By accessing high shear and extensional strain rates with our microfluidic devices and measuring the flow-induced retardance of our conjugated polymer systems we were able to quantitatively characterize the dependence of flow-induced alignment on the flow type as well as the solution state properties. We have shown that there are several key factors to consider regarding flow-induced alignment arising from the combined effect of flow, solution aggregation, and concentration. First, we have shown that extensional flow is significantly more effective at aligning our conjugated polymer aggregates compared to shear flow. While the concept of shearing is commonly used in solution processing, so much so that blade coating is often referred to as "solution shearing", the incorporation of extensional flow in the deposition process is a promising method towards leveraging fluid flow to efficiently align conjugated polymers and aggregates. Second, we have shown that solution aggregation is an important factor for achieving flow-induced alignment. Individual, shorter polymer chains require extremely strong flows to align the presence of aggregates makes it more feasible. Furthermore, the precise nature of the aggregation is of great consequence as forming larger, more rigid aggregates can make alignment significantly easier to achieve. However, the internal structure achieved by aggregation may potentially limit the degree of orientational order the material is able to achieve at high strain rates. Finally, we have shown that concentration regimes, or more specifically the emergence of inter-aggregate interactions, is an important consideration when designing flow.