Size-dependent surface energies of nanocrystals

2019-08-01 07:09:46

energy ratio size surface dependent

责任者: Lu, H.M.;Jiang, Q. 单位: Dept. of Mat. Sci. and Engineering, Jilin University, Ministry of Education, Changchun 130025, China 来源出处: Journal of Physical Chemistry B,2004,108(18):5617-5619 摘要: A model for size-dependent surface energy of nanocrystals, free of any adjustable parameter, has been established based on a previous model for the size-dependent cohesive energy. The surface energy falls as the size of crystals decreases to several nanometers while the surface energy ratio between different facets is size-independent and is equal to the corresponding bulk ratio. The predictions agree with experimental or theoretical results for beryllium, magnesium, sodium, aluminum, and gold. 关键词: Nanostructured materials;Entropy;Crystalline materials;Energy transfer;Magnesium printing plates;Sodium compounds;Gold;Beryllium;Vapors;Vapor interface energy;Energy ratio;Low index surface