Latella Ivan, Messina Riccardo, Biehs Svend-Age, Rubi J Miguel, Ben-Abdallah Philippe
Departament de Física de la Matèria Condensada, Universitat de Barcelona, Martí i Franquès 1, 08028, Barcelona, Spain.
Laboratoire Charles Fabry, UMR 8501, Institut d'Optique, CNRS, Université Paris-Saclay, 2 Avenue Augustin Fresnel, 91127, Palaiseau Cedex, France.
Sci Rep. 2020 Jun 2;10(1):8938. doi: 10.1038/s41598-020-65555-3.
Radiative heat transfer between two bodies saturates at very short separation distances due to the nonlocal optical response of the materials. In this work, we show that the presence of radiative interactions with a third body or external bath can also induce a saturation of the heat transfer, even at separation distances for which the optical response of the materials is purely local. We demonstrate that this saturation mechanism is a direct consequence of a thermalization process resulting from many-body interactions in the system. This effect could have an important impact in the field of nanoscale thermal management of complex systems and in the interpretation of measured signals in thermal metrology at the nanoscale.
由于材料的非局域光学响应，两个物体之间的辐射热传递在非常短的分离距离处会达到饱和。在这项工作中，我们表明，即使在材料的光学响应是纯局域的分离距离下，与第三体或外部热库的辐射相互作用的存在也会导致热传递饱和。我们证明，这种饱和机制是系统中多体相互作用导致的热化过程的直接结果。这种效应可能会对复杂系统的纳米级热管理领域以及纳米级热计量中测量信号的解释产生重要影响。
