Liquids and Interfaces

This large team (>20 permanent faculty members, researchers or ingeneers +20 PhD students or postdocs) gathers around soft matter, and the properties of liquids and complex systems where interfaces are involved. Our research covers the dynamics of these materials over a wide range of scales, from nanometric to macroscopic, as well as the coupling mechanisms between those various levels (micro to macro approach). Our approach couple experiments and theory, and we developp both novel instruments and model systems. Typical experiments in the team involve coupling optical measurments (confocal microscopy, high-speed camera, spectroscopy, micro-PIV, FCS, particle tracking, etc.) to stimuli (drop impact, flow, pressure, humidity, voltage, temperature gradient, fracture opening, etc.). See more about our research.

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In the news
July 2025: PhD of Guillaume Duprez Congratulation to Guillaume who defended his PhD thesis entitled "Microrheolgy of dense active systems : from colloids to cells".
June 2025: CNRS Silver medal for Cécile Cottin-Bizonne Congratulation to Cécile who was awarded the CNRS silver medal, in particular for her work on the collective behaviour of active matter in our team. Click here for a portrait.
May 2025: Universal law for the dispersal of motile microorganisms in porous media Publication in Physical Review Letters by Tommaso Pietrangeli, Christophe Ybert, Cécile Cottin-Bizonne et François Detcheverry in collaboration with colleagues in Zurich. See more.
May 2025: HDR of Oriane Bohomme Congratulation to Oriane who defended her "Habilitation à Diriger des Rercherches" entitled "Probing liquid properties in bulk and at interfaces : opical and electrokinetical approaches".
February 2025: Collective oscillations in human crowds Publication in Nature by Nicolas Bain and colleagues in Lyon and Pamplona who have modeled crowd motion during the feria in Pamplona. See more.
February 2025: PhD of Maxime Fery Congratulation to Maxime who defended his PhD thesis entitled "Probing liquid structures by non linear optics: from concentrated electrolytes to confined liquids".
December 2024: PhD of Changwoo Bae Congratulation to Changwoo who defended his PhD thesis entitled "Nanofluidics with Soap Bubbles and Surfactants".
December 2024: PhD of Tommaso Pietrangeli Congratulation to Tommaso who defended his PhD thesis entitled "Bacterial Motion in Confinement: Optimal Strategies, Universal Dispersal and Magnetotactic Bacteria".
December 2024: PhD of Manon Bourgade Congratulation to Manon who defended her PhD thesis entitled "Penetration of hydrophilic yield stress fluids in hydrophobic fibrous media".
October 2024: PhD of Frédérick Caetano Congratulation to Frédérick who defended his PhD thesis entitled "Slippage of yield stress fluid: lubrication film".
October 2024: PhD of Camille Perret Congratulation to Camille who defended her PhD thesis entitled "Marangoni swimmer in external flows".
February 2024: How to steer active colloids up a vertical wall? Publication in Nature Communications by Adérito Fins-Carreira, Christophe Ybert, Mathieu Leocmach, Cécile Cottin-Bizonne and colleagues in Saarbruck who have investigated the active matter version of a classical capillary rise effect. See more.

In the news

July 2025: PhD of Guillaume Duprez

Congratulation to Guillaume who defended his PhD thesis entitled "Microrheolgy of dense active systems : from colloids to cells".

June 2025: CNRS Silver medal for Cécile Cottin-Bizonne

Congratulation to Cécile who was awarded the CNRS silver medal, in particular for her work on the collective behaviour of active matter in our team. Click here for a portrait.

May 2025: Universal law for the dispersal of motile microorganisms in porous media

Publication in Physical Review Letters by Tommaso Pietrangeli, Christophe Ybert, Cécile Cottin-Bizonne et François Detcheverry in collaboration with colleagues in Zurich. See more.

May 2025: HDR of Oriane Bohomme

Congratulation to Oriane who defended her "Habilitation à Diriger des Rercherches" entitled "Probing liquid properties in bulk and at interfaces : opical and electrokinetical approaches".

February 2025: Collective oscillations in human crowds

Publication in Nature by Nicolas Bain and colleagues in Lyon and Pamplona who have modeled crowd motion during the feria in Pamplona. See more.

February 2025: PhD of Maxime Fery

Congratulation to Maxime who defended his PhD thesis entitled "Probing liquid structures by non linear optics: from concentrated electrolytes to confined liquids".

December 2024: PhD of Changwoo Bae

Congratulation to Changwoo who defended his PhD thesis entitled "Nanofluidics with Soap Bubbles and Surfactants".

December 2024: PhD of Tommaso Pietrangeli

Congratulation to Tommaso who defended his PhD thesis entitled "Bacterial Motion in Confinement: Optimal Strategies, Universal Dispersal and Magnetotactic Bacteria".

December 2024: PhD of Manon Bourgade

Congratulation to Manon who defended her PhD thesis entitled "Penetration of hydrophilic yield stress fluids in hydrophobic fibrous media".

October 2024: PhD of Frédérick Caetano

Congratulation to Frédérick who defended his PhD thesis entitled "Slippage of yield stress fluid: lubrication film".

October 2024: PhD of Camille Perret

Congratulation to Camille who defended her PhD thesis entitled "Marangoni swimmer in external flows".

February 2024: How to steer active colloids up a vertical wall?

Publication in Nature Communications by Adérito Fins-Carreira, Christophe Ybert, Mathieu Leocmach, Cécile Cottin-Bizonne and colleagues in Saarbruck who have investigated the active matter version of a classical capillary rise effect. See more.