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Wette, Patrick und Engelbrecht, Andreas und Salh, Roushdey und Klassen, Ina und Menke, Dirk und Herlach, Dieter M. und Roth, Stephan V. und Schöpe, Hans Joachim (2009) Competition between heterogeneous and homogeneous nucleation near a flat wall. Journal of Physics - Condensed Matter (21), 464115-(10 pp). ISSN 0953-8984.
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Kurzfassung
We studied the competition between heterogeneous and homogeneous nucleation of an aqueous suspension of charged colloidal spheres close to the container walls. Samples of equilibrium crystalline structure were shear-melted and the metastable melt left to solidify after the cessation of shear. The crystallization kinetics was monitored using time-resolved scattering techniques: at low particle number densities n we applied an improved static light scattering method while at large particle concentrations ultra-small-angle x-ray scattering was applied for the first time. Our results show some unexpected behavior: the heterogeneous nucleation at the container walls is delayed in comparison to the homogeneous bulk nucleation and its rate density appears surprisingly slightly smaller, demonstrating the complexity of the observed crystallization process.
| elib-URL des Eintrags: | https://elib.dlr.de/61155/ | ||||||||||||||||||||||||||||||||||||
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| Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||||||||||
| Titel: | Competition between heterogeneous and homogeneous nucleation near a flat wall | ||||||||||||||||||||||||||||||||||||
| Autoren: |
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| Datum: | 2009 | ||||||||||||||||||||||||||||||||||||
| Erschienen in: | Journal of Physics - Condensed Matter | ||||||||||||||||||||||||||||||||||||
| Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||||||
| Open Access: | Nein | ||||||||||||||||||||||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||||||
| In SCOPUS: | Nein | ||||||||||||||||||||||||||||||||||||
| In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||||||||||
| Seitenbereich: | 464115-(10 pp) | ||||||||||||||||||||||||||||||||||||
| ISSN: | 0953-8984 | ||||||||||||||||||||||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||||||||||||||||||||||
| Stichwörter: | nucleation | ||||||||||||||||||||||||||||||||||||
| HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||||||||||||||||||||||||||||||
| HGF - Programm: | Weltraum (alt) | ||||||||||||||||||||||||||||||||||||
| HGF - Programmthema: | W FR - Forschung unter Weltraumbedingungen (alt) | ||||||||||||||||||||||||||||||||||||
| DLR - Schwerpunkt: | Weltraum | ||||||||||||||||||||||||||||||||||||
| DLR - Forschungsgebiet: | W FR - Forschung unter Weltraumbedingungen | ||||||||||||||||||||||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | W - Vorhaben Materialwissenschaftliche Forschung (alt) | ||||||||||||||||||||||||||||||||||||
| Standort: | Köln-Porz | ||||||||||||||||||||||||||||||||||||
| Institute & Einrichtungen: | Institut für Materialphysik im Weltraum | ||||||||||||||||||||||||||||||||||||
| Hinterlegt von: | Parpart, Ingeborg | ||||||||||||||||||||||||||||||||||||
| Hinterlegt am: | 26 Nov 2009 08:45 | ||||||||||||||||||||||||||||||||||||
| Letzte Änderung: | 07 Feb 2013 19:27 |
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