Figure 9.

Neutron reflectivity profiles of a hydrogenous polystyrene layer (thickness = 971 Å) spin-coated onto silicon at the solid–liquid interface under four different isotopic contrasts of D₂O (red), CM4 (blue), CMSi (green) and H₂O (yellow). The data points are the collected data and the solid lines are a co-refined fit using a slab model. Data are offset for clarity. The lower panel shows the residuals between the data and fits normalized to Q ⁴. (Inset) The corresponding real-space SLD profiles.