Premium
Structure and stacking order in crystals of asymmetric dumbbell‐like colloids
Author(s) -
Pal Antara,
Meijer JanneMieke,
Wolters Joost R.,
Kegel Willem K.,
Petukhov Andrei V.
Publication year - 2015
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s1600576714028222
Subject(s) - stacking , scattering , dumbbell , materials science , crystallography , reciprocal lattice , bragg's law , molecular physics , wide angle x ray scattering , crystal (programming language) , small angle x ray scattering , optics , condensed matter physics , chemistry , small angle neutron scattering , neutron scattering , diffraction , physics , medicine , organic chemistry , computer science , programming language , physical therapy
The crystalline structure assembled out of charge‐stabilized asymmetric dumbbell‐like colloidal particles in ethyl alcohol by sedimentation has been probed using small‐angle X‐ray scattering with microradian resolution. The existence of plastic face‐centered cubic crystals was inferred from the observed Bragg peaks. The presence of stacking faults and the mosaic structure of the sample lead to the appearance of diffuse scattering, forming Bragg scattering cylinders in the three‐dimensional reciprocal space. The quality of the crystalline structure, as ascertained from a detailed analysis of the diffuse scattering intensity distribution, indicates the presence of only 1.5% of stacking faults between the hexagonal close‐packed layers.