What question did this study set out to answer?

The aim is to develop a material that can switch between cooling and heating efficiently while maintaining aesthetic value.

May 22, 2026NanomaterialsOpen Access

Structurally Colored Photonic Janus Films for Switchable Radiative Cooling and Solar Heating

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Authors

WWWei WeiDonghua University HGHengrui GuDonghua University XZXingchen ZhaoQingdao University

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Implication

This randomized trial demonstrates switchable radiative cooling and solar heating in a novel Janus film, suggesting potential for adaptable thermal management.

Key Points

The aim is to develop a material that can switch between cooling and heating efficiently while maintaining aesthetic value.
Developed a Janus film combining cellulose nanocrystals and carbon nanotubes.
Measured thermal properties including mid-infrared emissivity and solar absorptivity.
Tested reversibility and efficiency of thermal regulation through film flipping.
Achieved up to 0.91 mid-infrared emissivity for cooling and approximately 92% solar absorptivity for heating.
Demonstrated effective photothermal conversion enhanced by low-voltage Joule heating.
Validated the ability to switch thermal modes by simply flipping the film, showcasing its adaptability.

Cite This Study

Wei et al. (2026) studied this question.

synapsesocial.com/papers/6a0ff412d674f7c03778d186 https://doi.org/10.3390/nano16100603

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Implication

This randomized trial demonstrates switchable radiative cooling and solar heating in a novel Janus film, suggesting potential for adaptable thermal management.

Structurally Colored Photonic Janus Films for Switchable Radiative Cooling and Solar Heating

Discussion

Member takes

Implication

Key Points

Cite This Study

Structurally Colored Photonic Janus Films for Switchable Radiative Cooling and Solar Heating

Discussion

Member takes

Implication

Key Points

Cite This Study

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