The shear thinning characterization is used to compare the viscosity of different inks and how the inks respond to shear stresses. A perfectly Newtonian fluid will show no shear thinning or thickening behavior; the same viscosity would be retained at all shear rates. The inks presented here all demonstrate shear thinning behavior, and the viscosity and degree of shear thinning can be analyzed using the power law: η = 𝐾𝛾 where η is the viscosity, 𝛾 is the shear rate, K indicates the viscosity at 1 s -1 , and n indicates the degree of shear thinning. Newtonian fluids have an n value that equals 1 whereas highly shear thinning fluids have an n value closer to 0. These values are calculated for each ink in The recovery characterization demonstrates how quickly the ink returns to its original state after experiencing high stress. As discussed with the flow initiation, the ink should retain its shape after being extruded to achieve high quality prints. Although all the presented inks demonstrate relatively slow recovery, the highest MC concentration, 16 wt% MC, stands out as the ink that remains farthest from its pre-stress viscosity after 300 seconds of recovery time. Even the high concentration PEDOT:PSS inks with comparable viscosity show better recovery, indicating that high MC content beyond a threshold can result in detrimental characteristics.