VO2 thermochromic metamaterial-based smart optical solar reflector
VO2 thermochromic metamaterial-based smart optical solar reflector
Optical solar reflector smart radiators are able to control the temperature of spacecraft. This work demonstrates a novel smart optical solar reflector using a patterned thermo-chromic VO2 plasmonic meta-surface design. The VO2 meta-surface combines the temperature induced phase transition of VO2 with plasmonic resonances resulting in a significant enhancement of the infrared absorption. The enhanced absorption obtained at a reduced VO2 coverage results in superior emittance tunability Δε and lower solar absorptance α compared to a corresponding thin-film reflector. An emittance tunability of 0.48 is obtained for the meta-reflector design, representing a 30% improvement compared to the unstructured film. Meta-surface based smart optical solar reflectors offer a new route toward energy-efficient and cost-effective passive thermal control systems of spacecraft and other surfaces.
2280-2286
Sun, Kai
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Riedel, Christoph A.
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Urbani, Alessandro
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Simeoni, Mirko
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Mengali, Sandro
e9ff1aee-6345-4414-af05-4d99308fdb73
Zalkovskij, Maksim
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Bilenberg, Brian
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De Groot, C.H.
92cd2e02-fcc4-43da-8816-c86f966be90c
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
20 June 2018
Sun, Kai
b7c648a3-7be8-4613-9d4d-1bf937fb487b
Riedel, Christoph A.
1ba99a96-d018-4c62-b0f0-67eb3d0b8e5e
Urbani, Alessandro
d68233a3-a42d-4291-b938-9bf05daa22b2
Simeoni, Mirko
8a24802d-647f-4fc1-b45e-87b922c9d990
Mengali, Sandro
e9ff1aee-6345-4414-af05-4d99308fdb73
Zalkovskij, Maksim
7f4cda26-12f7-4318-93e6-cf624ab5baed
Bilenberg, Brian
345bbbb4-8e4d-4330-b64e-6699cc81fbdd
De Groot, C.H.
92cd2e02-fcc4-43da-8816-c86f966be90c
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
Sun, Kai, Riedel, Christoph A., Urbani, Alessandro, Simeoni, Mirko, Mengali, Sandro, Zalkovskij, Maksim, Bilenberg, Brian, De Groot, C.H. and Muskens, Otto L.
(2018)
VO2 thermochromic metamaterial-based smart optical solar reflector.
ACS Photonics, 5 (6), .
(doi:10.1021/acsphotonics.8b00119).
Abstract
Optical solar reflector smart radiators are able to control the temperature of spacecraft. This work demonstrates a novel smart optical solar reflector using a patterned thermo-chromic VO2 plasmonic meta-surface design. The VO2 meta-surface combines the temperature induced phase transition of VO2 with plasmonic resonances resulting in a significant enhancement of the infrared absorption. The enhanced absorption obtained at a reduced VO2 coverage results in superior emittance tunability Δε and lower solar absorptance α compared to a corresponding thin-film reflector. An emittance tunability of 0.48 is obtained for the meta-reflector design, representing a 30% improvement compared to the unstructured film. Meta-surface based smart optical solar reflectors offer a new route toward energy-efficient and cost-effective passive thermal control systems of spacecraft and other surfaces.
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Accepted/In Press date: 29 January 2018
e-pub ahead of print date: 16 April 2018
Published date: 20 June 2018
Identifiers
Local EPrints ID: 421617
URI: http://eprints.soton.ac.uk/id/eprint/421617
ISSN: 2330-4022
PURE UUID: d8fd0fcf-6b78-4c6e-9850-4a9f87037830
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Date deposited: 18 Jun 2018 16:30
Last modified: 15 Jun 2024 01:42
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Contributors
Author:
Christoph A. Riedel
Author:
Alessandro Urbani
Author:
Mirko Simeoni
Author:
Sandro Mengali
Author:
Maksim Zalkovskij
Author:
Brian Bilenberg
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