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- Plastic_crystal abstract "A plastic crystal is a crystal composed of weakly interacting molecules that possess some orientational or conformational degree of freedom. The name plastic crystal refers to the mechanical softness of such phases: they resemble waxes and are easily deformed. If the internal degree of freedom is molecular rotation, the name rotor phase is also used.If the internal degree of freedom freezes in a disordered way, an orientational glass is obtained.The orientational degree of freedom may be an almost free rotation, or it may be a jump diffusion between a restricted number of possible orientations, as was shown for carbon tetrabromide.The X-ray diffraction patterns of plastic crystals are characterized by strong diffuse intensity in addition to the sharp Bragg peaks. In a powder pattern this intensity appears to resemble an amorphous background as one would expect for a liquid, but for a single crystal the diffuse contribution reveals itself to be highly structured. The Bragg peaks can be used to determine an average structure but due to the large amount of disorder this is not very insightful. It is the structure of the diffuse scattering that reflects the details of the constrained disorder in the system. Recent advances in two-dimensional detection at synchrotron beam lines facilitate the study of such patterns.".
- Plastic_crystal wikiPageID "15181192".
- Plastic_crystal wikiPageRevisionID "550850891".
- Plastic_crystal hasPhotoCollection Plastic_crystal.
- Plastic_crystal subject Category:Crystals.
- Plastic_crystal subject Category:Physical_quantities.
- Plastic_crystal subject Category:Soft_matter.
- Plastic_crystal type Abstraction100002137.
- Plastic_crystal type Measure100033615.
- Plastic_crystal type PhysicalQuantities.
- Plastic_crystal comment "A plastic crystal is a crystal composed of weakly interacting molecules that possess some orientational or conformational degree of freedom. The name plastic crystal refers to the mechanical softness of such phases: they resemble waxes and are easily deformed.".
- Plastic_crystal label "Plastic crystal".
- Plastic_crystal label "柔粘性結晶".
- Plastic_crystal sameAs 柔粘性結晶.
- Plastic_crystal sameAs m.03hl12g.
- Plastic_crystal sameAs Q7202080.
- Plastic_crystal sameAs Q7202080.
- Plastic_crystal sameAs Plastic_crystal.
- Plastic_crystal wasDerivedFrom Plastic_crystal?oldid=550850891.
- Plastic_crystal isPrimaryTopicOf Plastic_crystal.