Figure 4
Radial average of Fig. 3. The circles are experimental data after background subtraction and the continuous red curve is calculated from a simulated diffraction pattern. The simulation represents an ensemble of gold spheres with normally distributed diameters with central diameter of 50.3 nm and standard deviation of 3.8 nm. This is in close agreement with the manufacturer's analysis, which claims 8% coefficient of variation. The solid grey curve shows the scattering pattern from a gold buffer solution for gold spheres that was subtracted as background from the gold particle pattern. |