UCLA Physicists Determine The Three-Dimensional Positions Of Individual Atoms For The First Time
Atoms are the building blocks of all matter on Earth, and the patterns in which they are arranged dictate how strong, conductive or flexible a material will be. Now, scientists at UCLA have used a pow...
Scientists Discover Atomic-Resolution Details Of Brain Signaling
Scientists have revealed never-before-seen details of how our brain sends rapid-fire messages between its cells. They mapped the 3-D atomic structure of a two-part protein complex that controls the re...
UCLA Physicists Determine The Three-Dimensional Positions Of Individual Atoms For The First Time
Atoms are the building blocks of all matter on Earth, and the patterns in which they are arranged dictate how strong, conductive or flexible a material will be. Now, scientists at UCLA have used a pow...
Surface extended X-ray absorption fine structure
Surface-extended X-ray absorption fine structure (SEXAFS)is the surface-sensitive equivalent of the EXAFS technique. This technique involves the illumination of the sample by high-intensity X-ray beam...
Racemic crystallography
Racemic protein crystallography is a recently developed technique of structural biology, in which crystals of a protein molecule are grown from a mixture of an ordinary chiral protein molecule and its...
X-ray scattering techniques
X-ray scattering techniques are a family of non-destructive analytical techniques which reveal information about the crystal structure, chemical composition, and physical properties of materials and t...
X-ray scattering techniques - Wikipedia
X-ray crystallography
X-ray crystallography is a tool used for identifying the atomic and molecular structure of a crystal, in which the crystalline atoms cause a beam of incident X-rays to diffract into many specific dire...
X-ray crystallography - Wikipedia
Metal K-edge
Metal K-edge spectroscopy is a spectroscopic technique used to study the electronic structures of transition metal atoms and complexes. This method measures X-ray absorption caused by the excitation o...
Reflection high-energy electron diffraction
Reflection high-energy electron diffraction (RHEED) is a technique used to characterize the surface of crystalline materials. RHEED systems gather information only from the surface layer of the sample...
Reflection high-energy electron diffraction - Wikipedia
Grazing-incidence small-angle scattering
Grazing-incidence small-angle scattering (GISAS) is a scattering technique used to study nanostructured surfaces and thin films. The scattered probe is either photons (Grazing-incidence small-angle X-...
Grazing-incidence small-angle scattering - Wikipedia
Polar point group
In geometry, a polar point group is a point group in which every symmetry operation leaves more than one point unmoved. Therefore, a point group with more than one axis of rotation or a mirror plane ...
X-ray absorption fine structure
X-ray absorption fine structure (XAFS) is a specific structure observed in X-ray absorption spectroscopy (XAS). By analyzing the XAFS, information can be acquired on the local structure and on the uno...
High energy X-rays
High-energy X-rays or HEX-rays are very hard X-rays, with typical energies of 80–1000 keV (1 MeV), about one order of magnitude higher than conventional X-rays (and well into gamma-ray energ...
High energy X-rays - Wikipedia
List of mineral tests
Mineral tests are several methods which can help identify the mineral type. This is used widely in mineralogy, hydrocarbon exploration and general mapping. There are over 3800 types of minerals known ...
Crystallography
Crystallography is the experimental science of determining the arrangement of atoms in the crystalline solids (see crystal structure). The word "crystallography" derives from the Greek words crystallo...
Crystallography - Wikipedia
Wulff construction
The Wulff construction is a method to determine the equilibrium shape of a droplet or crystal of fixed volume inside a separate phase (usually its saturated solution or vapor). Energy minimization arg...
Wulff construction - Wikipedia
Ultrafast x-rays
Ultrafast x-rays or ultrashort X-ray pulses are femtosecond x-ray pulses with wavelengths occurring at interatomic distances. This beam uses the X-ray's inherent abilities to interact at the level of ...
X-ray absorption spectroscopy
X-ray absorption spectroscopy (XAS) is a widely used technique for determining the local geometric and/or electronic structure of matter. The experiment is usually performed at synchrotron radiation s...
X-ray absorption spectroscopy - Wikipedia
Ligand K-edge
Ligand K-edge spectroscopy is a spectroscopic technique used to study the electronic structures of metal-ligand complexes. This method measures X-ray absorption caused by the excitation of ligand 1s e...
Lely method
The Lely method or Lely process is a crystal growth technology the patent for which was filed in the Netherlands in 1954 and in the United States in 1955 by Jan Anthony Lely of Philips Electronics. T...
Space group
In mathematics and physics, a space group is the symmetry group of a configuration in space, usually in three dimensions. In three dimensions, there are 219 distinct types, or 230 if chiral copies are...
Momentum transfer
In particle physics, wave mechanics and optics, momentum transfer is the amount of momentum that one particle gives to another particle.In the simplest example of scattering of two colliding particles...
Synchrotron radiation
The electromagnetic radiation emitted when charged particles are accelerated radially () is called synchrotron radiation. It is produced in synchrotrons using bending magnets, undulators and/or wiggle...
Synchrotron radiation - Wikipedia
Space-time crystal
A space-time crystal or four-dimensional crystal is a theoretical structure periodic in time and space. It extends the idea of a crystal to four dimensions. The idea was proposed by Frank Wilczek in ...
Texture (crystalline)
In materials science, texture is the distribution of crystallographic orientations of a polycrystalline sample. A sample in which these orientations are fully random is said to have no texture. If t...
Texture (crystalline) - Wikipedia
Diffractometer
A diffractometer (pronunciation: di-"frak-'tä-m&-t&r) is a measuring instrument for analyzing the structure of a material from the scattering pattern produced when a beam of radiation or parti...
Diffractometer - Wikipedia
Hermann–Mauguin notation
In geometry, Hermann–Mauguin notation is used to represent the symmetry elements in point groups, plane groups and space groups. It is named after the German crystallographer Carl Hermann (who introdu...
Powder diffraction
Powder diffraction is a scientific technique using X-ray, neutron, or electron diffraction on powder or microcrystalline samples for structural characterization of materials.
Ideally, every possib...
Powder diffraction - Wikipedia