Triple-Scale Structure-Induced Efficient Passive Radiative Cooling Combining Robust Anticondensation DOI

Zehong Zhao,

Chun’an Tang, Enming Cui

и другие.

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Май 15, 2025

Passive radiative cooling holds promise for achieving subambient without consuming energy, facilitated by emitting thermal radiation into cosmic space. However, previous approaches, focusing heavily on aligning structural scales with optical properties, have struggled effective anticondensation, thus limiting their applicability in high-humidity or supercooled conditions. Here, we demonstrate a design that enables efficient passive while maintaining robust anticondensation performance, underpinned triple-scale structure comprising microscale polymer particles, submicrometer-scale interparticle gaps, and nanoscale pores the particle surfaces. This achieves an sunlight reflectance of 0.98 high mid-infrared emissivity 0.91 driven structure-enhanced Mie scattering chemical bond vibrations materials, respectively, enabling 10.9 °C under direct at ∼40% relative humidity. Notably, even humidity ∼70%, our still manifests average ∼4 compared to ambient temperature, quite exceeding traditional materials. is attributed performance characterized maximum droplet shedding radius ∼47.6 μm condensation coverage ∼32.4%, structure-induced larger Laplace pressure force smaller adhesion. Moreover, demonstrates durability, encompassing self-cleaning via condensing droplets, stability below 500 °C, antiultraviolet above 100 h, which exhibits potential applications management various extreme scenarios.

Язык: Английский

Colored Radiative Cooling: from Photonic Approaches to Fluorescent Colors and Beyond DOI Creative Commons
Tao Wang, Ying Liu, You Dong

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 4, 2025

Radiative cooling technology is gaining prominence as a sustainable solution for improving thermal comfort and reducing energy consumption associated with demands. To meet diverse functional requirements such aesthetics, switchable cooling, camouflage, colored smart windows, color often preferred over white opaque appearance in the design of radiative materials. Colored (CRC) has emerged prevailing not only achieving colorful but also increasing effective solar reflectance to enhance performance (through incorporation fluorescent materials). This paper reviews recent advancements CRC its profound impact on savings real-world applications. After introducing fundamentals characterization, various photonic approaches are explored that leverage resonant structures achieve coloration comparing them conventional methods based optical materials like pigments can convert absorbed ultraviolet light into visible-light emission. Furthermore, review delves self-adaptive featuring dynamic modulation responds temperature fluctuations. Lastly, potential application assessed, comprehensive outlook their future development offered, critical challenges practical applications discussed.

Язык: Английский

Процитировано

2
Mimicking scarab beetle elytra in colorful radiative coolers DOI
Cun–Hai Wang, Wenhui Wang, Hao Chen

и другие.

Matter, Год журнала: 2025, Номер 8(2), С. 101951 - 101951

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Passive Radiative Cooling Materials with Special Focus on the Reduction of Urban Heat Island Effect: A Current Summarized Classification of Need, Approaches and Characterization Methods DOI
J. Manara, Jürgen Hartmann, Fabian Kerwagen

и другие.

International Journal of Thermophysics, Год журнала: 2025, Номер 46(4)

Опубликована: Март 3, 2025

Язык: Английский

Процитировано

0
On the development of super cool paints for cooling purposes DOI Creative Commons
Jiashuo Wang, Da Yan, Lan Ding

и другие.

Solar Energy, Год журнала: 2025, Номер 296, С. 113592 - 113592

Опубликована: Май 14, 2025

Язык: Английский

Процитировано

0
Triple-Scale Structure-Induced Efficient Passive Radiative Cooling Combining Robust Anticondensation DOI

Zehong Zhao,

Chun’an Tang, Enming Cui

и другие.

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Май 15, 2025

Passive radiative cooling holds promise for achieving subambient without consuming energy, facilitated by emitting thermal radiation into cosmic space. However, previous approaches, focusing heavily on aligning structural scales with optical properties, have struggled effective anticondensation, thus limiting their applicability in high-humidity or supercooled conditions. Here, we demonstrate a design that enables efficient passive while maintaining robust anticondensation performance, underpinned triple-scale structure comprising microscale polymer particles, submicrometer-scale interparticle gaps, and nanoscale pores the particle surfaces. This achieves an sunlight reflectance of 0.98 high mid-infrared emissivity 0.91 driven structure-enhanced Mie scattering chemical bond vibrations materials, respectively, enabling 10.9 °C under direct at ∼40% relative humidity. Notably, even humidity ∼70%, our still manifests average ∼4 compared to ambient temperature, quite exceeding traditional materials. is attributed performance characterized maximum droplet shedding radius ∼47.6 μm condensation coverage ∼32.4%, structure-induced larger Laplace pressure force smaller adhesion. Moreover, demonstrates durability, encompassing self-cleaning via condensing droplets, stability below 500 °C, antiultraviolet above 100 h, which exhibits potential applications management various extreme scenarios.

Язык: Английский

Процитировано

0