Experimental investigation of the subdiffusion in a membrane system

被引：19

作者：

Dworecki, K ^{[1
]}

机构：

[1] Jan Kochanowski Univ Humanities & Sci, Inst Phys, PL-25406 Kielce, Poland

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2006年 / 359卷 / 1-4期

关键词：

subdiffusion process; agarose gel solution; near-membrane layer; temporal scaling; concentration profiles; interferometric technique;

D O I：

10.1016/j.physa.2005.04.031

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present experimental results on the anomalous diffusion in a membrane system which are obtained by means of the laser interferometric technique. When the polyethylene glycol 2000 (PEG2000) diffuses across the membrane into the agarose gel solution, the thickness of the so-called near-membrane layer 6, which is defined as a distance where the substance concentration drops k times, evolves with time t as t(gamma) with gamma<0.5, manifesting a subdiffusive character of the process. The concentration profiles C(x, t) scale as t(beta)(x/t(gamma)), where the exponents beta and gamma are fixed. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：24 / 32

页数：9

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