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Extended Wulff Constructions
Extended Wulff constructions refers to a number of different ways to model the structure of nanoparticles as well as larger mineral crystals. They can be used to understand the shape of gemstones and Crystal twinning, crystals with twins, and in other areas such as understanding both the shape and how nanoparticles play a role in the commercial production of chemicals using Heterogeneous catalysis, heterogeneous catalysts. Extended Wulff constructions are variants of the Wulff construction, which is used for a solid single crystal in isolation. They include cases for solid particles on substrates, those with internal boundaries and also when growth is important. Depending upon whether there are twins or a substrate, there are different cases as indicated in the Extended Wulff constructions#Figure 1, decision tree figure. The simplest forms of these constructions yield the lowest Gibbs free energy (thermodynamic) shape, or the stable growth form for an isolated particle; it can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rostislaw Kaischew
Rostislaw Kaischew (; February 16, 1908 Old Style, O.S. (February 29, 1908 (New Style, N.S.)), Saint Petersburg, Russian Empire – November 19, 2002, Sofia, Republic of Bulgaria) was a Bulgarian physicochemist and a member of the Bulgarian Academy of Sciences. His most significant contributions to science were within studies of crystal growth and nucleation. Biography Kaischew graduated from Sofia University in 1930 and earned his doctorate at Technische Hochschule of Breslau, Germany in 1932. His doctoral adviser was Franz Simon. In 1933, he was appointed an assistant professor at Sofia University, and in 1947 - a professor. At the Bulgarian Academy of Sciences, Kaischew founded the Institute for Physical Chemistry, and held the position of director there from its creation in 1958 until his retirement in 1989. The Institute is named after him. Selected bibliography * * * * See also *Wulff construction References Further reading * * External links * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
