نتایج جستجو برای: hexagonal structure

تعداد نتایج: 1577088  

2010
Jack L. Taylor

The crystal structure of the intermediate phases in the binary systems of titanium with iron, cobalt, and nickel has been studied and the results compared with those previously published. The phases of the Ti2X type are face-centered cubic with % atoms per cell, and the TiX phases are body-centered cubic. TiFe, and Tic02 are hexagonal but not isomorphous. The nickel-rich phase has the compositi...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2010
Hai-Feng Ji Xiaohe Xu

We report a well-defined, organic, hexagonal nanopillar array on a gold surface. The array was prepared from a cyanuric acid-melamine complex by means of sequential mixing on the gold surface. These nanopillars had uniform diameters of 200-400 nm and were 1 microm in length. They were well faceted with hexagonal cross sections. The nanopillars had a crystalline structure, and the pillars exhibi...

ژورنال: سلامت و محیط زیست 2017

Background and Objective: All around the worlds, wastewater containing dye pollutants are considered serious problem. Rhodamine B dye which is used in textile, leather, drug, and cosmetic industries exert carcinogenic and strong toxic effects. The aim of this research was to remove of Rhodamine B dye by nanowires of zinc oxide doped with lanthanum. Materials and Methods: In this work, nanowire...

Masoudi, , Tondkar, ,

Biotite is a common rock-forming mineral and accepts a variety of elements in its structure. The valuable information of crystallization conditions of the biotite mineral obtain on natural biotite composition. The biotite mineral is one of the main mineral phases of pelitic rocks which are formed in a wide range of geological conditions. In this research, microscopic mineralogy, Raman spectrosc...

2002
Hidenori Sato Hiroto Matsuoka Akira Onozawa Hitoshi Kitazawa

A new data structure for representing the color of rays from multiple-view images is presented. The structure is a hexagonal tessellation generated from a buckyball. Using the structure, the captured colors are represented as pixel values of a hexagonal image, and the image is finally saved as a compressed normal image after a simple transformation without loss of connectivity. A surface light ...

Journal: :Wireless Communications and Mobile Computing 2003
Hung-Chi Chu Rong-Hong Jan

One of the most important applications for mobile commerce is location-based application and the core technology of location-based applications is the location-determination technology. In this paper, we present a location-sensing method, called cell-based location-sensing method and its positioning accuracy for the wireless networks with hexagonal structure and mesh structure. In addition, the...

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2009
S Harikrishnan S Rößler C M Naveen Kumar H L Bhat U K Rößler S Wirth F Steglich Suja Elizabeth

The floating-zone method with different growth ambiences has been used to selectively obtain hexagonal or orthorhombic DyMnO(3) single crystals. The crystals were characterized by x-ray powder diffraction of ground specimens and a structure refinement as well as electron diffraction. We report magnetic susceptibility, magnetization and specific heat studies of this multiferroic compound in both...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده فیزیک 1390

in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...

Gallium nitride (GaN) nanostructures (NS) were synthesized using pulseddirect current plasma enhanced chemical vapor deposition (PDC-PECVD) on quartzsubstrate at low temperature (600°C). Gallium metal (Ga) and nitrogen (N) plasma wereused as precursors. The morphology and structure of the grown GaN NS werecharacterized by field emission scanning electron microscope (FE-SEM), transmissionelectro...

maryam Hojatifar Peyman Sahebsara,

 The two-dimensional structure of graphene, consisting of an isotropic hexagonal lattice of carbon atoms, shows fascinating electronic properties, such as a gapless energy band and Dirac fermion behavior of electrons at fermi surface. Anisotropy can be induced in this structure by electrochemical pressure. In this article, by using tight-binding method, we review anisotropy effects in the elect...

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