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2018-03-31T02:22:09Z
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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