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Measuring and Reporting Electrical Conductivity in Metal
Measuring and Reporting Electrical Conductivity in Metal

In situ transmission electron microscopy of stress
In situ transmission electron microscopy of stress

... Samples are made from the two different kinds of Ni-rich NiTi, a sheet of superelastic polycrystalline NiTi with a thickness of 120 ␮m containing multiple dislocations and nanosized Ni4 Ti3 precipitates and single crystals of Ni50.2 Ti49.8 (at.%) grown by the Bridgman technique. All samples were pre ...
Introduction to Alloy Phase Diagrams
Introduction to Alloy Phase Diagrams

... point P, an invariant point that occurred by coincidence. (Three-phase equilibrium is discussed in the following section.) Then, if this two-phase field in the solid region is even further widened so that the solvus lines no longer touch at the invariant point, the diagram passes through a series of ...
Structural changes of injection molded starch during heat treatment
Structural changes of injection molded starch during heat treatment

... injection-molded samples (middle). Native starch exhibits two different types of diffraction patterns that are related to the crystal form A (two upper curves), predominant in cereal plants (corn), and the crystal form B (four lower curves), more abundant in tubercles (potato) and in high-amylose st ...
Herbivory and Calcium Concentrations Affect
Herbivory and Calcium Concentrations Affect

... taken up by the plant will be similar to that absorbed at a `normal' level of calcium. Therefore, it is possible that fewer crystals were formed in seedlings grown in normal and high calcium levels compared to low calcium levels because these seedlings absorbed less calcium. Unlike many studies of C ...
Far- and near-field investigations on the lasing modes in
Far- and near-field investigations on the lasing modes in

The (Greek) Key to Structures Review of Neural Adhesion Molecules
The (Greek) Key to Structures Review of Neural Adhesion Molecules

Andrea Marino - Université de Rennes 1
Andrea Marino - Université de Rennes 1

The Crystal Structure of a Fusagenic Sperm Protein Reveals
The Crystal Structure of a Fusagenic Sperm Protein Reveals

Full-Text PDF
Full-Text PDF

Data mining and accelerated electronic structure theory as a tool in
Data mining and accelerated electronic structure theory as a tool in

... calculations[9] needed to be updated after several trial calculations, in order to ensure accuracy of the electronic structure and total energy of the material. Hence all steps of the simulations of this work have been made by artificial intelligence and high performance computation. The algorithm w ...
Tunneling Transistors Based on Graphene and 2
Tunneling Transistors Based on Graphene and 2

... Fig. 1 is a schematic representation of the structure of crystals of various dimensions. The bottom row shows the atomic building blocks. The first column shows the ubiquitous 3-D crystal semiconductors. The second column shows the emerging family of 2-D crystals and their many variants. The third a ...
Clay Terms April 2017 - The Clay Minerals Society
Clay Terms April 2017 - The Clay Minerals Society

... the case of “particle size” for “clay”). The definitions provided below are terms as used in clay science and thus, this glossary is not a compendium, as is the case for the AGI Glossary. However, the definitions do not and should not stray from the basic science definitions as one would have in che ...
Viscosity changes during crystallization of a shoshonitic magma
Viscosity changes during crystallization of a shoshonitic magma

Theoretical studies of light propagation in photonic and plasmonic devices Link¨
Theoretical studies of light propagation in photonic and plasmonic devices Link¨

... in the spectra provide very effective confinement of the light within photonic crystals that can be exploited as a basis for a large number of photonic devices. Creating linear defects, for instance, will form low-loss waveguides, whereas point defects can act as high-quality microcavities. Another ...
Ultrasonic testing of grain distortion direction in cold formed
Ultrasonic testing of grain distortion direction in cold formed

... 25 mm high, was plane parallel cut on two sides so that cut thickness was also 25 mm. The samples suffered 25% reduction over deformation process before cutting. Fig. 3 presents schematic overview of extrusion process and cut sample. Ultrasonic measurements were conducted in places 1a and 2a, on the ...
Minerals and Mineral Groups
Minerals and Mineral Groups

Two Novel Bi-Based Borate Photocatalysts: Crystal Structure
Two Novel Bi-Based Borate Photocatalysts: Crystal Structure

... Crystal Structures of Bi4B2O9 and Bi2O2[BO2(OH)]. Bi4B2O9 crystallizes in the monoclinic space group P2/c with the unit cell parameters a = 11.127(9) Å, b = 6.641(5) Å, c = 11.058(9) Å, and β = 90.91(9)°.27 The crystal structure was shown in Figure 1a. It was constructed by BO3 triangles, BiO4 tetra ...
F: Chapter 1: Minerals - Jenkins Independent Schools
F: Chapter 1: Minerals - Jenkins Independent Schools

Thermally Driven Crossover from Indirect toward Direct Bandgap in
Thermally Driven Crossover from Indirect toward Direct Bandgap in

... MoSe2 and MoS2 from bulk to few-layer and to the single-layer limit. According to our DFT calculations as well as previously reported studies on MoSe2 and MoS2,21,25 these two materials possess indirect bandgap in bulk and become direct bandgap in the 2D limit. Therefore in those limits, one would e ...
vapor phase transport vpc materials synthesis, crystal growth
vapor phase transport vpc materials synthesis, crystal growth

... • (C) Schematic of a nanowire as a resonance cavity with two naturally faceted hexagonal end faces acting as reflecting mirrors • Stimulated emission from the nanowires collected in the direction along the nanowire’s end-plane normal (the symmetric axis) • The 266-nm pump beam focused on nanowire ar ...
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paper
paper

Cation distribution and crystal chemistry of Y3Al5
Cation distribution and crystal chemistry of Y3Al5

... parameters were converted to an anisotropic model. The ®nal R and wR factors for each specimen were 0.014±0.029 and 0.009±0.026, respectively (Table 1).² Crystallographic data and details of the structure re®nements are summarized in Table 1. The re®ned positional, occupancy and equivalent isotropic ...
Chiral liquid crystals
Chiral liquid crystals

... low molar mass liquid crystals, i.e., by incorporating a chiral moiety within the structure (usually as part of the terminal chain because of simplicity). Chiral liquid crystal polymers are commonly designed and synthesised to exhibit the chiral smectic C (SC*) phase because of their potential use a ...
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Crystal structure



In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms, ions or molecules in a crystalline liquid or solid. It describes a highly ordered structure, occurring due to the intrinsic nature of its constituents to form symmetric patterns.The crystal lattice can be thought of as an array of 'small boxes' infinitely repeating in all three spatial directions. Such a unit cell is the smallest unit of volume that contains all of the structural and symmetry information to build-up the macroscopic structure of the lattice by translation.Patterns are located upon the points of a lattice, which is an array of points repeating periodically in three dimensions. The lengths of the edges of a unit cell and the angles between them are called the lattice parameters. The symmetry properties of the crystal are embodied in its space group.A crystal's structure and symmetry play a role in determining many of its physical properties, such as cleavage, electronic band structure, and optical transparency.
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