Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Behnam Vessal"'
Autor:
Jahansooz Toofan, Behnam Vessal
Publikováno v:
International Journal of Chemical Kinetics. 53:1133-1142
Publikováno v:
Journal of Non-Crystalline Solids. :51-58
Neutron diffraction has been used to investigate the structure of two PbO–Ga 2 O 3 glasses with 67 mol% PbO and 80 mol% PbO, respectively. The Ga–O coordination polyhedron is a tetrahedron irrespective of composition. A simple structural model is
Autor:
Terry R. Coley, Osamu Terasaki, Momoji Kubo, Masahiko Katagiri, Akira Miyamoto, John M. Newsam, Yasuo Nozue, Behnam Vessal, Yongsheng Sean Li
Publikováno v:
Materials Science and Engineering: A. :112-115
We present the anharmonicity and roughening of Cu surfaces derived from the derivatives of the layer spacings and the surface energies with respect to temperature using the embedded-atom molecular dynamics method. The anharmonicity and roughening of
Autor:
Yasuo Nozue, Kazuya Tsujimichi, Masahiko Katagiri, Yongsheng Sean Li, Momoji Kubo, Behnam Vessal, Osamu Terasaki, Masaharu Komiyama, Akira Miyamoto
Publikováno v:
Surface Science. :900-904
The perpendicular forces acting on Pt adatoms from Pt(100) surfaces are presented using the embedded-atom method. The force maps are classified into four force regions. When the adatom is very close to the surface the force is repulsive (region 1). T
Publikováno v:
Journal of Non-Crystalline Solids. 196:187-192
Neutron diffraction has been performed on two samples from the PbO-Ga 2 O 3 glass-forming system with 67 mol% PbO and 80 mol% PbO. The results show that the structure involves a network based on GaO 4 tetrahedra. The PbO has an essential oxygen-provi
Publikováno v:
Journal of Non-Crystalline Solids. 196:233-238
Results are presented for the molecular dynamics simulation of three alkali silicate glasses previously studied by neutron diffraction. These simulations have been tested by rigorous comparison with the experimental data. The results demonstrate the
Publikováno v:
Molecular Simulation. 15:123-134
Atomistic computer simulation methods can yield unique insights into the structural properties of glasses. In this paper we report on the simulation of vitreous silica employing three-body terms and the subsequent characterization of the structure us
Publikováno v:
Chemical Physics Letters. 235:53-57
The structural and electronic properties of neutral cube-like MgO clusters comprising of 8, 18, 32, 48 and 64 atoms have been studied using density functional theory. Geometry optimization of all these stoichiometric clusters was done with C 2v symme
Autor:
Behnam Vessal
Publikováno v:
Journal of Non-Crystalline Solids. 177:103-124
Atomistic computer simulation methods can yield unique insights into the structural properties of glasses. The range and scope of the materials is illustrated by recent results on vitreous silica, silicate and phosphate materials.
Publikováno v:
Journal of Non-Crystalline Solids. 150:97-102
Pulsed neutron diffraction has been used to study the structure of three alkali silicate glasses of nominal composition SiO 2 · (M 2 O) 0.5 , with M = K, K 0.46 Li 0.54 and Li. The data are quantitatively consistent with the modified random network