Advancing All‐Day Passive Radiative Cooling Performance of 3D Anodized Aluminum Oxide Nanostructures on Aluminium DOI Creative Commons
Alba Díaz‐Lobo, Marisol Martín‐González, Cristina V. Manzano

и другие.

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 23, 2025

Abstract Passive radiative cooling, which uses the cold sink of outer space for sub‐ambient offers a sustainable alternative to energy‐intensive conventional cooling methods. This study investigates impact transversal channel distances within three dimensional‐ 3D‐ anodic aluminum oxide (AAO) dielectric and inorganic nanostructures on their morphology, emissivity, passive performance. 3D‐AAO with varying alumina thicknesses transverse spacings are fabricated. metamaterials Aluminium ‐ Al‐ bulk larger exhibit high solar reflectance mid‐IR since they act as Bragg reflectors. Their porosity is significantly higher than more common 1D‐AAO due periodically ordered channels. Cooling power density calculations showed that greater improve daytime Outdoor characterization under direct sunlight confirmed these findings, nanostructure Al achieving maximum temperature reduction 10.2 °C. research establishes critical role nanochannels in tailoring properties durable, inorganic, all‐dielectric highlights potential multiple applications, including energy‐efficient building cooling.

Язык: Английский

Advancing All‐Day Passive Radiative Cooling Performance of 3D Anodized Aluminum Oxide Nanostructures on Aluminium DOI Creative Commons
Alba Díaz‐Lobo, Marisol Martín‐González, Cristina V. Manzano

и другие.

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 23, 2025

Abstract Passive radiative cooling, which uses the cold sink of outer space for sub‐ambient offers a sustainable alternative to energy‐intensive conventional cooling methods. This study investigates impact transversal channel distances within three dimensional‐ 3D‐ anodic aluminum oxide (AAO) dielectric and inorganic nanostructures on their morphology, emissivity, passive performance. 3D‐AAO with varying alumina thicknesses transverse spacings are fabricated. metamaterials Aluminium ‐ Al‐ bulk larger exhibit high solar reflectance mid‐IR since they act as Bragg reflectors. Their porosity is significantly higher than more common 1D‐AAO due periodically ordered channels. Cooling power density calculations showed that greater improve daytime Outdoor characterization under direct sunlight confirmed these findings, nanostructure Al achieving maximum temperature reduction 10.2 °C. research establishes critical role nanochannels in tailoring properties durable, inorganic, all‐dielectric highlights potential multiple applications, including energy‐efficient building cooling.

Язык: Английский

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