Physics of Complex Fluids Group

The PCF group performs experimental research focusing on the properties of liquids on scales ranging from a few nanometers to many micrometers. Our activities fall into the categories: i) nanofluidics, ii) (electro)wetting & microfluidics, iii) soft matter mechanics. We are mainly interested in fundamental physical mechanisms that may ultimately also break grounds for new technological applications in the future.

The PCF group is part of the MESA+ institute for Nanotechnology at the University of Twente.

Latest news

New (Chemical) Industrial Partnership Program (CH)IPP started

FOM, NWO/CW and BP started a new program on fundamental physical and chemical aspects of enhanced oil recovery under the coordination of Frieder Mugele. Building on an earlier bilateral collaboration between the PCF group and BP, this new consortium now combines academic researchers from Twente, the Radboud University (Nijmegen), the University of Utrecht, the AMOLF FOM institute, and the Lawrence Berkeley National Laboratory (Berkeley, USA). Expanding the consortium in this manner, the team will be able to address complex aspects related to the adsorption of ions and organic molecules to solid-liquid interfaces using complementary techniques such as Atomic Force Microscopy, x-ray surface diffraction, x-ray absorption spectroscopy, Raman spectroscopy, non-linear optical (sum frequency) spectroscopy as well as numerical simulations. The program has a volume beyond 3mioEUR with a duration of 5 years.
For more information: see ... read more

CFD model in OpenFOAM for electrowetting-driven two phase flow microfluidics

Ivo Roghair, formerly at PCF and now at Tu/e, and co-workers published a CFD model to described the dynamics of the motion of drops in the presence of electric fields in the journal Microfluidics Nanofluidics. The model solves the Navier Stokes equations and the Poisson equation to simultaneously capture the coupled dynamics of the oil-water fluid system and the electric charges using a volume-of-fluid method with front tracking. The model is implemented in the open access environment OpenFOAM and includes a specific model of contact line dynamics based on the Cox-Voinov approach. The functionality of the versatile code is demonstrated for the specific application of an electrowetting-based display pixel.
The work was carried out in collaboration with M. Musterd, M. Kreutzer, and C. Kleijn at the Technical University of Delft. The paper is freely accessible at ... read more

Jolet de Ruiter obtained a Rubicon grant from NWO

Congratulations, Jolet!
Former PCF PhD student Jolet de Ruiter obtained a Rubicon grant from NWO to continue her work as a Postdoc in the group of Prof. Kripa Varanasi at MIT in Boston. Jolet’s proposal entitled “Study of drop impact and freezing dynamics under icing conditions” was one of four successful Rubicon proposals in January 2015. Good luck with your work, Jolet! ... read more


April 10th – Presentation by J. Lyklema (Wageningen University): Overcharging by simple ions: observations and interpretations

We are glad to announce that J. Lyklema will give a presentation entitled Overcharging by simple ions: observations and interpretations.The presentation will be on April 10th at 13.30 in room ZH 286. Further details click here ... read more

Jolet de Ruiter obtained a Rubicon grant from NWO