• 2465 Citations

Research output per year

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Personal profile


“Insight into even the most complex materials or problems can often come from surprisingly simple experiments.”

Research profile

Hans Wyss is assistant professor in microfluidics and soft matter in the Department of Mechanical Engineering at Eindhoven University of Technology (TU/e). Hans’ group studies materials that are structured at the meso-scale - larger than molecules but smaller than macroscopic objects. The group develops and uses simple tools, often based on microfluidics technology, for studying the mechanics, dynamics and structure of complex soft materials.

Examples of materials studied include colloidal suspensions and gels, emulsions, foams, biological systems, and polymers. Their rich phase behavior is one reason why they can be encountered in a wide range of applications; at the same time they hold a tremendous potential for studying fundamental scientific questions that are relevant to the behavior of all materials. A key expertise of the group is the measurement of mechanical properties of soft materials at small length scales. Further focus points are the study of the mechanics and dynamics of microgel particles, and the study of phoretic forces acting on colloidal particles, which the group has recently shown to be responsible for the previously unexplained “exclusion-zone” effect, an intriguing long-range repulsion of colloidal particles from a solid surface. More information on Hans’ research activities can be found on his research website, http://www.mate.tue.nl/~wyss.

Academic background

Hans Wyss received his PhD (dr. sc. nat.) from the Materials Department at ETH Zurich, Switzerland, where he worked on ceramic suspensions and gels. In his undergraduate education he studied experimental physics at the Physics Department of ETH Zurich. Before joining TU/e in 2009, Hans worked as a postdoctoral researcher in the Experimental Soft Matter group at Harvard University. He is a core member of the Institute for Complex Molecular Systems (ICMS) and regularly collaborates with other ICMS members, particularly on the study of responsive hydrogels and microgels. Outside TU/e, Hans regularly collaborates with a range of international groups from countries including the United Kingdom, Switzerland, Hong Kong, China, Korea, and the United States.

Affiliated with

  • Microsystems Group, Department of Mechanical Engineering, TU/e
  • Institute for Complex Molecular Systems (ICMS)
  • Materials Technology Group TU/e
  • Eindhoven Polymer Laboratories (EPL)

Partners in (semi-)industry

  • FrieslandCampina (Dutch dairy company, Wageningen, NL)
  • Wetsus (Industry-funded water research institute, Leeuwarden, NL)

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Research Output

Compression and reswelling of microgel particles after an osmotic shock

Sleeboom, J. J. F., Voudouris, P., Punter, M. T. J. J. M., Aangenendt, F. J., Florea, D., van der Schoot, P. P. A. M. & Wyss, H. M., 31 Aug 2017, In : Physical Review Letters. 119, 9, 5 p., 098001.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
  • 9 Citations (Scopus)
    79 Downloads (Pure)

    Long-range repulsion of colloids driven by ion-exchange and diffusiophoresis

    Florea, D., Musa, S., Huyghe, J. M. & Wyss, H. M., 2014, In : Proceedings of the National Academy of Sciences of the United States of America (PNAS). 111, 18, p. 6554-6559

    Research output: Contribution to journalArticleAcademicpeer-review

  • 53 Citations (Scopus)
    1 Downloads (Pure)

    Micromechanics of temperature sensitive microgels: Dip in poisson ratio near the LCST

    Voudouris, P., Florea, D., Schoot, van der, P. P. A. M. & Wyss, H. M., 2013, In : Soft Matter. 9, p. 7158-7166

    Research output: Contribution to journalArticleAcademicpeer-review

  • 28 Citations (Scopus)
    3 Downloads (Pure)

    Capillary micromechanics : measuring the elasticity of microscopic soft objects

    Wyss, H. M., Franke, T., Mele, E. & Weitz, D. A., 2010, In : Soft Matter. 6, 18, p. 4550-4555

    Research output: Contribution to journalArticleAcademicpeer-review

  • 69 Citations (Scopus)

    Soft colloids make strong glasses

    Mattsson, J., Wyss, H. M., Fernandez-Nieves, A., Miyazaki, K., Hu, Z., Reichman, D. R. & Weitz, D. A., 2009, In : Nature. 462, 7269, p. 83-86

    Research output: Contribution to journalArticleAcademicpeer-review

  • 343 Citations (Scopus)

    Student theses

    Benzene-1,3,5-tricarboxamide based supramolecular organogels: from molecular self-assembly to macroscopic properties

    Author: Haveman, J., 16 Oct 2014

    Supervisor: Palmans, A. (Supervisor 1), Wyss, H. (Supervisor 2), Voets, I. (Supervisor 2), Meijer, E. (Supervisor 2) & Meuldijk, J. (Supervisor 2)

    Student thesis: Master

    Engineering of supramolecular ureido-pyrimidinone polymers: fabrication of core-shell particles and creation of a scaffold for bioactivation after processing

    Author: Vranken, M., 31 Mar 2011

    Supervisor: Appel, W. (Supervisor 1), Wyss, H. (Supervisor 2), Meijer, E. (Supervisor 2) & Sijbesma, R. (Supervisor 2)

    Student thesis: Master

    Fabrication and testing of a microfluidic device for multi-cell analysis of mechanical properties of cells

    Author: Wijnands, S., 31 May 2013

    Supervisor: den Toonder, J. (Supervisor 1), Wyss, H. (Supervisor 2) & Ravetto, A. (Supervisor 2)

    Student thesis: Master


    Fragile material deposition by dynamic release layer-assisted laser induced forward transfer

    Author: Eggermont, J., 31 Oct 2012

    Supervisor: Dietzel, A. (Supervisor 1), van Steenhoven, A. (Supervisor 2), Mandamparambil, R. (Supervisor 2), Prenen, A. (External coach) & Wyss, H. (Supervisor 2)

    Student thesis: Master