Zhang Jihong, Hu Yang, Han Qing, Liu Haotuo, Sun Yasong, Wu Xiaohu
School of Electromechanical and Automotive Engineering, Yantai University, Yantai 264005, Shandong, P. R. China.
Basic Research Center, School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, P. R. China.
Phys Chem Chem Phys. 2022 Sep 21;24(36):22102-22108. doi: 10.1039/d2cp03303h.
Recently, the increasing research on the anisotropic optical axis (OA) has provided a novel way to control light. However, this method is rarely applied to modulate the near-field radiative heat transfer (NFRHT). In this work, we investigate the influences of the OA orientation of calcite on the NFRHT between two calcite parallel structures. The numerical results demonstrate that the near-field radiative heat flux is larger when the OA is along the -axis than that when the OA is along the -axis. This is because when the OA is along the -axis, the excited hyperbolic polaritons exhibit a full range of angles in the type I hyperbolic band. In contrast, the excited hyperbolic polaritons exhibit a finite angle when the OA is along the -axis. Moreover, it is further investigated that the thickness has a significant impact on the NFRHT between calcite slabs. Our findings may highlight the promising role of calcite in manipulating NFRHT.
最近，对各向异性光轴（OA）的研究不断增加，为控制光提供了一种新方法。然而，这种方法很少应用于调制近场辐射热传递（NFRHT）。在这项工作中，我们研究了方解石的光轴取向对两个方解石平行结构之间近场辐射热传递的影响。数值结果表明，当光轴沿 - 轴时，近场辐射热通量比光轴沿 - 轴时更大。这是因为当光轴沿 - 轴时，激发的双曲极化激元在I型双曲带中呈现全方位的角度。相比之下，当光轴沿 - 轴时，激发的双曲极化激元呈现有限角度。此外，还进一步研究了厚度对方解石板之间近场辐射热传递有显著影响。我们的发现可能突出了方解石在操纵近场辐射热传递方面的潜在作用。
