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Control of the shell structural properties and cavity diameter of hollow magnesium fluoride particles.

ACS Appl Mater Interfaces. 2014 Mar 26;6(6):4418-27

Authors: Nandiyanto AB, Ogi T, Okuyama K

Abstract
Control of the shell structural properties [i.e., thickness (8-25 nm) and morphology (dense and raspberry)] and cavity diameter (100-350 nm) of hollow particles was investigated experimentally, and the results were qualitatively explained based on the available theory. We found that the selective deposition size and formation of the shell component on the surface of a core template played important roles in controlling the structure of the resulting shell. To achieve the selective deposition size and formation of the shell component, various process parameters (i.e., reaction temperature and charge, size, and composition of the core template and shell components) were tested. Magnesium fluoride (MgF2) and polystyrene spheres were used as models for shell and core components, respectively. MgF2 was selected because, to the best of our knowledge, the current reported approaches to date were limited to synthesis of MgF2 in film and particle forms only. Therefore, understanding how to control the formation of MgF2 with various structures (both the thickness and morphology) is a prospective for advanced lens synthesis and applications.

PMID: 24555959 [PubMed - indexed for MEDLINE]

http://www.ncbi.nlm.nih.gov/pubmed/24555959?dopt=Abstract = URL to article

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