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Updated: May 23, 2025

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

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Published on: March 30, 2017

Angle-Selective Photonics for Smart Subambient Radiative Cooling.

Fan Liu¹, Qichong Zhang²

¹Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, People's Republic of China.

Nano-Micro Letters

|March 10, 2025

Summary

New radiative coolers overcome daytime cooling limits by managing thermal radiation directionality. This innovation enables efficient subambient cooling for vertical and inclined surfaces, advancing smart thermal systems.

Keywords:

Angular asymmetry Radiative cooling Vertical surface

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Last Updated: May 23, 2025

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

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Published on: March 30, 2017

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

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Area of Science:

Thermal Engineering
Materials Science
Optics

Background:

Conventional daytime radiative coolers fail to account for ground-emitted thermal radiation, reducing cooling efficiency.
Upward thermal radiation from the ground interferes with and diminishes the performance of standard radiative cooling systems.

Discussion:

Radiative coolers with angular asymmetry and spectral selectivity effectively mitigate interference from ground radiation.
These advanced coolers overcome incident light angle limitations, enabling subambient daytime cooling for vertical surfaces.

Key Insights:

The design allows modulation of the thermal radiation angular range by structural adjustments.
This enables intelligent temperature regulation for various inclined surfaces in everyday applications.

Outlook:

This work significantly contributes to subambient smart thermal interaction systems.
It opens new avenues for the practical application of radiative cooling technology in diverse settings.