Radiative cooling is a new method to passively cool object without consuming any energy. Recent study on radiative cooling has gained a lot of progress. However, the cooling ability of radiative cooler is limited due to non-radiative heat loss. In this study, we proposed a novel multi-layer cooler structure to improve the radiative cooling performance and experimentally demonstrated a 16% improvement compared to the usually used single-layer cooler. This work indicates the potential application for multi-layer structure and suggests a new idea for improving the radiative cooling ability.

中文翻译：

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采用多层结构改善辐射散热性能

辐射冷却是一种被动冷却对象而不消耗任何能量的新方法。辐射冷却的最新研究取得了很大进展。然而，由于非辐射热损失，辐射冷却器的冷却能力受到限制。在这项研究中，我们提出了一种新颖的多层冷却器结构，以改善辐射冷却性能，并通过实验证明与通常使用的单层冷却器相比提高了16％。这项工作表明了多层结构的潜在应用，并提出了提高辐射冷却能力的新思路。