Award Abstract #0241133
Structure and Diffusive Motion in Confined Multi-component Colloid Suspensions

NSF Org:	CHE Division of Chemistry
Initial Amendment Date:	March 7, 2003
Latest Amendment Date:	February 10, 2005
Award Number:	0241133
Award Instrument:	Continuing grant
Program Manager:	Charles D. Pibel CHE Division of Chemistry MPS Directorate for Mathematical & Physical Sciences
Start Date:	March 15, 2003
Expires:	February 28, 2007 (Estimated)
Awarded Amount to Date:	$501400
Investigator(s):	Stuart Rice s-rice@uchicago.edu (Principal Investigator)
Sponsor:	University of Chicago 5801 South Ellis Avenue Chicago, IL 60637 773/702-8602
NSF Program(s):	STRUCTURE AND REACTIVITY
Field Application(s):	0000099 Other Applications NEC
Program Reference Code(s):	AMPP,9161,7202
Program Element Code(s):	1960

ABSTRACT

Stuart Rice is supported by a grant from the Experimental Physical Chemistry Program of the Chemistry Division to perform experimental and theoretical studies of the properties of quasi-two-dimensional systems. The systems studied are suspensions of uncharged monodisperse colloid particles in very thin cells. The proposed experimental studies are based on digital video microscopy measurements and image analysis, while the theoretical tools include computer simulations, statistical mechanics, and hydrodynamics. Particular questions to be addressed include 1) the influence of the interplay between the range and strength of the direct (non-hydrodynamic) colloid-colloid interaction and the scale of confinement on the structures of the phases that a dense colloid suspension can support; and 2) the effects of the interplay between the direct colloid-colloid interaction, the hydrodynamic interactions in the suspension, and the scale of confinement on the diffusive motion of pairs, triplets, etc., of colloid particles in a quasi-two-dimensional or quasi-one-dimensional environment.

The main thrust of this project is to understand the structural and dynamical features of confined colloid systems and the application of that knowledge to other systems. The studies will lead to a deeper understanding of the properties of liquid systems that, because they are constrained to two-dimensional motion, exhibit unique thermodynamic behavior. This work will also enhance insight about the self-organization of colloids, and hence the nature of cell membranes, and it may ultimately have important applications for nanotechnology and the control of microfluidic devices. In the course of these studies undergraduate and graduate students as well as postdoctoral researchers receive training in the use of state-of-the art experimental and theoretical techniques.

PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH

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Alice Sheu and Stuart A. Rice.  "Studies of the depletion interaction in a quasi-two-dimensional binary colloid mixture: Molecular dynamics simulations,"  Phys. Rev. E,  v.72,  2005,  p. 011407.

Bianxiao Cui, Binhua Lin and Stuart A. Rice.  "Anomalous behavior of the depletion potential in quasi-two-dimensional binary mixtures,"  Phys. Rev. E,  v.72,  2005,  p. 021402.

Bianxiao Cui, Binhua Lin and Stuart A. Rice.  "Structure and Phase Transitions in Confined Binary Colloid Mixtures,"  J. Chem. Phys.,  v.119,  2003,  p. 2386.

Bianxiao Cui, Binhua Lin, Sanjay Sharma and Stuart A. Rice.  "Equilibrium Structure and Effective Pair Interaction in a Quasi-One-Dimensional Colloid Liquid,"  J. Chem. Phys.,  v.116,  2002,  p. 3119.

Bianxiao Cui, Haim Diamant, Binhua Lin and Stuart A. Rice.  "Anomalous hydrodynamic interaction in a quasi-two-dimensional suspension,"  Physical Review Letters,  v.92,  2004,  p. 258301.

Binhua Lin, Mati Meron, Bianxiao Cui, Haim Diamant and Stuart A. Rice.  "From Random Walk to Single-File Diffusion,"  Physical Review Letters,  v.94,  2005,  p. 216001.

Derek Frydel and Stuart A. Rice.  "Depletion interaction in a quasi-two-dimensional colloid assembly,"  Phys. Rev. E,  v.71,  2005,  p. 041402.

Derek Frydel and Stuart A. Rice.  "Influence of polydispersity on the effective interaction in a quasi-two-dimensional Pseudo-one-component colloid fluid,"  Phys. Rev. E,  v.71,  2005,  p. 041403.

Derek Frydel and Stuart A. Rice.  "Phase Diagram of a Quasi-Two-Dimensional Colloid Assembly,"  Phys. Rev. E,  v.68,  2003,  p. 061405.

Haim Diamant, Bianxiao Cui, Binhua Lin and Stuart A. Rice.  "Hydrodynamic Intreactions in Quasi-Two-Dimensional Suspensions,"  J. Phys. Condensed Matter,  v.17,  2005,  p. S2787.

Haim Diamant, Bianxiao Cui, Binhua Lin and Stuart A. Rice.  "Correlated Particle Dynamics in Quasi-Two-Dimensional Suspensions,"  J. Phys. Condensed Matter,  v.17,  2005,  p. S4047.

Hau My Ho, Bianxiao Cui, Stephen Repel, Binhua Lin and Stuart A. Rice.  "Influence of a depletion interaction on dynamical heterogeneity in a dense quasi-two-dimensional colloid liquid,"  J. Chem. Phys.,  v.121,  2004,  p. 8627.

Lattice-Boltzmann Study of the Transition from Quasi-Two-Dimensional to Three Dimensional One Particle Hydrodynamics.  "Derek Frydel and Stuart A. Rice,"  Molecular Physics,  v.104,  2006,  p. 1283.

Ronen Zangi and Stuart A. Rice.  "Cooperative Dynamics in Two-dimensions,"  Phys. Rev. Letts,  v.92,  2004,  p. 035502.

Ronen Zangi and Stuart A. Rice.  "Freezing Transition and Correlated Motion in a Quasi-two-dimensional Colloid Suspension,"  Phys. Rev. E,  v.68,  2003,  p. 061508.

Ronen Zangi and Stuart A. Rice.  "The Effect of Gauche Molecular Conformations on the Phase Diagram of a Langmuir Monolayer,"  Langmuir,  v.19,  2003,  p. 5949.

Ronen Zangi and Stuart A. Rice.  "Instantaneous normal modes and cooperative dynamics in a quasi-two-dimensional system of particles,"  J. Phys. Chem. B,  v.108,  2004,  p. 6856.

Three-particle correlation functions of quasi-two-dimensional one component and binary suspensions.  "Hau My Ho, Binhua Lin and Stuart A. Rice,"  J. Chem. Phys.,  v.125,  2006,  p. 184715.

Xinliang Xu and Stuart A. Rice.  "Influence of hydrodynamic coupling on the density dependence of quasi-one-dimensional diffusion,"  J. Chem. Phys.,  v.122,  2005,  p. 000-1.

Xinliang Xu, Binhua Lin, Haim Diamant and Stuart A. Rice.  "Influence of Hydrodynamic Coupling on Pair Diffusion in a Quasi-One-Dimensional Colloid System,"  Physical Review Letters,  v.95,  2005,  p. 158301.


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