Heat superdiffusion in plasmonic nanostructure networks.
Heat superdiffusion in plasmonic nanostructure networks.
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DOI：
10.1103/physrevlett.111.174301
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发表时间：
2013-06
影响因子：
8.6
通讯作者：
P. Ben-Abdallah;R. Messina;Svend‐Age Biehs;M. Tschikin;K. Joulain;C. Henkel
中科院分区：
文献类型：
--
作者：
P. Ben-Abdallah;R. Messina;Svend‐Age Biehs;M. Tschikin;K. Joulain;C. Henkel
等离子体纳米结构网络中由近场相互作用引起的热输运类似于广义的随机行走过程。通过分析相应的概率分布函数的渐近行为，证明了在线性有序链和三维随机网络中都存在超扩散区。我们证明了热在这些网络中的传播可以用一种L飞行来描述。等离子体网络中这种反常的热传输机制的存在为设计能够比固体中正常扩散过程更快地传输热的新一代复合材料开辟了道路。
The heat transport mediated by near-field interactions in networks of plasmonic nanostructures is shown to be analogous to a generalized random walk process. The existence of superdiffusive regimes is demonstrated both in linear ordered chains and in three-dimensional random networks by analyzing the asymptotic behavior of the corresponding probability distribution function. We show that the spread of heat in these networks is described by a type of Lévy flight. The presence of such anomalous heat-transport regimes in plasmonic networks opens the way to the design of a new generation of composite materials able to transport heat faster than the normal diffusion process in solids.