Table 2. Surface characterization parameters resulting from fitting the NR curves for the DC film measured in air, D₂O and with the adsorbed HRP layer.

Sample	Thickness (Å)	SLD (10−6 Å−2)	Volume fraction	Roughness (Å)
DC/Air	90	5.5	NA	15
DC/D2O	280	7.1	33 (cellulose)	8
HRP	98	3.9	20 (HRP)	17