Imaging and Microfluidics

Transmission mode FT-IR imaging of microfluidic devices remains attractive because it is important to be able to spectroscopically access the full flow of the system. Certain flow regimes, droplets in oil for instance, can produce results that are obscured by the ATR approach as the depth of penetration may not reach the aqueous droplet and could instead image only the carrier fluid, providing insufficient information about the desired system. 

and HDO, respectively. (Chan et al. [44] - Reproduced by permission of The Royal Society of Chemistry.) 

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