielectric metasurface based on a lattice of TiO2 nanopillars (NPs), rendering a high transmission efficiency that exceeds 90%. TiO2 NP elements have been created that exhibit a high aspect ratio. Specifically, a series of lithographic processes are conducted to form a narrow and deep hole in the photoresist, which is accompanied by atomic layer deposition of TiO2. A broad palette of vivid colors...[Show more]

dc.contributor.authorKoirala, Ishwor
dc.contributor.authorLee, Sang-Shin
dc.contributor.authorChoi, Duk-Yong
dc.date.accessioned2020-01-10T04:47:30Z
dc.date.available2020-01-10T04:47:30Z
dc.identifier.issn1094-4087
dc.identifier.urihttp://hdl.handle.net/1885/196919
dc.description.abstractTransmissive subtractive color filters are proposed and demonstrated that take advantage of an all-dielectric metasurface based on a lattice of TiO2 nanopillars (NPs), rendering a high transmission efficiency that exceeds 90%. TiO2 NP elements have been created that exhibit a high aspect ratio. Specifically, a series of lithographic processes are conducted to form a narrow and deep hole in the photoresist, which is accompanied by atomic layer deposition of TiO2. A broad palette of vivid colors encompassing the visible band has been obtained by adjusting the NP diameter for a constant duty ratio of 0.35. For the NP resonator, the electric and magnetic field profiles in conjunction with the scattering cross-sections have been meticulously investigated to theoretically validate that the resonant transmission dips are primarily governed by the simultaneous excitation of an electric dipole and a magnetic dipole via Mie scattering.
dc.description.sponsorshipNational Research Foundation of Korea (NRF), funded by the Korean government (MSIP) (No. 2016R1A2B2010170); Kwangwoon University; Australian Research Council Future Fellowship (FT110100853, Dr. Duk-Yong Choi).
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherOptical Society of America
dc.rights© 2018 Optical Society of America
dc.sourceOptics Express
dc.titleHighly transmissive subtractive color filters based on an all-dielectric metasurface incorporating TiO2 nanopillars
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume26
dc.date.issued2018
local.identifier.absfor020504 - Photonics, Optoelectronics and Optical Communications
local.identifier.absfor091009 - Microtechnology
local.identifier.ariespublicationu4485658xPUB1840
local.type.statusPublished Version
local.contributor.affiliationKoirala, Ishwor, Kwangwoon University
local.contributor.affiliationLee, Sang-Shin, Kwangwoon University
local.contributor.affiliationChoi, Duk-Yong, College of Science, ANU
dc.relationhttp://purl.org/au-research/grants/arc/FT110100853
local.bibliographicCitation.issue14
local.identifier.doi10.1364/OE.26.018320
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2019-08-25T08:19:57Z
local.identifier.scopusID2-s2.0-85049557845
local.identifier.thomsonID000438209100060
dcterms.accessRightsOpen Access
dc.provenance© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
dc.rights.licenseOSA Open Access Publishing Agreement
CollectionsANU Research Publications

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