各向异性纳米纤维复合材料中的隧道电导率：一个基于双折射的模型
Tunneling conductivity in anisotropic nanofibre composites: a percolation-based model
摘要：
关键路径近似（“CPA”）与基于晶格的逾渗方法相结合，以提供基于纳米纤维的复合材料中的导电性模型。我们的治疗结合了最近的估计隧道电导的各向异性作为细长纳米粒子的轴之间的相对角度的函数。电导率作为一个功能的体积分数，聚类程度，和取向序参量的平均值和标准偏差的检查。从我们的计算结果表明，电导率可以强烈依赖于取向序参量的标准偏差，即使当所有其他变量（包括平均值的序参量<S>）保持不变。
英文摘要：
The Critical Path Approximation ("CPA") is integrated with a lattice-based approach to percolation to provide a model for conductivity in nanofibre-based composites. Our treatment incorporates a recent estimate for the anisotropy in tunnelingbased conductance as a function of the relative angle between the axes of elongated nanoparticles. The conductivity is examined as a function of the volume fraction, degree of clustering, and of the mean value and standard deviation of the orientational order parameter. Results from our calculations suggest that the conductivity can depend strongly upon the standard deviation in the orientational order parameter even when all the other variables (including the mean value of the order parameter <S>) are held invariant.
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