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MESOSCOPIC STRUCTURE [2 records]

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Alphabetical list of terms

Record 1 2009-09-18

English

Subject field(s)
  • Rheology
  • Nuclear Fission Reactors
CONT

... three-dimensional dislocation dynamics(DD) [is used] to investigate plastic flow localization during deformation of irradiated materials. The DD model is a powerful tool for investigating the mechanical response of materials on a mesoscopic scale. In a DD simulation, the plastic deformation of a single crystal is obtained by explicit accounting of the dislocation evolution history, i. e., their motion and structure.

French

Domaine(s)
  • Rhéologie
  • Réacteurs nucléaires de fission
CONT

Aperçu sur les méthodes de modélisation [...] Les simulations de dynamique des dislocations (DD) sont utilisées pour prédire la loi de comportement cristalline nécessaire aux simulations mécaniques à l'échelle macroscopique. Le réseau de dislocations est décomposé en segments et la force sur chaque segment est calculée.

Spanish

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Record 2 1999-10-12

English

Subject field(s)
  • Chemistry
OBS

Since the mesoscopic structure of many forms of soft condensed matter strongly scatters visible light, they appear opaque. My current research takes advantage of this multiple light scattering property for noninvasive study of opaque materials such as foams, emulsions, colloidal suspensions, granular media, and biological tissues that are inaccessible to traditional measurement techniques. From the average intensity of diffusely transmitted light we can monitor details of the mesoscopic structure, while from fluctuations in the transmitted intensity we can monitor motion within the structure itself.

French

Domaine(s)
  • Chimie
CONT

[...] les structures mésoscopiques sont des "systèmes quantiques à n corps" : leur niveau de complexité est tel que les équations qui régissent habituellement la physique quantique ne suffisent pas à les décrire.

Spanish

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