title: Digital speckle pattern interferometric measurement of diffusion coefficients in hydrogels.
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 ofthe method. The results obtained are compared with the theoretical simulating values.
authors.affiliation: Department of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China. zhoujf@zju.edu.cn
authors.forename: Jin-Fang
authors.initials: JF
authors.lastname: Zhou
authors.forename: Yan
authors.initials: Y
authors.lastname: Han
authors.forename: Xian-Min
authors.initials: XM
authors.lastname: Zhang
authors.forename: Jian
authors.initials: J
authors.lastname: Xu
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D004058:Diffusion; D006696:Holography / Q000295:instrumentation / Q000379:methods*; D020100:Hydrogels / Q000737:chemistry*; D007368:Interferometry / Q000295:instrumentation / Q000379:methods*; D008956:Models, Chemical; D011786:Quality Control; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012685:Sepharose / Q000737:chemistry*; D013501:Surface-Active Agents / Q000737:chemistry*
chemical_list: D020100:Hydrogels; D013501:Surface-Active Agents; D012685:Sepharose