Dynamics, Rheology and Critical Properties of Colloidal Fluid Mixtures : Molecular Dynamics Studies in Equilibrium and Under Shear

Jochen Zausch

ISBN 10: 3838106458 / ISBN 13: 9783838106458

Published by Südwestdeutscher Verlag Für Hochschulschriften AG Co. KG, 2009

About this Item

nach der Bestellung gedruckt Neuware - Printed after ordering - Liquids under the influence of external fields exhibit a wide range of intriguing phenomena that can be markedly different from the behaviour of a quiescent system. This work considers two different systems - a glassforming Yukawa system and a colloid-polymer mixture - by Molecular Dynamics computer simulations. The former consists of a 50-50 binary mixture of differently-sized, like-charged colloids interacting via a screened Coulomb (Yukawa) potential. Near the glass transition the influence of an external shear field is studied. In particular, the transition from elastic response to plastic flow is of interest. The obtained results are important for advancing new theoretical approaches in the framework of the mode-coupling theory of the glass transition. Furthermore, they suggest new experimental investigations on colloidal systems. As second system a colloid-polymer mixture is studied in the context of its behaviour near the critical point of phase separation. Based on the Asakura-Oosawa model a new effective model with soft interaction potentials is introduced and characterised in equilibrium. Finally its suitability for shear simulations is shown.

Seller Inventory # 9783838106458

Bibliographic Details

• Title: Dynamics, Rheology and Critical Properties of Colloidal Fluid Mixtures : Molecular Dynamics Studies in Equilibrium and Under Shear
• Publisher: Südwestdeutscher Verlag Für Hochschulschriften AG Co. KG
• Publication Date: 2009
• Language: English
• ISBN 10: 3838106458
• ISBN 13: 9783838106458
• Binding: Taschenbuch
• Condition: Neu
• Dimensions: 220W x 150H x 10D millimeters 220 millimeters width by 150 millimeters height by 10 millimeters depth
• Weight: 238 grams

About this title

Synopsis

Liquids under the influence of external fields exhibit a wide range of intriguing phenomena that can be markedly different from the behaviour of a quiescent system. This work considers two different systems - a glassforming Yukawa system and a colloid-polymer mixture - by Molecular Dynamics computer simulations. The former consists of a 50-50 binary mixture of differently-sized, like-charged colloids interacting via a screened Coulomb (Yukawa) potential. Near the glass transition the influence of an external shear field is studied. In particular, the transition from elastic response to plastic flow is of interest. The obtained results are important for advancing new theoretical approaches in the framework of the mode-coupling theory of the glass transition. Furthermore, they suggest new experimental investigations on colloidal systems. As second system a colloid-polymer mixture is studied in the context of its behaviour near the critical point of phase separation. Based on the Asakura-Oosawa model a new effective model with soft interaction potentials is introduced and characterised in equilibrium. Finally its suitability for shear simulations is shown.

About the Author

Dr. rer. nat. Jochen Zausch studied physics at the JohannesGutenberg University of Mainz. After he received his diploma in2005 he was working in the Condensed Matter Theory Group of Prof.Binder at the Institute of Physics and completed his dissertationin 2009.