for the first time this study reported the success of using nanocrystalline hexagonal close-packed (hcp) nickel (ni) modified composite graphite (cg) electrode (hcp-nano ni/cg) for the electrocatalytic oxidation of glycerol in alkaline medium (0.1 m koh). the hcp-nano ni/cg electrode had an improve response and specificity on the electrocatalytic oxidation of glycerol over the bare cg. the elec...

Cellular automata (CA) modeling is a powerful and efficient tool for simulating the dynamic evolution of polycrystalline microstructures in modern materials metallurgy studies, such as solidification, plastic deformation recrystallization. We propose novel model to calculate shape factor grains three-dimensional hexagonal grid (3D-HEX) CA, which overcomes disadvantages 3D-HEX complex algorithms...

Nonpotential effects in nonlinear evolution of Marangoni convection patterns are investigated analytically and numerically. Three manifestations of nonpotential effects are considered: (i) spatial modulations of hexagonal patterns; (ii) interaction between a short-scale hexagonal pattern and a long-scale slow deformational (Goldstone) mode; (iii) generation of the mean flow by the free-surface ...

The vertex set of the resonance graph of a hexagonal graph G consists of 1-factors of G, two 1-factors being adjacent whenever their symmetric difference forms the edge set of a hexagon of G. A decomposition theorem for the resonance graphs of catacondensed hexagonal graph is proved. The theorem intrinsically uses the Cartesian product of graphs. A canonical binary coding of 1-factors of cataco...

Hexagonal Ag/Pt nanoshells were prepared by using a hexagonal Ag nanoplate as the displacement template and by introducing Pt ions. The prepared Ag/Pt nanoshells played the role of an electrocatalyst in an oxygen reduction process. Compared to spherical Pt and Ag/Pt nanoparticles, the hexagonal Ag/Pt nanoshells showed higher activity for oxygen electroreduction.

In our present work undoped CdS and Cu doped CdS thin films were deposited on glass substrate by chemical bath method. XRD analysis of the as-prepared sample indicated CdS:Cu nanorods to be mixture of two phases namely hexagonal and cubic. It has been observed that one particular plane (100) has preferentially grown as the maximum intense peak whereas the other two planes (101) and (102) have d...

This paper studies the construction of highly symmetric compactly supported wavelets for hexagonal data/image and triangle surface multiresolution processing. Recently hexagonal image processing has attracted attention. Compared with the conventional square lattice, the hexagonal lattice has several advantages, including that it has higher symmetry. It is desirable that the filter banks for hex...

A first-principles pseudopotential study of neutral self-interstitial defects in silicon is reported, together with calculations for Pandey’s concerted exchange mechanism for selfdiffusion. The energies and structures of the fully relaxed hexagonal, tetrahedral, split-〈110〉, ‘caged’ (Clark S J and Ackland G J 1997 Phys. Rev. B 56 47), split-〈100〉, and bond-centred interstitials are calculated u...

Convex hexagonal systems (CHS) i. e., hexagonal systems with no bay regions are studied. Among CHS with a fixed number of hexagons, the species with minimal/maximal number of inlets have minimal/maximal or maximal/minimal values for a variety of vertex–degree-based topological indices. These extremal CHS are characterized. 1 Convex hexagonal systems In this paper we study a special class of hex...