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Materials 2017, 10(4), 383; doi:10.3390/ma10040383

Plasmonic Colour Filters Based on Coaxial Holes in Aluminium

1
Department of Electrical and Electronic Engineering, The University of Melbourne, Melbourne, VIC 3010, Australia
2
Melbourne Centre for Nanofabrication, Australian National Fabrication Facility, Clayton, VIC 3168, Australia
3
Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 2601, Australia
4
School of Physics, The University of Melbourne, Melbourne, VIC 3010, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Ingo Dierking
Received: 2 February 2017 / Revised: 23 March 2017 / Accepted: 24 March 2017 / Published: 4 April 2017
View Full-Text   |   Download PDF [1351 KB, uploaded 4 April 2017]   |  

Abstract

Aluminum is an alternative plasmonic material in the visible regions of the spectrum due to its attractive properties such as low cost, high natural abundance, ease of processing, and complementary metal-oxide-semiconductor (CMOS) and liquid crystal display (LCD) compatibility. Here, we present plasmonic colour filters based on coaxial holes in aluminium that operate in the visible range. Using both computational and experimental methods, fine-tuning of resonance peaks through precise geometric control of the coaxial holes is demonstrated. These results will lay the basis for the development of filters in high-resolution liquid crystal displays, RGB-spatial light modulators, liquid crystal over silicon devices and novel displays. View Full-Text
Keywords: nanophotonics; nanoscale devices; nanofabrication nanophotonics; nanoscale devices; nanofabrication
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Rajasekharan Unnithan, R.; Sun, M.; He, X.; Balaur, E.; Minovich, A.; Neshev, D.N.; Skafidas, E.; Roberts, A. Plasmonic Colour Filters Based on Coaxial Holes in Aluminium. Materials 2017, 10, 383.

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