涉及粘弹性响应下反常扩散的单粒子和团簇的热动力学方法。

Thermokinetic approach of single particles and clusters involving anomalous diffusion under viscoelastic response.

作者信息

Santamaría-Holek I, Rubí J M, Gadomski A

机构信息

Facultad de Ciencias, Universidad Nacional Autónoma de México, Circuito exterior de Ciudad Universitaria, 04510, México D. F., México.

出版信息

J Phys Chem B. 2007 Mar 8;111(9):2293-8. doi: 10.1021/jp0675375. Epub 2007 Feb 10.

DOI:10.1021/jp0675375

PMID:17291031

Abstract

We present a thermokinetic description of anomalous diffusion of single particles and clusters in a viscoelastic medium in terms of a non-Markovian diffusion equation involving memory functions. The scaling behavior of these functions is analyzed by considering hydrodynamics and cluster-size space random walk arguments. We explain experimental results on diffusion of Brownian particles in the cytoskeleton, in cluster-cluster aggregation, and in a suspension of micelles.

摘要

我们根据一个涉及记忆函数的非马尔可夫扩散方程，给出了粘弹性介质中单个粒子和团簇反常扩散的热动力学描述。通过考虑流体动力学和团簇尺寸空间随机游走的观点，分析了这些函数的标度行为。我们解释了关于布朗粒子在细胞骨架中扩散、团簇-团簇聚集以及在胶束悬浮液中扩散的实验结果。