342 citations · 1.1k across the 31 of their papers we have counts for
31 papers
Thermal effects on the lifetime of evaporating drops on fibers
Marie Corpart, Frédéric Restagno, François Boulogne
We present an experimental study on the evaporation of drops on fibers. More specifically, we focus on the droplet lifetime both in quiescent air and in an air flow of constant vel…
Lifetime of vertical giant soap films: role of the relative humidity and film dimensions
Marina Pasquet, François Boulogne, Frédéric Restagno +1
We consider the lifetime of rectangular vertical soap films and we explore the influence of relative humidity and both dimensions on the stability of large soap films, reaching hei…
Evaporation-induced temperature gradient in a foam column
François Boulogne, Emmanuelle Rio, Frédéric Restagno
Various parameters affect the foam stability: surface and bulk rheology of the solution, gravitational drainage, mechanical vibrations, bubble gas composition, and also evaporation…
Quasi-crystalline order in vibrated granular matter
Andrea Plati, Raphael Maire, Etienne Fayen +4
Quasi-crystals are aperiodic structures that present crystallographic properties which are not compatible with that of a single unit cell. Their revolutionary discovery in a metall…
Dynamics of bubbles spontaneously entering in a tube
Alexis Commereuc, Manon Marchand, Emmanuelle Rio +1
When an open tube of small diameter touches a bubble of a larger diameter, the bubble spontaneously shrinks and pushes a soap film in the tube. We characterize the dynamics for dif…
Coffee stain effect on a fibre from axisymmetric droplets
Marie Corpart, Frédéric Restagno, François Boulogne
The so-called coffee stain effect has been intensively studied over the past decades, but most of the studies are focused on sessile droplets. In this paper, we analyse the origin…
Measurement of the temperature decrease in evaporating soap films
François Boulogne, Frédéric Restagno, Emmanuelle Rio
Recent advances have demonstrated that evaporation can play a significant role on soap film stability, which is a key concern in many industrial areas but also for children playing…
Evaporation of liquid coating a fiber
Marie Corpart, Julien Dervaux, Christophe Poulard +2
We investigate theoretically and numerically the diffusion-limited evaporation of a liquid deposited on a fiber in two configurations: a sleeve and a axisymmetric barrel-shaped dro…
Drop freezing: fine detection of contaminants by measuring the tip angle
François Boulogne, Anniina Salonen
In this Letter, we show that the shape of a freezing drop of water can be sensitive to the presence of impurities. We measure the tip angle of water drops frozen on a cold plate. T…
Roughness-induced friction in liquid foams
Manon Marchand, Frédéric Restagno, Emmanuelle Rio +1
Complex liquids flow is known to be drastically affected by the roughness condition at the interfaces. We combined stresses measurements and observations of the flow during the mot…
Cheap and versatile humidity regulator for environmentally controlled experiments
F. Boulogne
The control of environmental conditions is crucial in many experimental work across scientific domains. In this technical note, we present how to realize a cheap humidity regulator…
Influence of evaporation on soap film rupture
Lorène Champougny, Robin Henaff, Frédéric Restagno +2
Although soap films are prone to evaporate due to their large surface to volume ratio, the effect of evaporation on macroscopic film features has often been disregarded in the lite…
Convective evaporation of vertical films
François Boulogne, Benjamin Dollet
Motivated by the evaporation of soap films, which has a significant effect on their lifetime, we performed an experimental study on the evaporation of vertical surfaces with model…
Water-based peeling of thin hydrophobic films
Sepideh Khodaparast, François Boulogne, Christophe Poulard +1
Inks of permanent markers and water-proof cosmetics create elastic thin films upon application on a surface. Such adhesive materials are deliberately designed to exhibit water-repe…
Diffusiophoretic manipulation of particles in a drop deposited on a hydrogel
François Boulogne, Sangwoo Shin, Julien Dervaux +2
We report an experimental study on the manipulation of colloidal particles in a drop sitting on a hydrogel. The manipulation is achieved by diffusiophoresis, which describes a dire…
Protocol to perform pressurized blister tests on thin elastic films
François Boulogne, Sepideh Khodaparast, Christophe Poulard +1
This work aims to identify common challenges in the preparation of the blister test devices designed for measurement of energy release rate for brittle thin films and to propose ea…
Withdrawing a solid from a bath: how much liquid is coated?
Emmanuelle Rio, François Boulogne
A solid withdrawn from a liquid bath entrains a film. In this review, after recalling the predictions and results for pure Newtonian liquids coated on simple solids, we analyze the…
Coffee-stain growth dynamics on dry and wet surfaces
François Boulogne, François Ingremeau, Howard A. Stone
The drying of a drop containing particles often results in the accumulation of the particles at the contact line. In this work, we investigate the drying of an aqueous colloidal dr…
Drop morphologies on flexible fibers: influence of elastocapillary effects
Alban Sauret, Francois Boulogne, Katarzyna Somszor +2
Various materials are made of long thin fibers that are randomly oriented to form a complex network in which drops of wetting liquid tend to accumulate at the nodes. The capillary…
Tuning the receding contact angle on hydrogels by addition of particles
François Boulogne, François Ingremeau, Laurent Limat +1
Control of the swelling, chemical functionalization, and adhesivity of hydrogels are finding new applications in a wide range of material systems. We investigate experimentally the…
Effect of the polydispersity of a colloidal drop on the drying induced stress as measured by the buckling of a floating sheet
François Boulogne, Yong Lin Kong, Janine K. Nunes +1
We study the stress developed during the drying of a colloidal drop of silica nanoparticles. In particular, we use the wrinkling instability of a thin floating sheet to measure the…
Controlled uniform coating from the interplay of Marangoni flows and surface-adsorbed macromolecules
Hyoungsoo Kim, François Boulogne, Eujin Um +3
Surface coatings and patterning technologies are essential for various physicochemical applications. In this Letter, we describe key parameters to achieve uniform particle coatings…
Solid Capillarity: When and How does Surface Tension Deform Soft Solids?
Bruno Andreotti, Oliver Baeumchen, Francois Boulogne +6
Soft solids differ from stiff solids in an important way: their surface stresses can drive large deformations. Based on a topical workshop held in the Lorentz Center in Leiden, thi…
Homogeneous deposition of particles by absorption on hydrogels
François Boulogne, François Ingremeau, Julien Dervaux +2
When a drop containing colloidal particles evaporates on a surface, a circular stain made of these particles is often observed due to an internal flow toward the contact line. To h…