surface vacancy

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• Vacancy (chemistry) — In crystallography, a vacancy is a type of point defect in a crystal. Crystals inherently possess imperfections, often referred to as crystalline defects . A defect wherein an atom, such as silicon, is missing from one of the lattice sites is… …   Wikipedia

• vacancy — /vay keuhn see/, n., pl. vacancies. 1. the state of being vacant; emptiness. 2. a vacant, empty, or unoccupied place, as untenanted lodgings or offices: This building still has no vacancies. 3. a gap; opening; breach. 4. an unoccupied position or …   Universalium

• Adatoms — An adatom is an atom that lies on a crystal surface, and can be thought of as the opposite of a surface vacancy. This term is used in surface chemistry, when describing single atoms lying on surfaces and surface roughness. The word is a… …   Wikipedia

• crystal — crystallike, adj. /kris tl/, n., adj., v., crystaled, crystaling or (esp. Brit.) crystalled, crystalling. n. 1. a clear, transparent mineral or glass resembling ice. 2. the transparent form of crystallized quartz. 3. Chem., Mineral. a solid body… …   Universalium

• Crystal — /kris tl/, n. 1. a city in SE Minnesota, near Minneapolis. 25,543. 2. a female given name. * * * I Any solid material whose atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Each of a crystal s… …   Universalium

• Dislocation — For the syntactic operation, see Dislocation (syntax). For the medical term, see Joint dislocation. In materials science, a dislocation is a crystallographic defect, or irregularity, within a crystal structure. The presence of dislocations… …   Wikipedia

• Material properties of diamond — This article addresses the material properties of diamond. For a broader discussion of diamonds, see diamond. For other uses of the word diamond, see diamond (disambiguation). Diamond An octahedral diamond crystal in matrix Gener …   Wikipedia

• radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

• analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… …   Universalium

• radiation measurement — ▪ technology Introduction       technique for detecting the intensity and characteristics of ionizing radiation, such as alpha, beta, and gamma rays or neutrons, for the purpose of measurement.       The term ionizing radiation refers to those… …   Universalium

• Silver bromide — chembox new OtherNames = bromargyrite bromyrite silver(I) bromide Section1 = Chembox Identifiers CASNo = 7785 23 1 Section2 = Chembox Properties Formula = AgBr MolarMass = 187.772 g/mol Appearance = Pale yellow solid photosensitive Density =… …   Wikipedia