Physics of Complex Fluids Group

The research goal of PCF is to understand and to control liquids and their interfaces from molecular to macroscopic scales. Our research connects fundamental phenomena in static and dynamic wetting, nanofluidics, microfluidic two-phase flow, functional surfaces, drop impact, and drop evaporation to practically relevant applications such as enhanced oil recovery, lab-on-a-chip systems, analytical chemistry (MALDI-MS), optofluidics, and inkjet printing.

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Experimental methods and tools: electrowetting, high resolution Atomic Force Microscopy and spectroscopy, (high speed) video microscopy, contact angle goniometry, particle tracking microrheology, macroscopic rheometry, (imaging) ellipsometry, quartz crystal microbalance, Langmuir trough and Langmuir-Blodgett deposition.

Latest news

Numerical simulations of Nicolao Lima just appeared in the journal Optics Express

In this article, we describe the novel concept of an electrostatically tunable adaptive liquid microlens with 100 individually addressable electrodes that generate an (almost) arbitrary distribution of electrical stresses on the liquid surface. This approach turns out to be very flexible and allows to address specific types aberrations (spherical, cylindrical, coma) individually by choosing appropriate excitation patterns of the electrodes. The numerical implementation of the model enables a systematic parameter study to optimize the excitation patterns and – if combined with a feedback mechanism – should allow for online wavefront shaping. ... read more

Colloquium by Dr. Johannes Lutzenkirchen

Special lecture: February 10, 10.00-11.00 hrs, ZH286.
Title: Some experimental values on various silica-titania systems - Coupled second harmonic generation and streaming potential measurements - Column experiments on Teflon to elucidate the role of hydroxide ions at inert interfaces
Speaker: Dr. Johannes Lützenkirchen, Karlsruher Institut für Technologie (KIT),
Institut für Nukleare Entsorgung – INE
E-Mail: johannes.luetzenkirchen(at)
Web: ... read more

Defense Naveen Kumar, February 9th

On February 9th, Naveen Kumar will defend his dissertation entitled: “Surface Charge characterization of solid-liquid interfaces using Atomic Force Microscopy”. You are all cordially invited at the Waaierbuilding, Prof.dr. G. Berckhoffzaal at 16.45 pm. ... read more

ECHOGRANT for Michel Duits

Success in the NWO-CW open competition on Excellent Chemical Research (ECHO)! A budget of 260 kEu for a PhD project was granted to Dr. Michel Duits (PI) and Prof. Stefan Luding from the Multi-Scale Mechanics group. The research will be aimed at understanding the effect of particle surface roughness on the dynamics of concentrated suspensions. ... read more