Reducing temperature swing of space objects with temperature-adaptive solar or radiative coating

Editorial Material Chemistry, Physical

All-weather thermal regulation coatings

Kedar Hippalgaonkar

Summary: Thermally responsive coatings can save energy in buildings and have the potential for all-weather temperature regulation by utilizing radiative cooling in summer and insulation in winter.

JOULE (2022)

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Article Nanoscience & Nanotechnology

Passive and Dynamic Phase-Change-Based Radiative Cooling in Outdoor Weather

Xiudong Xu et al.

Summary: The study presents a dynamic radiative cooler based on phase change materials for outdoor weather conditions. The use of engineered phase-change material, reconfigurable cavity, and practical selective-filtering method enables the realization of dynamic radiative cooling in actual weather conditions.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Nanoscience & Nanotechnology

VO2 metasurface smart thermal emitter with high visual transparency for passive radiative cooling regulation in space and terrestrial applications

Kai Sun et al.

Summary: This study demonstrates a visually transparent, smart radiator panel with reduced solar absorption using high-quality VO2 thin films and plasmonic enhancement effects. It offers a new approach for thermal management in applications requiring visual transparency.

NANOPHOTONICS (2022)

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Article Chemistry, Physical

Extraterrestrial photosynthesis by Chan'E-5 lunar soil

Yingfang Yao et al.

Summary: With significant efforts being made towards manned deep space exploration, the development of a lunar life support system for long-term exploration is technologically important and scientifically interesting. Utilizing lunar in situ resource utilization provides an opportunity to supply the necessary materials for lunar habitation and travel. Analysis of the structure and composition of the Chang'E-5 lunar soil sample suggests its potential for lunar solar energy conversion, acting as an extraterrestrial photosynthetic catalyst. By evaluating its performance as a photo. voltaic-driven electrocatalyst, photocatalyst, and photothermal catalyst, full water splitting and CO2 conversion can be achieved using solar energy, water, and lunar soil, resulting in the production of essential resources for lunar life, including O-2, H-2, CH4, and CH3OH. Therefore, a potentially available extraterrestrial photosynthesis pathway on the moon is proposed, which could contribute to the development of a zero-energy consumption extraterrestrial life support system.

JOULE (2022)

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Article Optics

Design and Modelling of Metal-Oxide Nanodisk Arrays for Structural Colors and UV-Blocking Functions in Solar Cell Glass Covers

Albert Peralta Amores et al.

Summary: We present a multifunctional structural coloration strategy for solar cell glass covers based on all-dielectric nanoscatterer arrays. By adjusting the lattice period, a rich palette of reflected colors with narrow band reflectance can be achieved. The proposed color-cover designs also reduce the transmittance of UV radiation, preventing degradation of the encapsulation materials and increasing the lifetime expectancy of a solar panel.

PHOTONICS (2022)

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Article Multidisciplinary Sciences

Scalable thermochromic smart windows with passive radiative cooling regulation

Shancheng Wang et al.

Summary: Researches have developed scalable smart windows that can automatically regulate radiative cooling capacity while maintaining transparency and modulating performance, suitable for self-adapting applications in different climate zones.

SCIENCE (2021)

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Article Multidisciplinary Sciences

Temperature-adaptive radiative coating for all-season household thermal regulation

Kechao Tang et al.

Summary: This study focuses on developing a mechanically flexible coating that can adjust its thermal emittance at different ambient temperatures to improve energy efficiency. The temperature-adaptive radiative coating optimizes solar energy absorption and automatically switches thermal emittance based on ambient temperatures, outperforming existing roof coatings for energy saving in most climates.

SCIENCE (2021)

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Article Chemistry, Multidisciplinary

Digital Tuning of the Transition Temperature of Epitaxial VO2 Thin Films on MgF2 Substrates by Strain Engineering

Sebastian A. Howard et al.

Summary: This study successfully demonstrated the tuning of the metal-to-insulator transition (MIT) temperature of VO2 using MgF2 substrates and epitaxial films. By optimizing growth parameters, different orientations of VO2/MgF2 films were synthesized with transition temperatures controlled precisely through strain engineering.

ADVANCED MATERIALS INTERFACES (2021)

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Article Chemistry, Multidisciplinary

An Integrated Thermal-Electrical Model for Simulations of Battery Behavior in CubeSats

Sara Vega Martinez et al.

Summary: This study introduces an integrated thermal-electrical simulation model that considers the thermal and electrical effects of batteries and photovoltaic panels for CubeSat subsystem development. The model can estimate battery temperature and energy conditions, and also analyses the performance of photovoltaic panels affected by irradiance and temperature during orbit.

APPLIED SCIENCES-BASEL (2021)

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Article Engineering, Aerospace

Thermally adaptive axisymmetric trusses for satellite platforms

M. M. Toropova

Summary: This article describes a lightweight truss design with anisotropic thermal expansion characteristics, designed to passively accommodate large temperature variations around the Earth's orbit. The trusses prevent misalignment of optical systems and eliminate thermal expansion mismatch stresses at member junction points, with material combinations chosen based on platform size to provide maximum stiffness or structural efficiency.

ACTA ASTRONAUTICA (2021)

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Proceedings Paper Engineering, Mechanical

On the use of shape memory alloys for deployable passive heat radiators in space satellites

A. Bacciotti et al.

Summary: This study presents a multifunctional structure aimed at developing a thermal control device that can be deployed through passive actuation, combining a Pulsating Heat Pipe and Shape Memory Alloy wire. The results indicate that the system can carry out folding and unfolding cycles with rotation angles greater than 80 degrees only when the wire is subjected to uniform temperature distribution, whereas in the case of temperature gradient, the achievable rotation angle is about 20 degrees.

49TH ITALIAN ASSOCIATION FOR STRESS ANALYSIS CONFERENCE (AIAS 2020) (2021)

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Article Thermodynamics