VO<sub>2</sub> particle-based intelligent metasurface with perfect infrared emission for the spacecraft thermal control

Bowei Xie; Jian Dong; Junming Zhao; Linhua Liu; Linhua Liu; Xin Fu; Zaiteng Zhai

doi:10.1364/AO.475672

Applied Optics
Vol. 61,
Issue 35,
pp. 10538-10547
(2022)
•https://doi.org/10.1364/AO.475672

VO₂ particle-based intelligent metasurface with perfect infrared emission for the spacecraft thermal control

Bowei Xie, Jian Dong, Junming Zhao, Linhua Liu, Xin Fu, and Zaiteng Zhai

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Bowei Xie, Jian Dong, Junming Zhao, Linhua Liu, Xin Fu, and Zaiteng Zhai, "VO₂ particle-based intelligent metasurface with perfect infrared emission for the spacecraft thermal control," Appl. Opt. 61, 10538-10547 (2022)

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Abstract

Thermochromism film can automatically adjust its emittance without additional energy consumption, which shows great prospect in the application of spacecraft thermal control. However, it is still challenging to achieve a large infrared emittance at a high temperature and emittance tunability of the thermochromism film. In this work, we propose a ${{\rm VO}_2}$ particle-based intelligent metasurface for spacecraft thermal control, which consists of a square lattice array of hollow spheroidal ${{\rm VO}_2}$ particles on Au substrate. The metasurface with a ${{\rm VO}_2}$ particle having a large aspect ratio (${\sim}{10}$) displays perfect emission throughout the entire mid-infrared spectral range. The emittance tunability can exceed 0.63 with total normal emittance of 0.85. The underlying mechanisms involved in the metasurface are attributed to particle-dependent scattering, by which the infrared emittance is dramatically enhanced for the metallic state and restricted for the dielectric state. In addition, the infrared emittance at a high temperature and emittance tunability of the metasurface remain large for incident angles up to 60°. To the best of our knowledge, this work proposes the first thermochromism film structure with perfect infrared emission, which could accelerate the development and practical application of the thermochromic film in the field of spacecraft.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Film Type	Film Structure and Materials	$ε$ ^a	$Δ ε$	Spectral Range	EXP/SIM
Particle composite film	${V O}_{2}$ particle composite film [14]	0.65^b	0.45	Entire infrared	EXP
Particle composite film	${C a F}_{2} @ {V O}_{2}$ particles composite film [15]	0.83	0.36	4–14 µm	EXP
Multilayer film	${V O}_{2} / {S i O}_{2} / A u$ multilayer [16]	0.71	0.49	2.5–25 µm	EXP
	$S i / {V O}_{2} / {B a F}_{2} / A u$ multilayer [17]	0.64	0.49	2–25 µm	EXP
	${V O}_{2} / Z n S e / {V O}_{2} / Z n S e / A u$ multilayer [18]	0.77	0.69	2–30 µm	SIM
	Superposed FP multilayer [19]	0.91	0.70	2.5–30 µm	SIM
Photonic crystal film	Patterned ${V O}_{2}$ metasurface [21]	0.75	0.48	2.5–25 µm	EXP
	${V O}_{2} - S i$ microparticle-based paint [22]	0.70	0.594	2.5–30 µm	SIM
	Trapezoidal ${V O}_{2} - G e$ multilayer [23]	0.87	0.67	8–13 µm	SIM
	Lattice arrayed ${V O}_{2}$ coating [24]	0.90	0.70	8–13 µm	EXP
This work	${V O}_{2}$ particle-based metasurface ( $ξ = 10.0$ )	0.99	0.26	2.5–30 µm	SIM
This work	${V O}_{2}$ particle-based metasurface ( $ξ = 1.5$ )	0.85	0.63	2.5–30 µm	SIM

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Applied Optics