论文标题
通过TIO $ _2 $/PDMS涂层实现被动的白天辐射冷却
Achieving passive daytime radiative cooling via TiO$_2$/PDMS coating
论文作者
论文摘要
人口的指数增长以及全球温度的增加降低了冷却和制冷的爆炸性需求。这些冷却装置的碳足迹产生的恶性循环可能会通过被动冷却的机制破坏。这项研究概述了旨在设计此类材料的研究 - 在太阳光谱中表现出很高的反射率，并且在8-13 $μ$ m的大气透明窗口中的高排放率很高。 Monte Carlo（MC）方法用于模拟具有这些特定的热光特性的水材料设计的复合材料中的光传播。在大气透明度窗口中，制造了Tio $ _2 $/PDMS涂层，以获得> 91 \％的太阳反射率和> 75 \％的发射率。这意味着在印度孟买的峰值太阳辐射下，将涂层的身体以4-9 $^\ Circ $ C的速度冷却。补充了这种涂层潜在多功能性的便捷制造工艺表明，有望在商业规模上获得被动的白天辐射冷却。
The exponential growth in population and the increasing global temperature trickles down to an explosive demand in cooling and refrigeration. The vicious cycle of carbon footprint generation by these cooling devices can be broken by a mechanism of passive cooling. This study outlines research undertaken with the aim to design such materials - exhibiting high reflectance in the solar spectrum and high emission in the atmospheric transparency window of 8-13 $μ$m. The Monte Carlo (MC) method is used to simulate light propagation in a composite material aiding the design of metamaterials with these specific thermo-optical properties. A TiO$_2$/PDMS coating is fabricated to obtain > 91 \% solar reflectivity and > 75 \% emissivity in the atmospheric transparency window. This translates to cooling the coated body by 4-9 $^\circ$C below the ambient under peak solar irradiation in Mumbai, India. The facile fabrication process supplemented with the potential versatility of this coating shows promise to attain passive daytime radiative cooling on a commercial scale.
