Fig. 4
From: Surrogate-assisted optimization of roll-to-roll slot die coating
Graph showing difference of wet coating thickness from target and the standard deviation of wet coating thickness for roll-to-roll slot die coating experimental data. The location of a theoretical ideal coating (which may not exist) is indicated by the red ellipse. Region A denotes a region with good thickness, bad uniformity, B bad thickness, bad uniformity and C bad thickness, good uniformity. A schematic illustrating the cross-sections of coatings within these regions is shown below the graph, with the red dashed line indicating the target thickness.
