Double hexagonal close-packed structure revealed in a single colloidal crystal grain by Bragg rod analysis
نویسندگان
چکیده
منابع مشابه
Uniaxial stress-driven coupled grain boundary motion in hexagonal close-packed metals: A molecular dynamics study
Stress-driven grain boundary (GB) migration has been evident as a dominant mechanism accounting for plastic deformation in crystalline solids. Using molecular dynamics (MD) simulations on a Ti bicrystal model, we show that a uniaxial stress-driven coupling is associated with the recently observed 90 GB reorientation in shock simulations and nanopillar compression measurements. This is not consi...
متن کاملThree-dimensional structure of a single colloidal crystal grain studied by coherent x-ray diffraction.
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 reveal...
متن کاملRovibrational states of a tetrahedral molecule in a hexagonal close-packed crystal
The vibration-rotation states of a tetrahedral molecule in a field of D3h symmetry are studied by an extended group theory. Symmetry adapted rotational wave functions for the ground and the triply degenerate excited vibrational states are constructed. The crystal field potential is derived explicitly for a tetrahedral molecule in a hexagonal close-packed crystal. As an example, the rovibrationa...
متن کاملGrain neighbour effects on twin transmission in hexagonal close-packed materials
Materials with a hexagonal close-packed (hcp) crystal structure such as Mg, Ti and Zr are being used in the transportation, aerospace and nuclear industry, respectively. Material strength and formability are critical qualities for shaping these materials into parts and a pervasive deformation mechanism that significantly affects their formability is deformation twinning. The interaction between...
متن کاملModulating two-dimensional non-close-packed colloidal crystal arrays by deformable soft lithography.
We report a simple method to fabricate two-dimensional (2D) periodic non-close-packed (ncp) arrays of colloidal microspheres with controllable lattice spacing, lattice structure, and pattern arrangement. This method combines soft lithography technique with controlled deformation of polydimethylsiloxane (PDMS) elastomer to convert 2D hexagonal close-packed (hcp) silica microsphere arrays into nc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Applied Crystallography
سال: 2014
ISSN: 1600-5767
DOI: 10.1107/s1600576714010346