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Destruction of long-range order recorded with in situ small-angle x-ray diffraction in drying colloidal crystals



Destruction of long-range order recorded with in situ small-angle x-ray diffraction in drying colloidal crystals



Physical Review. E Statistical Nonlinear and Soft Matter Physics 69(3 Pt 1): 031405



High-resolution synchrotron small-angle x-ray diffraction is applied to characterize the structure and long-range order in a sedimentary hard-sphere colloidal crystal before and during its drying. The principles of the technique and the influence of the coherence properties of the x-ray beam are discussed in detail. The capillary forces generated during the drying process are shown to destroy the long-range order and to break the crystal into smaller crystallites with slightly different orientations. The diffraction is shown to switch from the dynamic regime in the long-range-ordered crystal to nearly kinematic diffraction in the mosaic (short-range-ordered) crystal.

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Accession: 048742426

Download citation: RISBibTeXText

PMID: 15089292

DOI: 10.1103/physreve.69.031405


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