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

An airbag for drops (PRL 108, 2012)

In a car accident airbags inflate on time scale of few milliseconds to slow down passengers in a comparably gentle manner before they hit the hard structure of the car or they prevent the impact altogether. Liquid drops impacting onto a solid surface, like rain drops hitting ground and inkjet drops hitting a print medium, experience a similar air-cushion effect that guarantees a soft landing, as Jolet de Ruiter and coworkers from Twente University report in the Physical Review Letters. ... read more


Researchers from the Physics of Complex Fluids Group are awarded an  STW Valorisation Grant for  exploring the commercialization of a “game changing” technique (eMALDI) for improving a workhorse method in analytical chemistry: Matrix assisted laser adsorption Ionization mass spectroscopy for short MALDI-MS. ... read more

Congratulations dr. Mishra!

On Friday, October 28th, Kartikeya Mishra successfully defended his PhD thesis entitled “Electrically tunable optofluidic lenses: fabrication and characterization”. In his thesis Kartikeya describes the possibilities to shape fluid lenses by applying electric fields. If you do that in the right way al kind of lens aberrations can be minimized or even completely suppressed. ... read more