论文标题
诺丁汉效应在极端近场状态下的传热中的作用
Role of Nottingham effect in the heat transfer in extreme near-field regime
论文作者
论文摘要
我们分析了在极端近场政权中被真空间隙分离的两种金属之间的传热。在传导和辐射之间的跨控制方案中，热交换器是由光子，声子和电子隧道介导的。我们量化了这些载体相对于两个物体之间的分离距离和所施加的偏置电压的相对贡献。在存在弱偏置（$ v _ {\ rm b} <100 $ 〜mV）的情况下，电子和声子可以在接触近接触附近的热传递中同样贡献，而光子的贡献则可以忽略不计。另一方面，对于较大的偏置电压，电子起主要作用。此外，我们证明，根据这种偏见的大小，电子可以通过诺丁汉效应冷却或加热热体。我们的结果强调了有关极端近场政权热交的最新实验结果中的一些不一致之处，并为将来的实验设定了路线图。
We analyze the heat transfer between two metals separated by a vacuum gap in the extreme near-field regime. In this cross-over regime between conduction and radiation, heat exchanges are mediated by photon, phonon and electron tunneling. We quantify the relative contribution of these carriers with respect to both the separation distance between the two bodies and the applied bias voltage. In the presence of a weak bias ($V_{\rm b}<100$~mV), electrons and phonons can contribute equally to the heat transfer near contact, while the contribution of photons becomes negligible. On the other hand, for larger bias voltages, electrons play a dominant role. Moreover, we demonstrate that depending on the magnitude of this bias, electrons can either cool down or heat up the hot body by the Nottingham effect. Our results emphasize some inconsistencies in recent experimental results about heat exchanges in the extreme near-field regime and set a road map for future experiments.
