Heterogeneity of the Local Structure in Sub- and Supercritical Ammonia: A Voronoi Polyhedra Analysis

2011 ◽  
Vol 115 (31) ◽  
pp. 9646-9652 ◽  
Author(s):  
A. Idrissi ◽  
I. Vyalov ◽  
M. Kiselev ◽  
M. V. Fedorov ◽  
P. Jedlovszky
Keyword(s):  
Local Structure ◽  
Voronoi Polyhedra ◽  
Supercritical Ammonia

Local structure in sub- and supercritical CO2: A Voronoi polyhedra analysis study

2010 ◽  
Vol 153 (1) ◽  
pp. 20-24 ◽  
Author(s):  
A. Idrissi ◽  
I. Vyalov ◽  
P. Damay ◽  
M. Kiselev ◽  
Y.P. Puhovski ◽  
...  
Keyword(s):  
Local Structure ◽  
Supercritical Co2 ◽  
Analysis Study ◽  
Voronoi Polyhedra

scholarly journals The transition from order to disorder in Voronoi Diagrams with applications

2018 ◽  
Vol 10 (6) ◽  
pp. 82
Author(s):  
L. Zaninetti
Keyword(s):  
Local Structure ◽  
Geometrical Parameter ◽  
Voronoi Tessellation ◽  
Voronoi Diagrams ◽  
Disordered Structures ◽  
Cosmic Voids ◽  
Supercritical Ammonia

The transition from ordered to disordered structures in Voronoi tessellation is obtained by perturbing the seeds that were originally identified with two types of lattice in 2D and one type in 3D. The area in 2D and the volume in 3D are modeled with the Kiang function. A new relationship that models the scaling of the Kiang function with a geometrical parameter is introduced. A first application models the local structure of sub- and supercritical ammonia as function of the temperature and a second application models the volumes of cosmic voids.

scholarly journals The local environment of the molecules in water–DMSO mixtures, as seen from computer simulations and Voronoi polyhedra analysis

2015 ◽  
Vol 17 (5) ◽  
pp. 3470-3481 ◽  
Author(s):  
Abdenacer Idrissi ◽  
B. Marekha ◽  
M. Kiselev ◽  
Pál Jedlovszky
Keyword(s):  
Computer Simulation ◽  
Computer Simulations ◽  
Local Structure ◽  
Local Environment ◽  
Voronoi Polyhedra

The local structure of DMSO–water mixtures is studied by computer simulation and Voronoi analysis.

X-ray microprobe for materials science

1994 ◽  
Vol 52 ◽  
pp. 56-57
Author(s):  
G.E. Ice
Keyword(s):  
Crystallographic Orientation ◽  
Local Structure ◽  
Materials Science ◽  
Chemical Information ◽  
X Ray Diffraction ◽  
Ray Optics ◽  
X Ray ◽  
Novel Materials ◽  
New Information ◽  
Elemental Sensitivity

The increasing availability of synchrotron x-ray sources has stimulated the development of advanced hard x-ray (E≥5 keV) microprobes. With new x-ray optics these microprobes can achieve micron and submicron spatial resolutions. The inherent elemental and crystallographic sensitivity of an x-ray microprobe and its inherently nondestructive and penetrating nature will have important applications to materials science. For example, x-ray fluorescent microanalysis of materials can reveal elemental distributions with greater sensitivity than alternative nondestructive probes. In materials, segregation and nonuniform distributions are the rule rather than the exception. Common interfaces to whichsegregation occurs are surfaces, grain and precipitate boundaries, dislocations, and surfaces formed by defects such as vacancy and interstitial configurations. In addition to chemical information, an x-ray diffraction microprobe can reveal the local structure of a material by detecting its phase, crystallographic orientation and strain.Demonstration experiments have already exploited the penetrating nature of an x-ray microprobe and its inherent elemental sensitivity to provide new information about elemental distributions in novel materials.

DETERMINATION OF THE LOCAL STRUCTURE OF METALLIC GLASSES BY EXAFS

1982 ◽  
Vol 43 (C9) ◽  
pp. C9-43-C9-46 ◽  
Author(s):  
A. Sadoc ◽  
A. M. Flank ◽  
D. Raoux ◽  
P. Lagarde
Keyword(s):  
Metallic Glasses ◽  
Local Structure

LOCAL STRUCTURE IN InGaAsP QUATERNARY ALLOYS

1986 ◽  
Vol 47 (C8) ◽  
pp. C8-423-C8-426
Author(s):  
H. OYANAGI ◽  
Y. TAKEDA ◽  
T. MATSUSHITA ◽  
T. ISHIGURO ◽  
A. SASAKI
Keyword(s):  
Local Structure ◽  
Quaternary Alloys

LOCAL STRUCTURE AND THERMODYNAMICS OF II-VI AND III-V SEMICONDUCTORS BY EXAFS

1986 ◽  
Vol 47 (C8) ◽  
pp. C8-403-C8-406
Author(s):  
N. MOTTA ◽  
A. BALZAROTTI ◽  
P. LETARDI
Keyword(s):  
Local Structure
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