A triple-mode mid-IR modulator for all-surface radiative heat management

Haoming Fang; Willie Padilla; Po-Chun Hsu

doi:10.1117/12.2594058

5 August 2021 A triple-mode mid-IR modulator for all-surface radiative heat management

Haoming Fang, Willie Padilla, Po-Chun Hsu

Proceedings Volume 11824, New Concepts in Solar and Thermal Radiation Conversion IV; 118240B (2021) https://doi.org/10.1117/12.2594058
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

Adaptive radiative heat management can switch between heating and cooling based on the cover material's mid-IR property. However, such modulation is dependent on the underlying object's emissivity, which limits the applicability of the modulation device. For instance, to achieve the best cooling performance, the human body requires a transmissive cover, and metallic motor vehicles require an emissive one. In this talk, I will introduce a mechanical switchable radiative heat modulator that can change among three different modes - transmission, reflection, and emission - to adapt for the underlying object property. This modulation principle can improve the design flexibility of future adaptive radiative heat management.

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Citation Download Citation

Haoming Fang, Willie Padilla, and Po-Chun Hsu "A triple-mode mid-IR modulator for all-surface radiative heat management", Proc. SPIE 11824, New Concepts in Solar and Thermal Radiation Conversion IV, 118240B (5 August 2021); https://doi.org/10.1117/12.2594058

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KEYWORDS

Mid-IR

Modulators

Switches

Reflectivity

Solar energy

Solar radiation

Solar thermal energy

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