• De Rondom 70, Gemini-Zuid 3.127 (Building15)

    5612 AP Eindhoven

    Netherlands

  • P.O. Box 513, Department of Mechanical Engineering

    5600 MB Eindhoven

    Netherlands

Organization profile

Introduction / mission

Microfluidics and Soft Matter

 

We develop and use simple experimental tools - often based on microfluidic devices - for studying the physical mechanisms that govern the properties and behavior of soft materials. 

Highlighted phrase

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

Organisational profile

A particular focus of our activities is the measurement of mechanical properties of soft objects such as hydrogels, microgels, or biological cells. We are developing dedicated techniques for studying the viscoelastic response of microscopic soft objects, fluid transport in hydrogels and other porous materials, or swelling-deswelling processes in hydrogel materials.

Another important activity is the study of phoretic forces in colloidal suspensions, including our recent unraveling of the physical origins of so-called exclusion zone (EZ) formation, where colloidal particles in aqueous suspensions are observed to be repelled from certain surfaces over long distances. 

We are currently working on the development of new microfluidic devices that exploit this EZ formation effect. These systems could find use in applications such as separation/sorting of biological or synthetic colloidal objects, for anti-fouling in reverse osmosis and blue energy applications, and in water purification.

Further we work on the interplay between different phoretic forces, including diffusiophoresis (colloid migration in a salt gradient), diffusio-osmosis (fluid motion along a surface in a salt gradient), electrophoresis (colloid migration in an electric field), and electroosmosis (fluid motion along a surface in an electric field). We are envisaging applications in microfluidic sorting or in electronic paper displays.

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Profiles

Photo of Mohammad Khorsand Ahmadi

Mohammad Khorsand Ahmadi

Person: Prom. : doctoral candidate (PhD)

Photo of Hans M. Wyss

Hans M. Wyss

Person: UD : Assistant Professor

20012019
Photo of Jiajing Yang

Jiajing Yang, BSc

Person: Prom. : doctoral candidate (PhD)

Research Output 2002 2019

1 Citation (Scopus)

Effect of microchannel structure and fluid properties on non-inertial particle migration

Maitri, R. V., De, S., Koesen, S. P., Wyss, H. M., van der Schaaf, J., Kuipers, J. A. M., Padding, J. T. & Peters, E. A. J. F., 1 Jan 2019, In : Soft Matter. 15, 12, p. 2648-2656 9 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
microchannels
Microchannels
Fluids
fluids
Shear thinning
4 Citations (Scopus)

Effects of surfactant and urea on dynamics and viscoelastic properties of hydrophobically assembled supramolecular hydrogel

Mihajlovic, M., Wyss, H. M. & Sijbesma, R. P., 10 Jul 2018, In : Macromolecules. 51, 13, p. 4813-4820 8 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
Hydrogel
Hydrogels
Surface-Active Agents
Urea
Sodium Dodecyl Sulfate
4 Citations (Scopus)

Monodisperse micro-shell structured gelatin microparticles for temporary chemoembolization

Kim, B., Han, S. W., Choi, S-E., Yim, D., Kim, J-H., Wyss, H. M. & Kim, J. W., 4 Jan 2018, In : Biomacromolecules. 19, 2, p. 386-391

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
Gelatin
Microfluidics
Blood vessel prostheses
Degradation
Kinetics