Passive radiative thermal management using phase-change metasurfaces

Realizing innovative composite materials with passive thermal management capabilities and minimal ecological footprints is a challenging but much sought-after goal that would have a transformative effect on renewable energy sciences. We demonstrate an environmentally friendly metasurface utilizing v...

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Published in:JPhys photonics Vol. 7; no. 2; pp. 25028 - 25037
Main Authors: Singh, Leena, Qiu, Erbin, Cardin, Andrew E, Chen, Aiping, Luk, Ting S, Schuller, Jon A, Dalvit, Diego A R, Schuller, Ivan K, Kort-Kamp, Wilton J M, Azad, Abul K
Format: Journal Article
Language:English
Published: Bristol IOP Publishing 30.04.2025
Subjects:
Absorptivity
Ambient temperature
Composite materials
Emissivity
metasurface
Metasurfaces
Near infrared radiation
Phase transitions
phase-change transition
radiative cooling
solar absorber
Solar radiation
thermal emitter
Thermal management
Transition temperature
Vanadium dioxide
Vanadium oxides
ISSN:2515-7647, 2515-7647
Online Access:Get full text
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Summary:Realizing innovative composite materials with passive thermal management capabilities and minimal ecological footprints is a challenging but much sought-after goal that would have a transformative effect on renewable energy sciences. We demonstrate an environmentally friendly metasurface utilizing vanadium dioxide (VO 2 ) that offers responsiveness to ambient temperature and potentially long-term stability. The metasurface enables passive thermal management by self-adjusting its absorptivity and emissivity response over a broad bandwidth ranging from visible to mid-infrared (IR) wavelengths. Above the VO 2 phase transition the metasurface exhibits increased mid-IR emissivity and reduced visible/near-IR absorptivity, creating an efficient radiative emission channel in the first atmospheric transparency window with reduced absorption of solar radiation. In contrast, below VO 2 ’s transition temperature, the metasurface increasingly absorbs sun light while minimizing mid-IR radiative heat losses. Moreover, a functional silicon layer eliminates the need for an additional capping layer commonly employed to protect VO 2 from environmental degradation. The additional protective layer often impedes the use and performance of VO 2 based devices in terrestrial as well as spacecraft applications. Therefore, the proposed durable and eco-friendly metasurface will be an excellent candidate for essential passive thermal regulation systems across residential and terrestrial applications.
Bibliography:JPPHOTON-100772.R1
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USDOE
ISSN:2515-7647
2515-7647
DOI:10.1088/2515-7647/adc9eb