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Elise Lorenceau

par Elise Lorenceau - publié le , mis à jour le

CNRS Researcher since 2004
Team : MODI
Office : 208 - Lab : 128

A summary of my research and teaching activities with a few images is presented below. For each subject, the names of the students appear in blue with a link to their PhD dissertation (usually only available in french unless specified otherwise).
An up to date publication list is available here or copied below (maybe less up to date...)

Feel free to contact me if you have any questions ! elise.lorenceau(at)univ-grenoble-alpes.fr

Job offer

Internship in collaboration with Saint-Gobain Recherche
http://www-liphy.ujf-grenoble.fr/Nucleation-et-croissance-de-bulles

Research : Flow in confined geometry with free interfaces

1) Impact and wetting of droplet
With C. Planchette, O. Pitois, A.L.Biance, A. Delbos et D. Quéré, G. Brenn
- Wetting and Impact of droplet on conical, cylindrical and inclined fibers
- Drop impact in a hole or in a pore
- Collisions of immiscible liquid drops

Two sequences of images illustrating the impact of a drop on a thin fibre (typically 500 microns in diameter). Depending on the relative distance between the drop center and the axis of the fiber, we either observe (bottom) centered impact where the droplet is sliced into two volumes of nearly equal size or an off-centered impact where the droplet is sliced into a big and a small volume. The small one is captured by the fiber. Thus the efficiency of the drop capture with a fiber critically depends on the geometry. More information in this article

2) Liquid flow within aqueous foams
With F. Rouyer, O. Pitois, R. Mensire (in english), K. Piroird, H.Stone
- Permeability of aqueous foams : influence of the liquid fraction, geometry, nodes
- Oil flow within the liquid matrix of aqueous foams : stability condition, dynamics of oil imbibition, coalescence of oil-laden foam, topological rearrangement in oil laden foams

A fluorescent oil drop initially sitting on a flat surface is connected to a dark dry foam from above. The oil invades the liquid framework of the foam revealing its architecture. The oil and the surface active agents have been selected with great care so that the oil is not an antifoaming agent of the foam. Image width 4 cm.
More information in this article , this one, also this one and that one
Credit K. Piroird

3) Highly monodisperse production of liquid objects at small scale with microfluidics
With B. Laborie (in english), D. Angelescu, F. Rouyer, H.Stone, D.Weitz, A. Utada
- Drops in drops
- Crystalline foams
- Polymerosome
- Yield stress fluid foam

Sequence of images showing the formation of a bubble in a step emulsification device. The thickness of the left part of the device is small (typically 6 µm). The white gaseous neck is highly confined and stable, while in the right part of the device, the thickness is in the order of 100 µm and the gaseous neck is unstable due to Rayleigh Plateau instability and breaks into bubbles. Moreover, the continuous phase is degazed and the bubbles are blown using CO2 (highly soluble in degazed water) and tiny volume fraction of fluorinated gas insoluble in the continuous phase. The bubbles therefore empty until there is nearly no CO2 left inside of them thus forming nanobubbles of insoluble gas.
More information in the article and in this one
Credit Dan E. Angelescu et R. Hohler

4) Mechanical properties of particle laden interfaces
With C. Planchette (in french), A.L. Biance, F. Rouyer, Y. Timounay (in french)
- Propagation of surface wave
- Bending modulus of bidisperse particle rafts
- Coalescence of armored interface under impact
- Opening and retraction of particulate soap films

Surface wave propagation at an air/liquid interface covered with particles ofdiameters 32 µm at a frequency f = 400 Hz. The vertical arrow indicates the oscillating plate and corresponds to 1 mm. More information in the article
Credit C. Planchette et A.L. Biance

Teaching : Part time professor in the Mechanical Engineering Department of Ecole Polytechnique

- Soft Matter Physics (with D. Quéré)
- Continuum Mechanics(with P. le Tallec)
- MEC 577 : Non-Newtonian fluids (with Y.Peysson)
- MEC 432 : Fluid Mechanics (with L. Jacquin)

Publications


B. Laborie, F. Rouyer, D. Angelescu, E. Lorenceau “Yield-stress fluid deposition in circular channels” Under review in the JFM (01/2016)

B. Laborie, F. Rouyer, D. Angelescu, E. Lorenceau “Yield-stress fluids foams : flow patterns and controlled production in T-junction and flow-focusing devices” Soft Matter, 12, 9355 – 9363 (2016)

R. Mensire, J. S. Wexler, A. Guibaud, E. Lorenceau, H. A. Stone “Surfactant and aqueous foam-driven oil extraction from micropatterned surfaces” Langmuir DOI : 10.1021/acs.langmuir.6b03225 (2016)

B. Laborie, F. Rouyer, D. Angelescu, E. Lorenceau “On the stability of the production of bubble in Yield-stress Fluid using Flow-focusing and T-junction devices” Physics of fluids 28, 063103 (2016)

P. Petit, A.L. Biance, E. Lorenceau, C. Planchette “Bending modulus of bidisperse particle rafts : local and collective contributions” Physical Review E, 93, 042802 (2016)

R. Mensire, J.T. Ault, E. Lorenceau and H.A. Stone "Point-source imbibition into dry aqueous foams" EPL, 113, 44002 (2016)

R. Mensire, K. Piroird, E. Lorenceau, “Capillary imbibition of aqueous foams by miscible and non-miscible liquids” Physical Review E, 92, 053014 (2015)

Y. Timounay, E. Lorenceau and F. Rouyer "Opening and retraction of particulate soap films", Europhysics Letters, 111, 26001 (2015)

B. Laborie, F. Rouyer, D. E. Angelescu, and E. Lorenceau " Bubble Formation in Yield Stress Fluids Using Flow-Focusing and T-Junction Devices ", Physical Review Letters, 114, 204501 (2015)

R. Mensire, K. Piroird, E. Lorenceau, “Coalescence of dry foam under water injection” Soft Matter, 10, 7068 (2014)

K. Piroird, E. Lorenceau, A.L. Biance “Oil repartition in a foam film architecture” Soft Matter, 10, 7061 (2014)

K. Piroird, E. Lorenceau "Capillary flow of oil in a single foam microchannel", Physical Review Letters, 111, 234503 (2013)

C. Planchette, A.-L. Biance, O. Pitois, and E. Lorenceau "Coalescence of armored interface under impact", Physics of Fluids, 25, 042104 (2013)

B. Laborie, F. Lachaussée, E. Lorenceau and F. Rouyer “How coatings with hydrophobic particles may change the drying of water droplets : incompressible surface versus porous media effects”, Soft Matter, 9, 4822 (2013)

Y. Yip Cheung Sang, E. Lorenceau, S. Wahl, M. Stoffel, D. E. Angelescu and R. Höhler “A microfluidic technique for generating monodisperse submicron-sized drops”, RSC Advances, 3, 2330 (2013)

M. Stoffel, S. Wahl, E. Lorenceau, R. Höhler, B. Mercier, and D.E. Angelescu “Bubble production mechanism in a microfluidic foam generator”, Physical Review Letters, 108, 198302 (2012)

C. Planchette, E. Lorenceau, G. Brenn “The onset of fragmentation in binary liquid drop collisions”, Journal of Fluid Mechanics 702, 5 (2012)

C. Planchette, E. Lorenceau, A.L. Biance “Surface wave on a particle raft” Soft Matter, 8, 2444 (2012)

I.V. Roisman, C. Planchette, E. Lorenceau, G. Brenn, “Binary collisions of drops of immiscible” Journal of Fluid Mechanics, 690, 512 (2012)

C. Planchette, A.L. Biance E. Lorenceau, “Transition of liquid marble impacts onto solid surfaces” Europhysics Letters, 97, 14003 (2012)

C. Planchette, E. Lorenceau, G. Brenn, “Binary collisions of immiscible liquid drops for liquid encapsulation” Fluid Dynamics and Material Processing 7, 279 (2011)

F. Rouyer, O. Pitois, E. Lorenceau, and N. Louvet “Permeability of a bubble assembly : From the very dry to the wet limit" Physics of Fluids 22, 043302 (2010)

C. Planchette, E. Lorenceau and G. Brenn, “Liquid encapsulation by binary collisions of immiscible liquid drops” Colloid and Surfaces A 365, 89 (2010).

A. Delbos, E. Lorenceau and O. Pitois “Forced impregnation of a capillary tube with drop impact” Journal of Colloid and Science 341, 171 (2010).

K. Piroird, C. Clanet, E. Lorenceau and D. Quéré “Drops impacting inclined fibers” Journal of Colloid and Science 334, 70 (2009).

E. Lorenceau, N. Louvet, F. Rouyer and O. Pitois “Permeability of aqueous foams” European Physical Journal – E 28, 293 (2009).

E. Lorenceau, C. Clanet, D. Quéré and M.Adler “Off-centre impact on a horizontal fibre” European Physical Journal - ST 166, 3 (2009).

O. Pitois, E. Lorenceau, N. Louvet and F. Rouyer “Specific Surface Area Model for Foam Permeability” Langmuir 25, 97 (2009).

E. Reyssat, E. Lorenceau, F. Restagno and D. Quéré " Viscous jet drawing air into a bath" Physics of Fluids 20 091107 (2008)

F. Rouyer, E. Lorenceau and O. Pitois, “Film Junction Effect on Foam Drainage” Colloid and Surfaces A 324, 234-236 (2008).

O. Pitois, N. Louvet, E. Lorenceau and F. Rouyer, “Node contribution to the permeability of liquid foams” Journal of Colloid and Interface Science 322, 675-677 (2008).

R. Höhler, E. Lorenceau, Y. Yip Cheung Sang, and S. Cohen-Addad “Osmotic Pressure and Structures of Monodisperse Ordered Foam” Langmuir 24, 418 (2008).

E. Lorenceau, Y. Yip Cheung Sang, R. Höhler and S. Cohen-Addad “A high rate flow-focusing foam generator” Physics of Fluids. 18, 097103 (2006).

E. Lorenceau, A. S. Utada, D. R. Link, G. Cristobal, M. Joanicot and D. A. Weitz,,“ Generation of Polymerosomes from Double-Emulsions” Langmuir 21, 9183 (2005) PDF

A. S. Utada, E. Lorenceau, D. R. Link, P. D. Kaplan, H. A. Stone and D. A. Weitz,,“Monodisperse Double Emulsions Generated from a Microcapillary Device” Science 308, 537 (2005) PDF

E. Lorenceau, J. Eggers and D. Quéré, “Air entrainment by a viscous jet plunging into a bath” Physical Review Letters, 93, 254501 (2004) PDF

E. Lorenceau, C. Clanet and D. Quéré,”Capturing drops with a thin fiber” Journal of Colloid and Interface Science, 279, 102 (2004) PDF

E. Lorenceau and D. Quéré, “Drops on a conical fiber”Journal of Fluid Mechanics, 510, 29 (2004) PDF

E. Lorenceau, F. Restagno and D. Quéré “Fracture of a viscous fluid” Physical Review Letters, 90,184501 (2003) PDF

E. Lorenceau and D. Quéré, “Drops impacting a sieve”, Journal of Colloid and Interface Science, 263, 244 (2003) PDF

E. Lorenceau, D. Quéré, J.Y. Ollitrault and C. Clanet, “Gravitational oscillations of a liquid column in a pipe”, Physics of Fluids, 14, 1985 (2002) PDF