Figure 91

Fig. 91: Small-angle X-ray scattering patterns from a crystal of 242 nm diameter polystyrene colloidal spheres in methanol. The spheres have formed an fcc crystal with the 111 planes parallel to the wall of the capillary with a lattice parameter of 370 nm. In (a) the X-ray beam is parallel to a 111 axis. In (b), the X-ray beam is parallel to an 110 axis. The large number of rings further out in the scattering pattern are caused by the form factor of the monodisperse colloidal spheres.

Back