论文标题
机械变形引起的辐射冷却连续变化发射
Mechanical Deformation Induced Continuously Variable Emission for Radiative Cooling
论文作者
论文摘要
被动辐射冷却通过大气透明窗口（8 um -13 um）将物体的热能绘制到冷的外层空间，对于减少建筑物的能源消耗很重要。过去，白天和夜间辐射冷却过去已经进行了广泛的研究。但是，根据人类的需求，辐射冷却可以连续调节其冷却温度，例如阀门。在这项研究中，我们提出了一个可对自适应辐射冷却冷却的可重构光子结构的概念，它通过不断改变大气窗口区域的发射光谱。当经过机械应变时，一维PDM光栅和纳米颗粒嵌入PDMS薄膜的变形可以实现这一点。所提出的结构在某些菌株下达到不同的停滞温度。两种不同菌株之间的动态交换导致光子结构在设定温度周围的温度波动。
Passive radiative cooling drawing the heat energy of objects to the cold outer space through the atmospheric transparent window (8 um - 13 um) is significant for reducing the energy consumption of buildings. Daytime and nighttime radiative cooling have been extensively investigated in the past. However, radiative cooling which can continuously regulate its cooling temperature, like a valve, according to human need is rarely reported. In this study, we present a concept of reconfigurable photonic structure for the adaptive radiative cooling by continuously varying the emission spectra in the atmospheric window region. This is realized by the deformation of the one-dimensional PDMS grating and the nanoparticles embedded PDMS thin film when subjected to mechanical strain. The proposed structure reaches different stagnation temperatures under certain strains. A dynamic exchange between two different strains results in the fluctuation of the photonic structure's temperature around a set temperature.
