François Boulogne

CNRS researcher, HDR

CNRS, Laboratoire de Physique des Solides (LPS), Paris-Saclay University

Afffiliated to EDPIF

Biography

My research activities fall under the umbrella of a common theme, phase transitions in soft matter. More precisely, my topics focus on the role of solid surface roughness in shear thinning of foams; liquid evaporation in fibrous materials and under forced convection; and solidification where the morphology is governed by physical chemistry.

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Interests

Evaporation and drying
Foams
Freezing
Complex fluid flows

Education

PhD in Soft Matter, 2013

Université Pierre et Marie Curie
Accreditation to direct research (HDR), 2020

Université Paris-Saclay

Research Topics

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Last Publications

M. Corpart, F. Restagno, F. Boulogne (2023). Coffee stain effect on a fibre from axisymmetric droplets. Journal of Fluid Mechanics.

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F. Boulogne, F. Restagno, E. Rio (2022). Measurement of the temperature decrease in evaporating soap films. Physical Review Letters.

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M. Corpart, J. Dervaux, C. Poulard, F. Restagno, F. Boulogne (2022). Evaporation of liquid coating a fiber. EPL.

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Experience

Full time researcher, CNRS

Soft Matter at interfaces group, LPS

Jan 2017 – Present Orsay, France

I joined the group Soft matter at interfaces in Laboratoire de Physique des Solides in Orsay. At this occasion, I launched new activities related to the role of physical solid surface properties on foam flows. I am also developing new topics related to phase transitions in soft matter.

Marie Curie fellow

Paris-Diderot University

Jun 2016 – Jan 2017 Paris, France

During my short stay in Laurent Limat’s group, I finalized collaborative works on the particle transport in drops by diffusiophoresis.

Marie Curie fellow

Princeton University

Aug 2013 – Jun 2016 Princeton, NJ

I spent nearly 3 years in Howard Stone’s group In Princeton. My primarily work was on the drying of colloidal suspensions with a particular focus on the drying stress measurement and the role of solvent absorption by the substrate. I also made experimental studies on the wetting of fibers and the damping of a sloshing motion by foams.

Skills

Experimental science

Python programming language

Image Processing

Teaching

Image processing in Python with scikit-image

EDPIF Jan 2017 – Aug 2023

Two days lecture for PhD students from EDPIF.

Production of scientific images is ubiquitous in many scientific disciplines as they can capture phenomena in a broad range of lengthscales, from the stars to the atom. Therefore, skills in image processing can be advantageous to perform and automate image analysis. This lecture will have a tutorial/workshop format and will mainly focus on the library scikit-image. This course starts from the basics of image processing and opens on cutting edge techniques.

Publications

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M. Corpart, F. Restagno, F. Boulogne (2023). Coffee stain effect on a fibre from axisymmetric droplets. Journal of Fluid Mechanics.

Cite ArXiv HAL DOI

F. Boulogne, F. Restagno, E. Rio (2022). Measurement of the temperature decrease in evaporating soap films. Physical Review Letters.

Cite ArXiv HAL DOI

M. Corpart, J. Dervaux, C. Poulard, F. Restagno, F. Boulogne (2022). Evaporation of liquid coating a fiber. EPL.

Cite ArXiv HAL DOI

M. Pasquet, F. Boulogne, J. Saint-Anna, F. Restagno, E. Rio (2022). Impact of physical-chemistry on the film thinning in surface bubbles. Soft Matter.

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F. Boulogne, A. Salonen (2020). Drop freezing: fine detection of contaminants by measuring the tip angle. Applied Physics Letters.

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