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 crystal lattices

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updated Wed. January 3, 2018

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Inclusions can consist of other mineral crystals that look like what they are called -- for example, a break in the crystal lattice is called a feather because it can resemble the texture of a feather. A pinpoint inclusion is just that -- it looks like a pinpoint -- while thin, elongated inclusions are called needles.
When pure water forms ice, it forms a crystal lattice structure. When salt or beet juice is thrown in the mix, it disrupts this crystal. On a molecular level, this happens because the salt ... As you lower the temperature some of the pure water starts to form ice crystals. The reason is that although the frozen water ...
Nanorods made of bismuth sulfide kill tumor cells with heat when they are irradiated with near-infrared light (NIR). Chinese scientists are now making these weapons more powerful by remodeling the defect state of the nanorod crystal lattice by adding gold nanodots. As reported in the journal Angewandte ...

Heusler's alloys with baffling properties were the start of the discovery of several classes of material where symmetry is fundamental to controlling the behaviour of the electrons that move through the crystal lattice. The key to these novel properties lies in the interaction between the symmetry of ions held in ...
Sequence of the phase transition from diamond to graphite. Credit: DESY, Nikita Medvedev. There are two possible paths: the common so-called thermal transition during which the absorbed energy is transferred to the internal crystal lattice of the diamond until it re-organises itself into the graphite structure.
The abundance of fishes both in the Arctic and Antarctic swimming amongst ice crystals indicates that they can avoid freezing (Figure 1). ... This lattice matching found in some of the AFPs is thought to be involved in their recognition of specific ice crystal planes and involved in their adsorption to the ice ...
The atoms are arranged in a lattice, or framework, that is stable in the material's normal state. For this work, Kourkoutis' group examined their manganite while in a charge- ordered state. STEM imaging revealed miniscule shifts in a single crystal's atomic lattice, which could be measured by comparing ...
Google is celebrating German physicist Max Born's contribution to the field of quantum mechanics in the form of a Doodle. Quantum mechanics is a part of physics which studies matter at its smallest form. The German physicist's contribution led to a number of inventions in the field of medicine as well as ...
There are two possible paths: the common so-called thermal transition during which the absorbed energy is transferred to the internal crystal lattice of the diamond until it re-organises itself into the graphite structure. Another is a non-thermal mode, where the energy absorbed by just a small fraction of the ...
Sequence of the phase transition from diamond to graphite. Credit: DESY, Nikita Medvedev. There are two possible paths: the common so-called thermal transition during which the absorbed energy is transferred to the internal crystal lattice of the diamond until it re-organises itself into the graphite structure.
The first investigates Bragg diffraction, a fundamental interaction between electrons and matter that involves the conversion of crystal momentum into electron momentum as an incoming electron is scattered by the crystal lattice. The researchers used attosecond-resolved diffraction of single-crystal silicon to ...
Movements or bends in the material take the crystal atomic lattice and reorient it, or transition it, from one crystal lattice to an entirely different crystal lattice. ... This means that while the spring steel can withstand 0.3 percent of strain before it dents and the crystals permanently rearrange, the NiTi shape ...
Polishchuk et al. found that the single-crystal calcite lenses contained arrays of calcite nanoprecipitates, ∼5 nm in diameter, that have a higher magnesium content than the host crystal. Further investigation revealed that these nanoprecipitates were coherent with the host, meaning that the crystal lattice ...
The atoms are arranged in a lattice, or framework, that is stable in the material's normal state. For this work, Kourkoutis' group examined their manganite while in a charge- ordered state. STEM imaging revealed miniscule shifts in a single crystal's atomic lattice, which could be measured by comparing ...

Even crystalline matter is typically porous to gases with small enough molecules or atoms, such as helium, which diffuse through the crystal lattice structure. What kind of substances flow, or are transported, through porous media? The way that water moves through plant tissue and soil is an example of flow ...
These should normally allow high levels of electricity conduction because fluorine atoms substituted on oxygen lattice sites are each expected to give an ... fluorine atoms that provide an additional free electron, another one occupies a normally unoccupied lattice position in the tin dioxide crystal structure.
The tribo- or piezoelectric properties of a material are determined by the crystallographic symmetry of the material, and vanish when the crystal lattice has a centre of symmetry. However, the Clemson research team built on previous work by researchers in Japan showing they could remove the centre of ...
And even today, there are still significant aspects of exactly how neutrons from nuclear reactions scatter through the crystal lattice of graphite. In fact, Smith says, a new physics model to describe these interactions has recently been proposed, and using the graphite pile "we want to design experiments to ...
Microstructured optical fibers used in pressure sensing measurements. (a) Photonic-crystal fiber1; (b) microstructured fiber with a triangular lattice of holes2; (c) side-hole photonic-crystal fiber3. Typically, microstructured optical fibers for pressure sensors are configured so that the application of an external load causes an ...
Diamond is a form of pure carbon in which the atoms are arranged in a crystal lattice, with each carbon atom surrounded by four other carbons at the corners of a tetrahedron. The carbon-carbon bonds in diamond are known as sp3 bonds. The orderly arrangement of tetrahedral structures which repeats ...
The globalPhotonic crystals Marketresearch report is classified on the ... crystal segment is of great concern due to the dimensional lattice ...
Most snowflakes are agglomerations of irregular crystals. ... composition (H20), and orderly arrangement of its atoms in a lattice. ... It's known that snow crystal shapes are largely determined by temperature and humidity.
germanium (Ge) is generally grown on expensive single-crystal substrates, adding ... however, is a challenge because the crystal lattices typically don't align. ... In addition to alleviating the constraints of lattice matching, vdW ...
Eventually, the high cost of developing germanium crystals concealed its efficiency, and silicon thus captured the field. However, this supremacy is ... The atoms in semiconducting materials must be steadily arranged in a precise crystal lattice in order to efficiently conduct electrical charge. To produce that ...
Ultimately, the high cost of developing germanium crystals eclipsed its ... materials must be consistently arranged in a precise crystal lattice.
Modern reviews on crystal growth and defects in crystals overlook the fact that ... with twisted and bent morphologies and curved crystal lattices.
The difference between Coulomb crystals and normal crystals is that every charge at the nodes in the lattice interact with each other through ...
A Coulomb crystal forms when bare atomic nuclei align into a lattice at densities and temperatures where the average kinetic energy of ions is ...
In a crystal, atoms are linked by chemical bonds. In origami, vertices are linked by creases. Even with a lattice as small as 10 units wide, Assis said, such a ... Defects appear in crystals when you crank up the temperature.
The sliding of a perfect twin boundary, with mirrored crystal lattices on ... up of an orderly three-dimensional array of atoms in a lattice structure, ...
... and providing insight into lattice dynamics, structural phase transitions, ... of solid-state chemical reactions, crystals near phase transitions, ...
... currents, are unable to reach their lowest energy state due to the way they are geometrically arranged on the material's crystal lattice.
Earlier this year, the same team solved the crystal structure of LSD bound ... a tightly packed crystal lattice, then shoot x-rays at the crystal and can ... were packed tightly into crystals that could then be bombarded with x-rays.
... applied physics, and astronomy at Rensselaer Polytechnic Institute, has built a nanostructure whose crystal lattice bends light as it enters the ...
This means that an external electric field distorts the crystal lattice, whereas conversely, mechanical forces on the lattice can create electric ...
However, polarons -- excess charges trapped in the crystal lattice -- can also be at the origin of surface reconstructions, as Cesare Franchini, ...
The other was a triangular lattice with cylindrical air holes. Kante compares the different crystals to a bagel and a pretzel; though they're both ... In a photonic crystal topological insulator, the flow of light is restricted to the place ...
... when adjoining lattices (the 3D arrangement of atoms inside a crystal) of ... adjoining grains and no matching of the adjacent crystal lattices.
X-rays can penetrate crystals and the lattice structures of metals and their ... These are not the single-crystal cast blades that operate in the ...
In a glass, molecules are arranged randomly, rather than in an ordered crystal lattice. But what actually happens during the setting process?
... adjoining grains and no matching of the adjacent crystal lattices. .... of crystals and that they have very interesting physical properties.
If you have a crystal (we'll come back to that phrase) you can pass X-rays through it and see the arrangement of spots that its crystal lattice has scattered .... He found a way to keep crystals from forming in electron microscopy ...
This provides a direct route for solving new X-ray crystal structures of ... where millions of molecules have to arrange in a well-defined lattice.
crystals containing dislocations sources (loops) are subjected to uniaxial ... "We can see the crystal lattice in all details and how it changes ...
"They started with a known crystal lattice, in this case, a diamond, and substituted every carbon atom with an aluminum tetrahedron.".
In this diagram, the atomic lattice of a crystal of barium oxide is depicted, ... in electrically stimulated defective crystals," says Cesare Franchini, ...
The researchers from the UC Berkeley-managed Lawrence Berkeley National Laboratory have been using ultrafast laser pulses in studying the material's interactions among the electrons and with the crystal's atomic lattice in the time domain, which highlights the microscopic dynamics of quantum materials ...


 

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