Polymer bilayer density profiles

Figure 3 Density profiles of a polymer bilayer (hydrogenated polystyrene [h-PS] on deuterated polyvinylpyrridine [d-P2VP]) on silicon. The x-ray density is shown on the left hand, the respective neutron density on the right side.

Figure 4 Examples for calculated x-ray reflectivities. The left column displays the density profile p(z) the center column dp(z)/dz and the right column the specular reflected intensity of the respective profile. Top row single Si-surface. Second row Si-substrate with one polymer layer. Third row Si-substrate with a polymer bilayer, the contrast is 10%. Fourth row Si-substrate with a high-contrast bilayer.

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