mismatch dislocation

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• Stranski-Krastanov growth — (SK growth, also Stransky Krastanov or Stranski Krastanow) is one of the three primary modes by which thin films grow epitaxially at a crystal surface or interface. Also known as layer plus island growth , the SK mode follows a two step process:… …   Wikipedia

• Grain boundary strengthening — (or Hall Petch strengthening) is a method of strengthening materials by changing their average crystallite (grain) size. It is based on the observation that grain boundaries impede dislocation movement and that the number of dislocations within a …   Wikipedia

• Strengthening mechanisms of materials — Methods have been devised to modify the yield strength, ductility, and toughness of both crystalline and amorphous materials. These strengthening mechanisms give engineers the ability to tailor the mechanical properties of materials to suit a… …   Wikipedia

• Work hardening — Work hardening, also known as strain hardening or cold working, is the strengthening of a metal by plastic deformation. This strengthening occurs because of dislocation movements within the crystal structure of the material.[1] Any material with… …   Wikipedia

• Pinning points — In a crystalline material, a dislocation is capable of traveling throughout the lattice when relatively small stresses are applied. This movement of dislocations results in the material plastically deforming. Pinning points in the material act to …   Wikipedia

• syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… …   Medical dictionary

• Indium gallium nitride — (InGaN, IndiumxGallium1 xNitrogen) is a semiconductor material made of a mix of gallium nitride (GaN) and indium nitride (InN). It is a ternary group III/group V direct bandgap semiconductor. Its band gap can be tuned by varying the amount of… …   Wikipedia

• Segregation in materials — refers to the enrichment of a material constituent at a free surface or an internal interface of a material. In a polycrystalline solid, a segregation site can be a dislocation, grain boundary, stacking fault, or an interface with a precipitate… …   Wikipedia

• Ceinture D'astéroïdes — Schéma du système solaire interne, jusqu à l orbite de Jupiter faisant apparaître les orbites des planètes internes et la position approximative du cœur de la ceinture d astéroïdes; les astéroïdes troyens sont également représentés. La ceinture d …   Wikipédia en Français

• Ceinture d'asteroides — Ceinture d astéroïdes Schéma du système solaire interne, jusqu à l orbite de Jupiter faisant apparaître les orbites des planètes internes et la position approximative du cœur de la ceinture d astéroïdes; les astéroïdes troyens sont également… …   Wikipédia en Français

• Ceinture d'astéroide — Ceinture d astéroïdes Schéma du système solaire interne, jusqu à l orbite de Jupiter faisant apparaître les orbites des planètes internes et la position approximative du cœur de la ceinture d astéroïdes; les astéroïdes troyens sont également… …   Wikipédia en Français