Figure 7
Small-angle scattering by a spherical nanoparticle of radius R = 50 Å. The phase maps ϕθ(x, y, z) corresponding to q values of (a) 0.03 Å−1, (b) 0.09 Å−1 and (c) 0.12 Å−1 are represented in colour. For any value of q, the nanoparticle is mentally split into slices with uniform phases, and the resulting complex amplitudes are added (as in Fig. 6). The resulting scattering pattern, given by equation (8), is shown on the right. |