Theoretical description of the dynamics of colloidal particles in flowing solvents near liquid-solid interfaces

• Antragsteller: Dr. Markus Rauscher
• Fachliche Zuordnung: Theoretische Physik der kondensierten Materie
• Förderung: Förderung von 2006 bis 2011
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 23815893

We study the dynamics of complex fluids in confined geometries (i.e., near walls or between two larger particles) in the framework of the dynamic density functional theory (DDFT). This non-equilibrium extension of the equilibrium density functional theory (DFT) allows to describe the collective dynamics of interacting Brownian particles at the microscopic level in terms of an evolution equation for the particle density. We will address issues related to the application of tracer particle based fluid velocimetry methods in the vicinity of walls, to boundary conditions for hydrodynamic equations describing the flow of suspensions in small channels, and to fluid structure mediated interactions among particles as well as between particles and walls (so-called depletion interactions). To this end, we extend the dynamic density functional theory to include the effect of solvent flow and hydrodynamic interactions between particles and walls.

• DFG-Verfahren: Schwerpunktprogramme
• Teilprojekt zu: SPP 1164: Nano- und Mikrofluidik: Von der molekularen Bewegung zur kontinuierlichen Strömung