Abstract The diffusive nature of heat flow lays a formidable obstacle for directional heat manipulation, not akin to the wave-governed electromagnetics that can be well controlled in intensity and direction. By modulating the near-field radiative heat transfer among graphene/SiC core-shell (GSCS) nanoparticles, we propose the concept of thermal routing to address the directional heat manipulation in a particular many-body setup. The graphene shell introduces a minor polarizability peak and remarkably modifies the localized surface resonance of the particle, which plays a significant role in the radiative heat transfer within the many-body system consisting of GSCS nanoparticles. Consequently, Fermi levels of graphene shells matching allows directional radiative heat flow, thus enabling thermal routing manifested by variant designated temperature distributions. The proposed thermal routing could be used to dynamically tune heat flow in integrated nano-objects for thermal manipulation, and also opens avenues for exploiting novel thermal functionalities via radiative heat transfer at the nanoscale.

中文翻译：

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通过近场辐射传热进行热路由

摘要 热流的扩散性质为定向热操纵设置了一个巨大的障碍，这与可以很好地控制强度和方向的波控电磁学不同。通过调节石墨烯/碳化硅核壳 (GSCS) 纳米颗粒之间的近场辐射传热，我们提出了热路由的概念，以解决特定多体设置中的定向热操纵问题。石墨烯壳引入了一个较小的极化峰并显着改变了粒子的局部表面共振，这在由 GSCS 纳米粒子组成的多体系统内的辐射传热中起着重要作用。因此，石墨烯壳匹配的费米能级允许定向辐射热流，从而实现由不同的指定温度分布表现出来的热路由。所提出的热路由可用于动态调整集成纳米物体中的热流以进行热操纵，并且还为通过纳米尺度的辐射热传递开发新的热功能开辟了途径。