用散射法研究两种介电纳米光栅间的辐射换热
Radiative heat transfer between two dielectric nanogratings in the scattering approach
摘要：
我们提出了一个理论研究的电介质纳米光栅之间的辐射传热的散射方法。作为与这些精确结果的比较，我们还评估了Derjaguin的邻近近似（PA）的有效域。我们考虑一个系统的两个波纹二氧化硅板与各种光栅的几何形状，分离距离，和横向位移的板相对于彼此。数值计算表明，虽然PA是一个很好的近似对准光栅，它不能使用时，光栅横向位移。我们说明了这一点，基于这样的位移的纳米系统的热调制器设备。
英文摘要：
We present a theoretical study of radiative heat transfer between dielectric nanogratings in the scattering approach. As a comparision with these exact results, we also evaluate the domain of validity of Derjaguin's Proximity Approximation (PA). We consider a system of two corrugated silica plates with various grating geometries, separation distances, and lateral displacement of the plates with respect to one another. Numerical computations show that while the PA is a good approximation for aligned gratings, it cannot be used when the gratings are laterally displaced. We illustrate this by a thermal modulator device for nanosystems based on such a displacement.
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