News tagged with crystal lattice
Flaky graphene makes reliable chemical sensors
Scientists from the University of Illinois at Urbana-Champaign and the company Dioxide Materials have demonstrated that randomly stacked graphene flakes can make an effective chemical sensor.
Nanotechnology / Nanomaterials
Jan 17, 2012 |
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Record conductivity achieved in strained lattice organic semiconductor
(PhysOrg.com) -- Organic semiconductors could usher in an era of foldable smartphones, better high-definition television screens and clothing made of materials that can harvest energy from the sun needed to ...
Dec 21, 2011 |
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New knowledge about 'flawed' diamonds could speed the development of diamond-based quantum computers
A University at Buffalo-led research team has established the presence of a dynamic Jahn-Teller effect in defective diamonds, a finding that will help advance the development of diamond-based systems in applications ...
Oct 11, 2011 |
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Scientists observe how superconducting nanowires lose resistance-free state
Even with today's invisibility cloaks, people can't walk through walls. But, when paired together, millions of electrons can.
Sep 22, 2011 |
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Spin pumping effect proven for the first time
German physicists led by Prof. Dr. Hartmut Zabel have demonstrated the spin pumping effect in magnetic layers for the first time experimentally. The behaviour of the spin pumping had previously only been predicted theoretically. ...
Sep 12, 2011 |
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Superconductivity's third side unmasked
The debate over the mechanism that causes superconductivity in a class of materials called the pnictides has been settled by a research team from Japan and China. Superconductivity was discovered in the pnictides ...
Jun 17, 2011 |
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Turning the heat on organizing energy
(PhysOrg.com) -- Conventional wisdom suggests that when exposing a crystal to heat, the thermal energy within the crystal would spread uniformly across the lattice.
Jun 15, 2011 |
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First telecommunications wavelength quantum dot laser on a silicon substrate
A new generation of high speed, silicon-based information technology has been brought a step closer by researchers in the Department of Electronic and Electrical Engineering at UCL and the London Centre for Nanotechnology. ...
Jun 13, 2011 |
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Neutron analysis explains dynamics behind best thermoelectric materials
Neutron analysis of the atomic dynamics behind thermal conductivity is helping scientists at the Department of Energy's Oak Ridge National Laboratory gain a deeper understanding of how thermoelectric materials ...
Jun 06, 2011 |
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Lasers used to form 3-D crystals made of nanoparticles (w/ video)
(PhysOrg.com) -- University of Michigan physicists used the electric fields generated by intersecting laser beams to trap and manipulate thousands of microscopic plastic spheres, thereby creating 3-D arrays of optically induced ...
Jun 01, 2011 |
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Looking inside nanomaterials in 3 dimensions
On May 13 2011, the journal Science published a paper where scientists from Risoe DTU (Denmark), in collaboration with scientists from China and the USA, report a new method for revealing a 3-D picture of the ...
May 16, 2011 |
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On the way to hydrogen storage?
(PhysOrg.com) -- The car of the future could be propelled by a fuel cell powered with hydrogen. But what will the fuel tank look like? Hydrogen gas is not only explosive but also very space-consuming. Storage ...
Apr 19, 2011 |
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Rare earths 'replaced' by silicon chip
Rare earths are an expensive and necessary component of strong permanent magnets. However, their use for this purpose can be optimised and thereby reduced. This has been demonstrated in computer simulations ...
Feb 28, 2011 |
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Experimental evidence adds to the likelihood of the existence of supersolids, an exotic phase of matter
Supersolids and superfluids rank among the most exotic of quantum mechanical phenomena. Superfluids can flow without any viscosity, and experience no friction as they flow along the walls of a container, because ...
Feb 18, 2011 |
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A mix of tiny gold and viral particles -- and the DNA ties that bind them
Scientists have created a diamond-like lattice composed of gold nanoparticles and viral particles, woven together and held in place by strands of DNA. The structure – a distinctive mix of hard, metallic ...
Nanotechnology / Nanomaterials
Jan 27, 2011 |
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Crystal structure
In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. A crystal structure is composed of a motif, a set of atoms arranged in a particular way, and a lattice. Motifs are located upon the points of a lattice, which is an array of points repeating periodically in three dimensions. The points can be thought of as forming identical tiny boxes, called unit cells, that fill the space of the lattice. 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 properties, such as cleavage, electronic band structure, and optical properties.
For more information about Crystal structure, read the full article at
Wikipedia.
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