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Use of atomic force microscopy for imaging the initial stage of the nucleation of calcium phosphate in Langmuir-Blodgett films of stearic acid

By Zhang YJ, He P, Xu XD and Li JH

Abstract

The nucleation of calcium phosphate on the substrate of steatic acid Langmuir-blodgett film at the initial stage was investigated by atomic force microscopy. Nano-dots, nano-wires and nano-islands were observed in sequence for the first time, reflecting the nucleation of calcium phosphate and the molecular arrangement of carboxylic layer. The nucleation rates perpendicular and parallel to the carboxylic terminal group were estimated from the height and diameter of the calcium phosphate crystals, respectively. And this stage was distinct from the late explosive grown stage, in which the change of the morphology was not obvious. The approaches based on this discovery would lead to the development of new strategies in the controlled synthesis of inorganic nano-phases and the assembly of organized composite and ceramic materials

Topics: SELF-ASSEMBLED MONOLAYER, GROWTH, HYDROXYAPATITE, CRYSTALLIZATION, NANOFIBERS, CRYSTALS, Development, Hydroxyapatite, Crystallization, Nanofibers, Crystals, 展开, Growth, Ontogeny, Alloy development, 增长性, Animal growth, hypertrophy, maturing, growth rate (animals), 羟基磷灰石, Calcium phosphate hydroxide, Hydroxylapatite, 结晶, crystallisation, amorphous-crystalline transformations, devitrification, nanofibres, Nanomesh, Crystallites
Year: 2004
DOI identifier: 10.1016/j.tsf.2004.06.153
OAI identifier: oai:ir.ciac.jl.cn:322003/15787
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