Figure 1.

A schematic diagram of the 1DPC coated with PMMA film. The thicknesses of the repeated SiO₂ and Si₃N₄ layers are 126 nm and 78 nm, respectively. The thickness of the top SiO₂ layer is 152 nm. A various thickness of the PMMA film is used and represented with t. The incident angle is θ. The horizontal blue dashed line (at Z = 0 nm) represents the 1DPC-PMMA interface. I represents the incident light and R the reflected light.