title: Three-dimensional structure of a single colloidal crystal grain studied by coherent x-ray diffraction.
abstract: A coherent x-ray diffraction experiment was performed on an isolated colloidal crystal grain at the coherence beamline P10 at PETRA III. Using azimuthal rotation scans the three-dimensional (3D) scattered intensity from the sample in the far-field was measured. It includes several Bragg peaks as well as the coherent interference around these peaks. The analysis of the scattered intensity reveals the presence of plane defects in a single grain of the colloidal sample. We confirm these findings by model simulations. In these simulations we also analyze the experimental conditions required to phase the 3D diffraction pattern from a single colloidal grain. This approach has the potential to produce a high resolution image of the sample revealing its inner structure, with possible structural defects.
authors.affiliation: Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, D-22607 Hamburg, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Gulden
authors.forename: O M
authors.initials: OM
authors.lastname: Yefanov
authors.forename: A P
authors.initials: AP
authors.lastname: Mancuso
authors.forename: R
authors.initials: R
authors.lastname: Dronyak
authors.forename: A
authors.initials: A
authors.lastname: Singer
authors.forename: V
authors.initials: V
authors.lastname: Bernátová
authors.forename: A
authors.initials: A
authors.lastname: Burkhardt
authors.forename: O
authors.initials: O
authors.lastname: Polozhentsev
authors.forename: A
authors.initials: A
authors.lastname: Soldatov
authors.forename: M
authors.initials: M
authors.lastname: Sprung
authors.forename: I A
authors.initials: IA
authors.lastname: Vartanyants