Measurement of Diffusion in Flowing Complex Fluids.
Measurement of Diffusion in Flowing Complex Fluids.
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DOI：
10.1016/j.colsurfa.2006.02.061
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发表时间：
2006-07
期刊：
影响因子：
--
通讯作者：
E. Leonard;Christian P. Aucoin;E. Nanne
中科院分区：
文献类型：
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作者：
E. Leonard;Christian P. Aucoin;E. Nanne
介绍了一种用于测量复杂流动流体中溶质扩散以及颗粒扩散和迁移的微流控装置。该装置特别适合于获得此类流体中的扩散系数，这需要在测量期间保持所需的流动状态。提出了一种基于洛施密特扩散理论和短暴露时间的方法，可以从流出细胞的流中的浓度差计算扩散系数。
A microfluidic device for the measurement of solute diffusion as well as particle diffusion and migration in flowing complex fluids is described. The device is particularly suited to obtaining diffusivities in such fluids, which require a desired flow state to be maintained during measurement. A method based on the Loschmidt diffusion theory and short times of exposure is presented to allow calculation of diffusivities from concentration differences in the flow streams leaving the cell.