Charged colloids and interfaces : interaction and phase behaviour

Mbamala, Emmanuel Chinedu

Charged colloids and interfaces : interaction and phase behaviour

Dateien

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Datum

2002

Autor:innen

Mbamala, Emmanuel Chinedu

URI (zitierfähiger Link)

http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-9841

Link zur Lizenz

Urheberrechtlich geschützt

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Titel in einer weiteren Sprache

Geladene Kolloide und Grenzflächen,Wechselwirkung und Phasenverhalten

Publikationstyp

Dissertation

Publikationsstatus

Published

Zusammenfassung

This thesis presents studies concerned with the effects on charged colloidal spherical particles (colloids or macroions) suspended in solutions of small ions (microions), due to the presence of interfacial substrates which often have different dielectric constants as that of the suspension. We consider mainly, interaction potentials of these colloids with the interfacial walls (wall colloid potentials) and also interactions among themselves (colloid colloid potentials) in the presence of one or more similar or dissimilar interfaces. We also investigate the structural and phase behaviour of these interfacial colloids, resulting from the interaction potentials. As tools for these studies, we work within the framework of Poisson-Boltzmann (PB) theories and Monte-Carlo (MC) simulations.

Zusammenfassung in einer weiteren Sprache

Die vorliegende Arbeit untersucht geladene, kugelförmige Teilchen (Kolloide oder Makroionen) in einer Suspension zusammen mit kleinen Ionen (Mikroionen). Diese Suspensionen grenzen an Substrate mit oftmals anderer Dielektrizitätskonstante als die der Suspension. Wir betrachten dabei hauptsächlich die Wechselwirkung der Kolloide mit der Grenzfläche (Wand-Kolloid-Potential) sowie die Wechselwirkung der Kolloide untereinander (Kolloid-Kolloid-Potential) in Anwesenheit von verschiedenen Grenzflächen. Ausgehend von diesen Wechselwirkungen untersuchen wir Struktur und Phasenverhalten von Kolloiden an einer Grenzfläche. Dazu benutzen wir die Poisson-Boltzmann-(PB)-Theorie und Monte-Carlo-Simulationen.

Fachgebiet (DDC)

530 Physik

Schlagwörter

Dielektrische Grenzflächen, Poisson-Boltzmann-Theorie, Phasenverhalten, Dielectric interfaces, Poisson-Boltzmann theory, Phase behaviour

Zitieren

ISO 690

MBAMALA, Emmanuel Chinedu, 2002. Charged colloids and interfaces : interaction and phase behaviour [Dissertation]. Konstanz: University of Konstanz

BibTex

@phdthesis{Mbamala2002Charg-9142,
  year={2002},
  title={Charged colloids and interfaces : interaction and phase behaviour},
  author={Mbamala, Emmanuel Chinedu},
  address={Konstanz},
  school={Universität Konstanz}
}

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Prüfungsdatum der Dissertation

February 20, 2003