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Journal of Zhejiang University SCIENCE A

ISSN 1673-565X(Print), 1862-1775(Online), Monthly

2003 Vol.4 No.2 P.166-169

Digital speckle pattern interferometric measurement of diffusion coefficients in hydrogels

ZHOU Jin-fang, HAN Yan, ZHANG Xian-min, XU Jian

Department of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China; Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China

zhoujf@zju.edu.cn

Abstract: The technique of real-time digital speckle pattern interferometry is proposed to study diffusion of surfactants in hydrogel. The diffusion coefficient is simply and directly determined from the interferograms. An example of diffusion coefficient measurement of surfactant in agarose gel demonstrates the usefulness of the method. The results obtained are compared with the theoretical simulating values.

Key words: Hydrogel, Diffusion coefficient, Speckle pattern interferometry, Surfactant


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DOI:

10.1631/jzus.2003.0166

CLC number:

O436.1

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Received:

2002-01-10

Revision Accepted:

2002-06-05

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