Physics of interfaces have enjoyed a renewed interest thanks to the introduction of new experimental tools and theoretical concepts able to design and rationalize interfaces with large degree of complexity (surfaces with controlled gaussian curvatures, liquid crystal shells), in which colloidal systems show original dynamics. Thanks to lithography and microfluidics, such complex interfaces are designed. In this context, the main results of the group concern : (1) the design and characterization of liquid interfaces presenting complex morphologies and order and their coupling with colloidal particles trapped on them ; and (2) the study of equilibrium and non-equilibrium dynamics taking place at the interface of fluid with different degrees of complexity.
We have expertise with manipulations of particles based on optical tweezers or microfluidic approaches. We have also developed original experimental setups based on optical tools (microscopy, optical trappings, scattering, holography and ellipsometry) allow measuring diffusion coefficients, contact angles and interactions between colloids at these interfaces.
DYNAMICS OF PASSIVE COLLOIDS AT THE INTERFACES OF SIMPLE FLUIDS,click !
ACTIVE JANUS COLLOIDS AT THE INTERFACE OF SIMPLE FLUIDS, click !
COLLOIDS AT THE INTERFACE BETWEEN COMPLEX FLUIDS, click !
OFF-EQUILIBRIUM MISCIBLE FLUID INTERFACES, click !
INTERFACE TAILORED MATERIALS, click !
|Nonequilibrium Interfacial Tension in Simple and Complex Fluids |
(Article) Publié: Physical Review X, vol. 6 p.041057 (2016)
|Wetting and orientation of catalytic Janus colloids at the surface of water |
(Article) Publié: Faraday Discussions, vol. 191 p.305-324 (2016)
|MHz Ultrasound Induced Roughness of Fluid Interfaces |
(Article) Publié: Langmuir, vol. 32 p.10177-10183 (2016)
Dynamics of passive colloids at the interfaces of simple fluids
The interface between two fluids is extremely efficient to trap particles ranging from nanometer to millimeter sizes. In the past, (...)
Active Janus colloids at the interface of simple fluids
Colloids partially coated with platinum are able to perform autonomous motion if immersed in hydrogen peroxide solutions. A catalytic (...)