Dual color plasmonic pixels create a polarization controlled nano color palette

Li, Z., Clark, A. W. and Cooper, J. M. (2016) Dual color plasmonic pixels create a polarization controlled nano color palette. ACS Nano, 10(1), pp. 492-498. (doi: 10.1021/acsnano.5b05411) (PMID:26631346)

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Color filters based upon nanostructured metals have garnered significant interest in recent years, having been positioned as alternatives to the organic dye-based filters which provide color selectivity in image sensors, as nonfading “printing” technologies for producing images with nanometer pixel resolution, and as ultra-high-resolution, small foot-print optical storage and encoding solutions. Here, we demonstrate a plasmonic filter set with polarization-switchable color properties, based upon arrays of asymmetric cross-shaped nanoapertures in an aluminum thin-film. Acting as individual color-emitting nanopixels, the plasmonic cavity-apertures have dual-color selectivity, transmitting one of two visible colors, controlled by the polarization of the white light incident on the rear of the pixel and tuned by varying the critical dimensions of the geometry and periodicity of the array. This structural approach to switchable optical filtering enables a single nanoaperture to encode two information states within the same physical nanoaperture, an attribute we use here to create micro image displays containing duality in their optical information states.

Item Type:Articles
Additional Information:This work was supported by Royal Academy of Engineering (Grant Number 10216/103). The authors also wish to acknowledge China Scholarship Council (CSC) and the ERC Advanced Grant, Bio-Phononics (340117) for supporting this work.
Glasgow Author(s) Enlighten ID:Clark, Professor Alasdair and Cooper, Professor Jonathan
Authors: Li, Z., Clark, A. W., and Cooper, J. M.
College/School:College of Science and Engineering > School of Engineering > Biomedical Engineering
Journal Name:ACS Nano
Publisher:American Chemical Society
ISSN (Online):1936-086X
Copyright Holders:Copyright © 2016 American Chemical Society
First Published:First published in ACS Nano 10(1):492-498
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher.

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
561421Plasmon Enhanced Pyroelectric Nanoscale Trapping and SensingAlasdair ClarkThe Royal Academy of Engineering (RAE)10216/103ENG - BIOMEDICAL ENGINEERING