Sanders Stephen, Zundel Lauren, Kort-Kamp Wilton J M, Dalvit Diego A R, Manjavacas Alejandro
Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87106, USA.
Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
Phys Rev Lett. 2021 May 14;126(19):193601. doi: 10.1103/PhysRevLett.126.193601.
The near-field electromagnetic interaction between nanoscale objects produces enhanced radiative heat transfer that can greatly surpass the limits established by far-field blackbody radiation. Here, we present a theoretical framework to describe the temporal dynamics of the radiative heat transfer in ensembles of nanostructures, which is based on the use of an eigenmode expansion of the equations that govern this process. Using this formalism, we identify the fundamental principles that determine the thermalization of collections of nanostructures, revealing general but often unintuitive dynamics. Our results provide an elegant and precise approach to efficiently analyze the temporal dynamics of the near-field radiative heat transfer in systems containing a large number of nanoparticles.
纳米尺度物体之间的近场电磁相互作用会产生增强的辐射热传递，这种热传递能大大超越远场黑体辐射所设定的限制。在此，我们提出一个理论框架来描述纳米结构集合中辐射热传递的时间动态，该框架基于对支配此过程的方程进行本征模展开。利用这种形式体系，我们确定了决定纳米结构集合热化的基本原理，揭示了普遍但往往不直观的动态特性。我们的结果提供了一种简洁而精确的方法，可有效分析包含大量纳米粒子的系统中近场辐射热传递的时间动态。
