Publication
The influence of surface tension gradients on drop coalescence
Publications associées (32)
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Christian Depeursinge, Eduardo Solanas Vilar, Jonas Kühn, Stéphane Bourquin
We present fast high-roughness and non-contact surface measurements by digital holographic microscopy (DHM). By using single- and dual-wavelength operation modes, coupled with advanced image stitching and non-measured points management methods, the techniq ...
SPIE2010Determination of a scale-up factor from mixing time studies in orbitally shaken bioreactors
Christos Comninellis, Florian Maria Wurm, Mohamed Farhat, David Hacker, Stéphanie Tissot
Efficient mixing in bioreactors is essential in order to avoid concentration gradients which can be harmful for mammalian cells. To study mixing and its scalability in orbitally shaken cylindrical bioreactors, we measured mixing times in containers with no ...
Elsevier2010CFD modelling of liquid–liquid multiphase microstructured reactor: Slug flow generation
Albert Renken, Lioubov Kiwi, Madhvanand Namadeo Kashid
Microreactor technology, an important method of process intensification, offers numerous potential benefits for the process industries. Fluid–fluid reactions with mass transfer limitations have already been advantageously carried out in small-scale geometr ...
Elsevier2010On surface tension modelling using the level set method
The paper describes and compares the performance of two options for numerically representing the surface tension force in combination with the level set interface-tracking method. In both models, the surface tension is represented as a body force, concentr ...
Wiley-Blackwell2009The effect of nanometre-scale structure on interfacial energy
Francesco Stellacci, Kislon Voitchovsky
Natural surfaces are often structured with nanometre-scale domains, yet a framework providing a quantitative understanding of how nanostructure affects interfacial energy, gamma(SL), is lacking. Conventional continuum thermodynamics treats gamma(SL) solely ...
2009Effect of capillary pressure and surface tension on the deformation of elastic surfaces by sessile liquid microdrops: An experimental investigation
Sessile liquid drops are predicted to deform an elastic surface onto which they are placed because of the combined action of the liquid surface tension at the periphery of the drop and the capillary pressure inside the drop. Here, we show for the first tim ...
American Chemical Society2008Wetting properties of flat-top periodically structured superhydrophobic surfaces
In recent years, superhydrophobic surfaces have attracted a considerable amount of attention from the academic and industrial communities. This growing interest is mainly caused by the fundamental physico-chemical theoretical aspects that remain obscure an ...
EPFL2007Inkjet-Based Deposition of Micro/Nano-Objects on Functional Surfaces - Controlling and Exploiting Self-Assembly across Length-Scales
Jürgen Brugger, Vahid Fakhfouri, Grégory Mermoud
In this project, we intend to use inkjet-based delivery of functional liquid droplets on pre-structured surfaces for the directed (self-)assembly of micro/nano-objects as experimental platform to build up and validate multi-level models of micro-droplet de ...
2006From Rolling Ball to Complete Wetting: The Dynamic Tuning of Liquids on Nanostructured Surfaces
In this work, for the first time, a dynamic electrical control of the wetting behavior of liquids on nanostructured surfaces, which spans the entire possible range from the superhydrophobic behavior to nearly complete wetting, has been demonstrated. Moreov ...
2004Analysis and numerical simulation of free surface flows
Mathematical and numerical aspects of free surface flows are investigated. On one hand, the mathematical analysis of some free surface flows is considered. A model problem in one space dimension is first investigated. The Burgers equation with diffusion ha ...
EPFL2004