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Open AccessArticle

Plasmonic Colour Filters Based on Coaxial Holes in Aluminium

Department of Electrical and Electronic Engineering, The University of Melbourne, Melbourne, VIC 3010, Australia
Melbourne Centre for Nanofabrication, Australian National Fabrication Facility, Clayton, VIC 3168, Australia
Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 2601, Australia
School of Physics, The University of Melbourne, Melbourne, VIC 3010, Australia
Author to whom correspondence should be addressed.
Academic Editor: Ingo Dierking
Materials 2017, 10(4), 383;
Received: 2 February 2017 / Revised: 23 March 2017 / Accepted: 24 March 2017 / Published: 4 April 2017
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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MDPI and ACS Style

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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