论文标题
纳米尺度的辐射电阻：热屏障
Radiative Resistance at The Nano-scale: Thermal Barrier
论文作者
论文摘要
在本文中，在平行板系统中引入并研究了辐射热电流和辐射电阻。该系统被放置在恒温的环境中，并经历恒定的温度梯度，从而导致通过系统的辐射能通量。假设中间板的材料和厚度可能与其他平板不同，我们已经计算了系统的稳态温度谱。我们提出了用于计算线性和非线性方案中热电流和热电阻的确切公式。根据我们的结果，中间板充当热屏障，并取决于该屏障的宽度，可以实现极端的热分离。仿真结果表明，屏障的热电阻是近场分离距离的厚度的增加功能，但实际上对远场状态的屏障宽度不敏感。还讨论了辐射传热的远距离特征，该特征还讨论了具有相同平板的系统中。
In present article the radiative thermal current and radiative resistance are introduced and investigated in a system of parallel slabs. The system is placed in an environment with a constant temperature and subjected to a constant temperature gradient, which causes a radiative energy flux through the system. We have calculated the steady-state temperatures profile of the system, assuming that the material and thickness of the middle slab could be different from the other slabs. We propose the exact formulation for calculating the thermal current and thermal resistances in both linear and nonlinear regimes. According to our results, the middle slab acts as a thermal barrier and depending on the width of this barrier, an extreme thermal isolation is achievable. Simulation results indicate that the thermal resistance of the barrier is an increasing function of the thickness for near-field separation distances but it is virtually insensitive to the barrier width in far field regime. The long range character of the radiative heat transfer, which occurs in system with identical slabs is also discussed.
