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Figure 4
(a) A two-dimensional profile of the complex degree of coherence determined with the scattering patterns from two non-identical colloidal particles (blue dots). The surface plot represents the result fitted by a two-dimensional Gaussian function. (b) The complex degree of coherence (red circles) and the visibility of the interference fringes originating from two particles with similar radii of ∼50 nm (blue triangles) and ∼75 nm (green squares) as a function of normalized inter-particle distance dn. The red curve represents a Gaussian fit to the dependence of the complex degree of coherence on dn.

IUCrJ
Volume 2| Part 6| September 2015| Pages 620-626
ISSN: 2052-2525
doi:10.1107/S2052252515015523