A5037021874- Fluid Dynamics and Thin Films
- Electrowetting and Microfluidic Technologies
- Fluid Dynamics and Turbulent Flows
- Microfluidic and Bio-sensing Technologies
- Nanofabrication and Lithography Techniques
- Electrohydrodynamics and Fluid Dynamics
- Microfluidic and Capillary Electrophoresis Applications
- Rheology and Fluid Dynamics Studies
- Metallurgical Processes and Thermodynamics
- Solar and Space Plasma Dynamics
- Advancements in Photolithography Techniques
- Modular Robots and Swarm Intelligence
- Characterization and Applications of Magnetic Nanoparticles
- Geomagnetism and Paleomagnetism Studies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Fluid Dynamics and Mixing
- nanoparticles nucleation surface interactions
- Advanced Surface Polishing Techniques
- Aluminum Alloy Microstructure Properties
- Fluid Dynamics and Heat Transfer
- Solidification and crystal growth phenomena
- Surfactants and Colloidal Systems
- Heat Transfer and Boiling Studies
- Pickering emulsions and particle stabilization
- Block Copolymer Self-Assembly
Science et Ingénierie des Matériaux et Procédés
2015-2025
Institut polytechnique de Grenoble
2014-2025
Centre National de la Recherche Scientifique
2012-2025
Université Grenoble Alpes
2015-2025
Laboratoire de Recherche Hydrodynamique, Energétique et Environnement Atmosphérique
2013-2019
CEA Cadarache
2018
CEA Grenoble
2018
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2018
École Centrale de Nantes
2010-2017
Laboratoire d'études et de recherche en sociologie
2013-2015
We seek the conditions in which Alfvén waves (AW) can be produced laboratory-scale liquid metal experiments, i.e. at low magnetic Reynolds Number ( $Rm$ ). are incompressible propagating along fields typically found geophysical and astrophysical systems. Despite high values of these flows, AW undergo dissipation thin regions, for example solar corona where anomalous heating occurs (Davila, Astrophys. J. , vol. 317, 1987, p. 514; Singh & Subramanian, Sol. Phys. 243, 2007, pp. 163–169)....
In this paper, an experimental study of laminar magnetohydrodynamic (MHD) buoyancy-driven flow in a cylindrical cell with axis horizontal is described. A steady uniform magnetic field applied vertically to the mercury-filled cell, which also subjected temperature gradient. The main features internal MHD thermogravitational are made experimentally evident from and electric potential measurements. Whatever level convection, raising Hartmann number Ha value order 10 sufficient stabilize...
This experimental study analyzes the relationship between dimensionality of turbulence and upscale or downscale nature its energy transfers. We do so by forcing low-$\mathrm{R}\mathrm{m}$ magnetohydrodynamic in a confined channel, while precisely controlling means an externally applied magnetic field. first identify specific length scale ${\stackrel{^}{l}}_{\ensuremath{\perp}}^{c}$ that separates smaller 3D structures from larger quasi-2D ones. then show inverse cascade horizontal kinetic...
Oscillating electrowetting on dielectrics (EWOD) with coplanar electrodes is investigated in this paper as a way to provide efficient stirring within drop biological content. A supporting model inspired from Ko et al. [Appl. Phys. Lett. 94, 194102 (2009)] proposed allowing interpret oscillating EWOD-induced internal flow the result of current streaming along surface deformed by capillary waves. Current behaves essentially generator and momentum it sustains (viscous) even more significant...
This letter presents a study of viscous smoothening dynamics nanopatterned thin film. Ultrathin film manufacturing processes appearing to be key point nanotechnology engineering and numerous studies have been recently led in order exhibit driving parameters this transient surface motion, focusing on time scale accuracy method. Based nanomechanical analysis, shows that controlled shape measurements provided much more detailed information about reflow mechanism. Control process any complex...
We present a method to measure the viscosity of polymer thin films. The material is spin coated onto silicon substrate and specially designed nanopatterns are imprinted on film using thermal nanoimprint. A brief reflow performed during which patterns flow under surface tension. Spectral densities topology before after annealing compared rheologic properties, such as viscosity, extracted fitting parameters an evolution model. Contrary previous similar approaches, emphasis was put spatial...
The role of an electric field on dielectric liquids confined in a differentially heated cavity is considered microgravity conditions. In the purpose sustaining permanent thermally induced electrohydrodynamic flows, new electrode arrangement proposed, different from typical configurations usually investigated literature. aim to generate non-uniform distribution imposed and gain benefit existing temperature gradient angular momentum. Scaling analysis numerical study are developed order...
Materials selected for microfluidic technology exhibit mechanical properties that can be a source of innovation. For instance, devices take advantage rigid (glass, silicon) or soft (elastomer, PDMS) materials, as well porous such paper, are widely reported in the literature. In this we illustrate potentialities hyper elastic materials lab-on-chip developments. Two breakthrough examples reported: (i) new digital microfluidics approach based on stretchable membrane addressing large range...
In this paper, we examine the dimensionality of a single electrically driven vortex bounded by two no-slip and perfectly insulating horizontal walls distant $h$. The study was performed in weakly inertial limit means an asymptotic expansion, which is valid for any Hartmann number. We show that leading order can be fully described using parameter $l_z^\nu / h$, where $l_z^\nu$ represents distance over Lorentz force able to act before being balanced viscous dissipation. base flow happens...
As a first step towards two-phase magnetohydrodynamics (MHD), this paper addresses an original analytical coupling between surface rheology, e.g., gradually oxidizing liquid metal surface, ruled by the Boussinesq number Bo, and supporting annular MHD flow, Hartmann Ha, in general layout of classical deep-channel viscometer, as developed Mannheimer Schechter [J. Colloid Interface Sci. 32, 195–211 (1970)]. Using matched asymptotic expansion based on small parameter 1/Ha, we can express...
This paper addresses a method to estimate the size of sessile drop and measure its evaporation kinetics by making use both Michelson interferometry coplanar electrowetting. From high-frequency electrowetting voltage, contact angle droplet is monitored permanently obtain half-liquid sphere, thus complying perfectly with theory based on constant (Bexon, R.; Picknett, R.J. Colloid Interface Sci. 1977, 61, 336−350). Low-frequency modulation actuation also applied cause shape oscillations...
This paper presents a liquid surface biosensor whose potential applications are analogue to the well-known quartz crystal microbalance. The technique involved is based on resonance of meniscus capillary waves here excited at functionalized air-water interface. strategy proposed in this can be seen as promising way avoid much possible any transfer Blodgett type. Meniscus supplied by electrodynamical vibration brimful cylinder filled with water used characterize aging an interface covered...
The authors describe in this paper a fast and cost-effective method to measure the viscoelastic properties of thin polymer film from reflow nanoimprinted patterns. material is spin-coated onto silicon substrate specially designed nanopatterns are imprinted on using thermal nanoimprint. A first measurement profile done by atomic force microscopy (AFM). then heated at definite temperature above glass transition during time. rapidly cooled down reflowed again measured AFM. Spectral densities...