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oai:ojs.www.eurjchem.com:article/1676 2018-03-31T02:22:09Z eurjchem:ART driver

Comparison of the observed size-dependent melting point of CdSe nanocrystals to theoretical predictions Dukes III, Albert Demaine Pitts, Christopher Dylan Kapingidza, Anyway Brenda Gardner, David Eric Layland, Ralph Charles CdSe Size effects Nanocrystals Phase transitions Electron microscopy Melting point depression Cadmium selenide nanocrystals were observed to have a size-dependent melting point which was depressed relative to the bulk melting temperature. The observed size-dependent melting point ranged from 500-1478 K, while a model based on the surface area to volume ratio predicted that is should range between 774-1250 K. The nanocrystals were heated in situ in the electron microscope, and the melting point was almost immediately followed by the vaporization of the CdSe nanocrystals, allowing for straightforward determination of the melting temperature. The differences between the observed melting point of CdSe nanocrystals and the values predicted by the surface area to volume ratio model indicates that additional factors are involved in the melting point depression of nanocrystals. Atlanta Publishing House LLC 2018-03-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/1676 10.5155/eurjchem.9.1.39-43.1676 European Journal of Chemistry; Vol. 9 No. 1 (2018): March 2018; 39-43 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/1676/pdf_1676 Copyright (c) 2018 Authors