标题： 通过微米间隙的巨大辐射传热 显示英文标题

标题： Giant radiation heat transfer through the micron gaps

摘要： 近场辐射介质之间紧密间隔的热传递可以比单个黑体界面的辐射高几个数量级。 这种效应是由指数衰减（倏逝）波引起的，这些波在两个透明边界之间形成光子隧穿。 然而，在中红外范围内，当两种介质之间的间隙小至几十纳米时，这种效应仍然成立。 我们提出了一种新的辐射热传递范式，使得微米厚的间隙中可以实现强光子隧穿。 为此，两种介质之间的空气隙应被修改，以便倏逝波在其内部转化为传播波。 这种修改可以通过使用超材料来实现，这样通过超材料的直接热导几乎不存在，而转移热量的光伏转换也不会因超材料而改变。 显示英文摘要

摘要： Near-field heat transfer between two closely spaced radiating media can exceed in orders radiation through the interface of a single black body. This effect is caused by exponentially decaying (evanescent) waves which form the photon tunnel between two transparent boundaries. However, in the mid-infrared range it holds when the gap between two media is as small as few tens of nanometers. We propose a new paradigm of the radiation heat transfer which makes possible the strong photon tunneling for micron thick gaps. For it the air gap between two media should be modified, so that evanescent waves are transformed inside it into propagating ones. This modification is achievable using a metamaterial so that the direct thermal conductance through the metamaterial is practically absent and the photovoltaic conversion of the transferred heat is not altered by the metamaterial.