- orientational order
- фтт. ориентационный порядок
The New English-Russian Dictionary of Radio-electronics. F.V Lisovsky . 2005.
orientational order
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Orientational glass — In solid state physics, an orientational glass is a molecular solid in which crystalline long range order coexists with quenched disorder in some rotational degree of freedom. An orientational glass is either obtained by quenching a plastic… … Wikipedia
Order and disorder (physics) — In physics, the terms order and disorder designate the presence or absence of some symmetry or correlation in a many particle system. In condensed matter physics, systems typically are ordered at low temperatures; upon heating, they undergo one… … Wikipedia
Liquid crystal — Schlieren texture of liquid crystal nematic phase Liquid crystals (LCs) are a state of matter that have properties between those of a conventional liquid and those of a solid crystal.[1] For instance, an LC may flow like a liquid, but its… … Wikipedia
Hexatic phase — The hexatic phase is a phase that is between the solid and the isotropic liquid phases. It is characterized by two order parameter: a short range positional and a quasi long range orientational (sixfold) order.The existence of the hexatic phase… … Wikipedia
Modified Bragg diffraction in quasicrystals — It is commonly assumed that diffraction in quasicrystals, whether of electrons, of x rays or of neutrons, is Bragg diffraction. Though there are similarities, notably scattering from atomic planes, there are also contrasting differences [ A.J.… … Wikipedia
Quasicrystal — Atomic model of an aluminum palladium manganese (Al Pd Mn) quasicrystal surface. Similar to Fig. 6 in Ref.[1] A quasiperiodic crystal, or, in short, quasicrystal, is a structure that is ordered but not periodic. A quasicrystalline pattern can… … Wikipedia
Lyotropic liquid crystal — A liquid crystalline material is called lyotropic if phases having long ranged orientational order are induced by the addition of a solvent. Historically the term was used to describe materials composed of amphiphilic molecules. Such molecules… … Wikipedia
Teorema de restricción cristalográfica — El teorema de restricción cristalográfica, en su forma básica, se basa en la observación de que las simetrías rotacionales de un cristal se limitan generalmente a los órdenes 2, 3, 4 y 6.[1] Sin embargo, en los cuasicristales se pueden presentar… … Wikipedia Español
quasicrystal — /kway zuy kris tl, kway suy , kwah see , zee /, n. a form of solid matter whose atoms are arranged like those of a crystal but assume patterns that do not exactly repeat themselves. [1985 90] * * * Introduction also called quasi periodic crystal … Universalium
Crystallographic restriction theorem — The crystallographic restriction theorem in its basic form was based on the observation that the rotational symmetries of a crystal are usually limited to 2 fold, 3 fold, 4 fold, and 6 fold. However, quasicrystals can occur with other symmetries … Wikipedia
Aperiodic tiling — are an aperiodic set of tiles, since they admit only non periodic tilings of the plane:] Any of the infinitely many tilings by the Penrose tiles is non periodic. More informally, many refer to the Penrose tilings as being aperiodic tilings , but… … Wikipedia
