论文标题
近场辐射热整流的动态调整
Dynamic Tuning of Near-field Radiative Thermal Rectification
论文作者
论文摘要
利用相变和可重新配置的超材料，可以通过近场辐射热整流装置来实现纳米级热调节的动态控制。在这项工作中，探索了使用可重新配置的相变质材料进行的充电近场热整流器。整流器的两个端子被真空隔开，在可控的操作温度下工作，围绕相转换材料的临界温度vo2。其中一个终端是由PDMS薄膜制成的可拉伸结构和由各种类型的相变材料组成的光栅。对各种包含形式和所有相关几何参数的影响进行了很好的分析。可以在两个变形方案中分别获得可控的纳米级热调制，并且可以分别获得有史以来预测的最高值的超高矫正比为23.7和19.8。它将阐明小尺度热传输和光操纵的动态调整。
Taking advantage of phase-transition and reconfigurable metamaterials, dynamic control of nanoscale thermal modulation can be achieved through the near-field radiative thermal rectification devices. In this work, an active-tuning near-field thermal rectifier using reconfigurable phase-transition metamaterials is explored. The rectifier has two terminals separated by vacuum, working under a controllable operational temperature around the critical temperature of the phase-transition material VO2. One of the terminals is a stretchable structure made of PDMS thin film and grating consisting of various types of phase-transition material. The effects of various inclusion forms and all the related geometric parameters are well analyzed. The controllable nanoscale thermal modulation can be achieved and the ultrahigh rectification ratios of 23.7 and 19.8, the highest values ever predicted, can be obtained for two deformation scenarios, respectively. It will shed light on the dynamic tuning of small-scale thermal transport and light manipulation.
