Results 281 to 290 of about 14,400,955 (339)

Three-directional structural characterization of hexagonal packed nanoparticles by hexagonal digital moiré method

Optics Letters, 2012
We present the hexagonal digital moiré method for three-directional structural characterization of hexagonal packed nanostructures. A mismatch between a three-way grating and a nanoparticle assembly is shown to produce hexagonal moiré fringes due to the interference between three groups of parallel moiré patterns.
Wang, Qinghua, Kishimoto, Satoshi, Yamauchi, Yusuke   +2 more
openaire   +3 more sources

Structure of Hexagonal Silver Iodide

The Journal of Chemical Physics, 1963
A detailed three-dimensional refinement of the structure of hexagonal silver iodide from room-temperature photographic data showed very little deviation from the ideal wurtzite-type structure. Using anisotropic temperature factors a final R value of 6.6% was obtained. The space group is P63mc, a=4.592, c=7.510, c/a=1.635, μ=0.3747.
openaire   +1 more source

Structural properties of hexagonal boron nitride

Modelling and Simulation in Materials Science and Engineering, 2006
The electronic and structural properties of hexagonal boron nitride (BN) were studied using density functional theory calculations. Three different approximations for the exchange—correlation energy (the local density and two forms of the generalized gradient)—were used to calculate properties such as the bulk modulus, cohesive energy and lattice ...
N Ooi, V Rajan, J Gottlieb, Y Catherine, J B Adams   +4 more
openaire   +1 more source

The magnetic structure of hexagonal ErAl3

Physics Letters A, 1971
Abstract Hexagonal ErAl3 has been studied by neutron diffraction and the magnetic structure has been determined. ErAl3 orders antiferromagnetically with the moments directed along the c-axis. The observed magnetic moment is 6.15 μB at 2.15° K.
M.O. Bargouth, G. Will
openaire   +1 more source

Hexagonal vs Triangular Core Lightweight Mirror Structures

Applied Optics, 1972
The higher rigidity of a lightweight mirror structure with core ribs that form hexagonal cells, as compared with triangular cells, is demonstrated by holographic deflection measurements on 75-cm diam acrylic structural models.
openaire   +2 more sources

A fluorescent aptasensor for Staphylococcus aureus based on strand displacement amplification and self-assembled DNA hexagonal structure

Microchimica Acta, 2020
Rongfeng Cai, Fan Yin, Haohan Chen, Yaping Tian, Nandi Zhou   +4 more
semanticscholar   +1 more source

Formation of ordered hexagonal fiber structures

Journal of Optical Technology, 2003
Based on a solution of the problem of creating structures similar to point and line television rasters, a method has been developed for forming an ordered hexagonal fiber structure, based on the simplest transformations of the classical shape of assembly elements.
V. A. Kutasov, E´ . Yu. Bessonova
openaire   +1 more source

Band Structure of Hexagonal Tantalum Nitride

physica status solidi (b), 1980
AbstractThe energy band structure for hexagonal TaN is calculated.
A. V. Tsvyashchenko, S. V. Popova, E. S. Alekseev   +2 more
openaire   +1 more source

Electronic structure of hexagonal iron layers

Journal of Magnetism and Magnetic Materials, 1991
Abstract Using a tight-binding Hamiltonian, the recursion method and a self-consistent Stoner criterion to calculate the magnetic moments we have investigated the magnetism of 6 hexagonal layers of Fe between ruthenium layers on each sides. With ferromagnetic spin-polarization we obtain a magnetic moment of about 2μ B per atom in the 4 inner iron ...
M.O. Selme, P. Pecheur
openaire   +1 more source

The band structure of hexagonal NbN

Solid State Communications, 1989
Abstract Energy bands for hexagonal NbN are calculated. Comparison with previous results for carbides and nitrides leads to the hypothesis that in hexagonal structure (WC) they should be semimetals. Anomalous behaviour of degenerate band near Fermi energy is explained.
openaire   +1 more source