TITLE

In situ Raman imaging of interdiffusion in a microchannel

AUTHOR(S)
Salmon, Jean-Baptiste; Ajdari, Armand; Tabeling, Patrick; Servant, Laurent; Talaga, David; Joanicot, Mathieu
PUB. DATE
February 2005
SOURCE
Applied Physics Letters;2/28/2005, Vol. 86 Issue 9, p094106
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
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 D that depends on both liquids.
ACCESSION #
16581390

 

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