Results 261 to 270 of about 14,400,955 (339)

Crashworthiness Optimization of a Vertex Fractal Hexagonal Structure

International Journal of Computational Methods, 2020
Thin-walled structures are used in automotive industry due to their excellent lightweight and crashworthiness properties. This paper proposes a vertex fractal multi-cell hexagonal structure to develop a novel lightweight energy absorber.
Yong Zhang, Ning He, Yubo Hou
semanticscholar   +1 more source

Nets with Hexagonal Cell Structure

Journal of Elasticity, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
DAVINI, Cesare, GOVERNATORI P.
openaire   +1 more source

Electron localizability for hexagonal element structures

Journal of Computational Chemistry, 2008
AbstractFor 21 elements crystallizing in hexagonal structure density functional calculations were performed. The topology of the electron localizability indicator (ELI) allows classifying the elements as appertaining to one of six patterns. The bifurcation diagrams as well as the electron populations in ELI basins for each pattern are discussed. © 2008
Baranov, A., Kohout, M.
openaire   +3 more sources

Electronic structure of hexagonal

Journal of Physics: Condensed Matter, 1997
We have investigated the electronic structure of hexagonal through theoretical as well as experimental means. Two different calculations have been carried out within the LMTO and tight-binding - LMTO methods. The experimental procedure involved soft-x-ray spectroscopy complemented by photoemission measurements.
Esther Belin-Ferré, Guy Trambly de Laissardière, Pierre Pecheur, Anne Sadoc, Jean Marie Dubois   +4 more
openaire   +1 more source

First principles comparative studies of thermoelectric and other properties in the cubic and hexagonal structure of CsCdCl3 halide perovskites

, 2019
We present First-principles studies of cubic and hexagonal structured CsCdCl3, using Norm Conserving (PBE-NC) and Projected Augmented Wave (PBE-PAW) pseudopotentials.
Ridwan O. Agbaoye, P. O. Adebambo, G. Adebayo   +2 more
semanticscholar   +1 more source

Hexagonal structures in GaAs nanowhiskers

Technical Physics Letters, 2008
We have studied the crystal structure of GaAs nanowhiskers grown by molecular beam epitaxy (MBE) on gold-activated GaAs(111)B substrates. The results of reflection high-energy electron diffraction and transmission electron microscopy showed that the MBE-grown GaAs nanowhiskers can form a crystal structure of sphalerite, wurtzite, or an intermediate ...
I. P. Soshnikov, G. E. Cirlin, N. V. Sibirev, V. G. Dubrovskii, Yu. B. Samsonenko, D. Litvinov, D. Gerthsen   +6 more
openaire   +1 more source

Kekulé’s Hexagonal Structure for Benzene

Chemistry Education, 2015
In 1865, 150 years ago, German chemist August Kekulé (1829–1996) proposed the cyclohexatriene structure for benzene. Kekulé’s life and career with an emphasis on his theoretical and experimental research on benzene are discussed in this article.
George B. Kauffman, Jean-Pierre Adloff
semanticscholar   +1 more source

Magnetic Structure of Hexagonal Ba2NiReO6

AIP Conference Proceedings, 1975
The compound Ba2NiReO6 (prepared by the hydrothermal method) has been reported to have a cubic, ordered perovskite type structure. Solid state synthesis of the polycrystalline compound has yielded a six layered hexagonal structure. Long wavelength neutron powder data (λ=2.359A) revealed a contribution from magnetlc scattering which disappeared around ...
C. P. Khattak, D. E. Cox, F. F. Y. Wang
openaire   +1 more source

Band structure of hexagonal CdTe

Physics Letters A, 1969
Abstract The reflection spectrum of hexagonal CdTe is measured in the region of exciton bands. The magnitudes of spin-orbit splitting, the splitting by the crystal field as well as the electron and hole effective masses are calculated.
Yu.P. Gnatenko, M.V. Kurik, V.V. Matlak
openaire   +1 more source

Crystal structure of hexagonal polythiomethylene

Die Makromolekulare Chemie, 1966
AbstractThe crystal structure of hexagonal polythiomethylene is described. It has a hexagonal unit cell with a = 5.07 Å. and c = 36.52 Å. The polymer chains are helicoidal with the axis of the helix parallel to c. In the unit cell are comprised 17 CH2Sunits and 9 turns of the helix.
Gianalvise Carazzolo, Giovanni Valle
openaire   +1 more source