Surface supersaturation on growing of crystal
نویسندگان
چکیده
منابع مشابه
Crystal Nucleation without Supersaturation.
Classical nucleation theory (CNT) has been extensively employed to interpret crystal nucleation phenomena and postulates the formation of an ordered crystalline nucleus directly from vapor or solution. Here, we provide the first experimental demonstration of a two-step mechanism that facilitates deposition of crystals on solid surfaces from vapor. Crucially, this occurs from saturated vapor wit...
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Although the effects of kinetics on crystal growth are well understood, the role of substrate curvature is not yet established. We studied rigid, two-dimensional colloidal crystals growing on spherical droplets to understand how the elastic stress induced by Gaussian curvature affects the growth pathway. In contrast to crystals grown on flat surfaces or compliant crystals on droplets, these cry...
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Consider faceting of a crystal surface caused by strongly anisotropic surface tension, driven by surface diffusion and accompanied by deposition (etching) due to fluxes normal to the surface. Nonlinear evolution equations describing the faceting of 1+1 and 2+1 crystal surfaces are studied analytically, by means of matched asymptotic expansions for small growth rates, and numerically otherwise. ...
متن کاملSurface Structures and the Crystal Habit of Growing Particles
A truncated single-crystal surface varies to a more stable two-dimensional array of atoms by raising the temperature. On the other hand, metal particles may grow via a two-dimensional precursor array of atoms. The (1 × 1) Au(111), Au(110), and Au(100) surfaces undergo reconstruction in electrolyte solutions at a certain negative electrode potential (vs. SCE). The icosahedral or decahedral Au pa...
متن کاملSurface Structures and the Crystal Habit of Growing Particles
A truncated single-crystal surface varies to a more stable two-dimensional array of atoms by raising the temperature. On the other hand, metal particles may grow via a two-dimensional precursor array of atoms. The (1 × 1) Au(111), Au(110), and Au(100) surfaces undergo reconstruction in electrolyte solutions at a certain negative electrode potential (vs. SCE). The icosahedral or decahedral Au pa...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 1993
ISSN: 0108-7673
DOI: 10.1107/s0108767378088820