This proposal aims at studying systematically, for the first time with SANS, the influence of model flow fields on complex fluid microstructures with relevance to industrial applications, specifically to consumer goods and personal care industries. We selected three model surfactant/co-surfactant/water mixtures, with well-known equilibrium phase behaviour, for this study, namely: sodium dodecyl sulfate (SDS)/octanol/brine), cetyltrimethyl ammonium chloride (C16TAC)/pentanol/water and a model microemulsion system (C10E4 /decane/ D20). We have recently demonstrated the feasibility of microfluidic SANS experiments on D22 (September 2012): we have developed novel microdevices with suitably low SANS background and successfully obtained results from 50 micron channels using 0.5 mm neutron beam diameter, in 10s 100s second acquisition times. The coupling of microfluidics and SANS provides insight into flow processing with direct relevance to continuous processing of industrial flow reactors.