渗流阈值
渗流理论
材料科学
渗透(认知心理学)
碳纳米管
各向异性
分散性
定向渗流
热传导
粒子(生态学)
统计物理学
粒径
社会联系
渗流临界指数
连续介质渗流理论
凝聚态物理
电导率
纳米技术
电阻率和电导率
复合材料
物理
量子力学
化学工程
高分子化学
心理学
海洋学
神经科学
地质学
工程类
心理治疗师
生物
作者
Rhj Ronald Otten,Ppam Paul van der Schoot
标识
DOI:10.1103/physrevlett.103.225704
摘要
We show that a generalized connectedness percolation theory can be made tractable for a large class of anisotropic particle mixtures that potentially contain an infinite number of components. By applying our methodology to carbon-nanotube composites, we explain the huge variations found in the onset of electrical conduction in terms of a percolation threshold that turns out to be sensitive to polydispersity in particle length and diameter. The theory also allows us to model the influence of the presence of nonconductive species in the mixture, such as is the case for single-walled nanotubes, showing that these raise the percolation threshold proportionally to their abundance.
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