In situ Raman imaging of interdiffusion in a microchannel
- 25 February 2005
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 86 (9) , 094106
- https://doi.org/10.1063/1.1873050
Abstract
This letter presents an experimental setup to probe the interdiffusion of various miscible and nonreacting liquids. A Raman confocal microscope allows us to image the local concentrations of two coflowing liquids in a microchannel. These steady-state measurements provide precise quantitative information about the kinetics of the interdiffusion process. For all the pairs of fluids investigated, we found this process to follow a classical diffusive scaling law with a interdiffusion coefficient that depends on both liquids.
Keywords
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