Despite the fact that fluid flow is ubiquitous to all solution processing methods, the effect of flow gradients on controlling the alignment and assembly of conjugated polymers is not well understood. Much of the work regarding the flow effect on conjugated polymers has been phenomenological, such as correlating the effect of printing speed or the use of a novel printing head 2, with ex situ characterizations of film morphology. These works have alluded to the importance of flow during solution processing as it can direct the alignment and crystallization of conjugated polymers . However, only a few works have carried out a more mechanistic study of the effect of flow gradients on alignment. Wie and Mackay et al. have shown that the continuous application of steady shear to concentrated P3HT solutions can promote the growth of long, crystalline fibrils. In our prior work , we used finite element simulation and experiments to show how the flow field and shear rate in the meniscus dictates conjugated polymer assembly and subsequent morphological transitions during printing, such as highly aligned films produced at intermediate printing speeds. These results have highlighted the importance of fluid flow during solution processing but it remains to be seen how the flow type and strength directly impacts the conjugated polymer solution state conformation or alignment in a quantifiable manner.