FIG. 1.

(a) Schematic of the experimental setup for the microfluidic devices for ATR-FTIR spectroscopic imaging measurements using a ZnSe ATR-crystal. The PDMS devices were attached to the measuring surface of the ATR-crystal and held in place using a Perspex flow cell top-plate. (b) PDMS microfluidic device with four channels. (c) The acrylic mould that was used to create the PDMS device capable of measuring two different flowing solutions simultaneously. (d) PDMS microfluidic channel with a T-Junction followed by serpentine channel.