Research Article

Modeling and Analysis of the Effect of Dip-Spin Coating Process Parameters on Coating Thickness Using Factorial Design Method

Figure 4

Optical micrographs of the cross-sectional area of the sample at different spin speeds: (a) 100 rpm and (b) 500 rpm (viscosity of 1100 mPa⋅s, withdrawal rate of 20 mm/s, and immersion time of 20 s).
(a)
(b)