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SEM characterization of supraparticles formed by slow evaporation (68% humidity). The same colloid sizes and colloid volume fractions have been used as for the fast evaporation. (a) Top view of the supraparticle surface. (b) Overlay cross-view SEM images of the outer part of a supraparticle. (c) Relative volume fraction profile for large and small colloids in the supraparticle obtained under high humidity as a function of supraparticle radius.
