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VO2 thermochromic metamaterial-based smart optical solar reflector

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.
2330-4022
2280-2286
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
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), 2280-2286. (doi:10.1021/acsphotonics.8b00119).

Record type: Article

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
ORCID for C.H. De Groot: ORCID iD orcid.org/0000-0002-3850-7101
ORCID for Otto L. Muskens: ORCID iD orcid.org/0000-0003-0693-5504

Catalogue record

Date deposited: 18 Jun 2018 16:30
Last modified: 17 Dec 2019 05:23

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Contributors

Author: Kai Sun
Author: Christoph A. Riedel
Author: Alessandro Urbani
Author: Mirko Simeoni
Author: Sandro Mengali
Author: Maksim Zalkovskij
Author: Brian Bilenberg
Author: C.H. De Groot ORCID iD
Author: Otto L. Muskens ORCID iD

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