To determine if there is an effect from solvent viscosity on convective particle depositions, four alcohols with different viscosities were selected: methanol (MeOH), ethanol (EtOH), isopropanol (i-PrOH), and tert-butanol (t-BuOH). Each time the alcohol is extended by an additional carbon atom in this series of solvents, the viscosity at 50 °C increases by a factor of ~1.5 (Table ). Other physical properties of these alcohols, like density, surface tension, capillary length, and evaporative flux, are quite similar (Figure ). Table lists these physical properties at 50 °C, a temperature chosen because it was the chamber temperature during evaporation-induced particle self-assembly. The densities of the solvents are very close to one another, which means that the buoyancy of the particles will be roughly equivalent. The surface tensions, which dictate contact angle and capillary length, are also similar for this series of alcohols. Thus the calculated capillary lengths, which are defined as the typical length over which the evaporation contributes to particle deposition in a film, are also comparable for these solvents. The substrate is highly wetted by all four solvents, making it impossible to measure the contact angle. However, convective flow can bring particles to the drying line even when the contact angle is below 15°. Evaporative flux relates to how fast the solvent molecules diffuse away from the liquid-air contact line upon evaporation. The evaporation rate increases with increasing solvent vapor diffusion away from this interface leading to higher convective flux towards the meniscus. Although a strong correlation between evaporative flux and carbon chain length has been observed in the past, we measure similar values for EtOH, i-PrOH, and t-BuOH (Figure ) at 50 °C, which we attribute to the branching of the longer chain alcohols that seems to increase their evaporative flux. MeOH was found to have an evaporative flux approximately double that of the other solvents, attributed to its higher volatility. Among these solvents, there are small variations in solvent properties with a large variation in viscosity. Thus, if viscosity were to have an effect, we expect to observe it beyond the contribution of the other multiple factors. For the self-assembly studies, silica spherical particles were produced using a seeded Stöber synthesis (Figure ), which had a mean diameter of (250 ± 3) nm (Figure ). The monodispersity of these particles is helpful in obtaining close-packed, organized assemblies. The particles were then deposited onto silicon wafers via dip-coating in a temperature-controlled chamber. Figure shows SEM images of films prepared in MeOH, EtOH, i-PrOH, and t-BuOH over a range of speeds within the convective and the transitional convective/advective regime, with higher magnification images shown in Figure . The images have been treated so that the sections of bare substrate appear red, and the areas with particle coverage are displayed in blue.