Paris-Saclay University


I am an experimental physicist working on interfacial flows and dynamics. In particular, I am interested in the stability of soapy objects like foam films, bubbles or foams. This includes flow at interfaces, dynamic interfaces and their mechanical properties, macscopic behaviour of soapy objects.


  • Foams, bubbles and soap films stability
  • Surface rheology
  • Thin film thinning, drainage and evaporation


  • PhD in Hydrodynamics, 2005, Paris 6 University
  • Accreditation to direct research (HDR), 2013, Paris Sud University

Professor in Paris Saclay University

Head of the track “Soft Matter and Biophysics” in the ICFP Master 2

Lecture in Complex Fluid and Interfaces in the Master 1 in fundamental physics

Lecture in Interfacial flows in the Master 2 DFE

Teaching about the scientific approach in the first year of physics licence

Surface bubbles

Rupture of foam films

Photography ©Serge Guichard

Soapy objects stability and surface rheology

Link between the mechanical properties of interfaces and the macroscopic properties of foam films, bubbles or foams.

Dynamic contact lines

Contact lines in presence of surface flows


PhD thesis

Accreditation to supervise research

Born, P., Braibanti, M., Cristofolini, L., Cohen-Addad, S., Durian, D. J., Egelhaaf, S. U., Escobedo-Sánchez, M. A., Höhler, R., Karapantsios, T. D., Langevin, D., Liggieri, L., Pasquet, M., Rio, E., Salonen, A., Schröter, M., Sperl, M., Sütterlin, R., & Zuccolotto-Bernez, A. B. (2021). Soft matter dynamics: A versatile microgravity platform to study dynamics in soft matter. Review of Scientific Instruments, 92(12), 124503.
Miguet, J., Pasquet, M., Rouyer, F., Fang, Y., & Rio, E. (2021). Marginal regeneration-induced drainage of surface bubbles. Physical Review Fluids, 6(10), L101601.
Hamlett, C. A. E., Boniface, D. N., Salonen, A., Rio, E., Perkins, C., Clark, A., Nyugen, S., & Fairhurst, D. J. (2021). Blowing big bubbles. Soft Matter, 17(9), 2404–2409.
Miguet, J., Rouyer, F., & Rio, E. (2021). The Life of a Surface Bubble. Molecules, 26(5), 1317.
Mariot, S., Pasquet, M., Klein, V., Restagno, F., & Rio, E. (2021). A new setup for giant soap films characterization. The European Physical Journal E, 44(4), 52.
Miguet, J., Pasquet, M., Rouyer, F., Fang, Y., & Rio, E. (2020). Stability of big surface bubbles: impact of evaporation and bubble size. Soft Matter, 16(4), 1082–1090.
Miguet, J., Fang, Y., Rouyer, F., & Rio, E. (2020). How does the presence of stevia glycosides impact surface bubbles stability? Colloids and Surfaces A: Physicochemical and Engineering Aspects, 603, 125093.
Marchand, M., Restagno, F., Rio, E., & Boulogne, F. (2020). Roughness-Induced Friction on Liquid Foams. Physical Review Letters, 124(11), 118003.
Forel, E., Dollet, B., Langevin, D., & Rio, E. (2019). Coalescence in Two-Dimensional Foams: A Purely Statistical Process Dependent on Film Area. Physical Review Letters, 122(8), 088002.
Forel, E., Langevin, D., & Rio, E. (2019). Measurement of film permeability in 2D foams. The European Physical Journal E, 42(6), 75.
Saulnier, L., Drenckhan, W., Larré, P.-E., Anglade, C., Langevin, D., Janiaud, E., & Rio, E. (2015). In situ measurement of the permeability of foam films using quasi-two-dimensional foams. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 473, 32–39.


Professor Paris Saclay University

Paris Saclay University

2020- Professor

2006-2020 Assistant Professor

2013 Accreditation to direct research (HDR),

DTU – Copenhagen

2005-2006 Post-doctoral fellow in the physics department of the Danish Technological University under the supervision of Tomas Bohr.

ESPCI – Paris

2002- 2005 PhD in the laboratory PMMH, ESPCI, Paris. Supervisor: Laurent Limat. Drops, puddles and dry arches: contact lines in presence of a flow.