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Radiation: Applications

Radiation: Applications

The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...

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Updated: Jun 29, 2026

Fabrication of Nano-engineered Transparent Conducting Oxides by Pulsed Laser Deposition

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Published on: February 27, 2013

Tailoring High-Entropy Oxides as Emerging Radiative Materials for Daytime Passive Cooling.

Costanza Borghesi^1,2, Claudia Fabiani^3,4, Roberto Bondi⁵

¹Department of Civil & Environmental Engineering (DICA), University of Perugia, Via G. Duranti 93, Perugia 06125, Italy.

Chemistry of Materials : a Publication of the American Chemical Society

|January 1, 2024

Summary

This summary is machine-generated.

High-entropy materials show promise for daytime radiative cooling. This study uses advanced computational methods to identify promising oxide candidates for affordable, efficient passive cooling coatings.

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Area of Science:

Materials Science
Condensed Matter Physics
Nanotechnology

Background:

High-entropy materials are extensively researched for energy applications.
Radiative cooling offers a passive method for thermal management.
Developing cost-effective and efficient materials for radiative cooling is crucial.

Purpose of the Study:

To investigate the potential of selected oxides and their alloys for daytime radiative cooling.
To identify candidate materials with strong radiative properties suitable for passive cooling applications.
To assess the affordability and compatibility of these materials with commercial fabrication processes.

Main Methods:

Utilizing density functional theory (DFT) for an unbiased description of material properties.
Employing the finite difference method for scattering-free analysis.
Evaluating structural, electronic, and dynamic features of candidate materials.

Main Results:

Identified specific oxide and alloy compositions with strong radiative properties.
Demonstrated the potential for these materials to achieve significant passive cooling.
Confirmed the affordability and compatibility of candidate materials for coating fabrication.

Conclusions:

Selected high-entropy oxides and their alloys are promising for daytime radiative cooling.
Computational methods provide accurate insights into material performance for cooling applications.
These materials offer a viable path towards cost-effective and scalable passive cooling solutions.