GDR Micro Nano Fluidique

Mois : avril 2016

The subject of the Ph.D. thesis is in the domains of (electro)microfluidics and (bio)nanotechnology. The project will work towards developing methods for extracting information on the chemical and biological state of microfluidic samples (e.g. the presence of biomarkers) by analyzing the behaviour of individual metallic nanoparticles injected into the sample. These particles are characterised by their stochastic microscopic movements, their optical signal and their response to the microscale electric field.

More information : SATIE-ENS-Rennes-thesis-offer-2016

phenomena as well as from technological applications in the field of ultra-sensitive measurements. In particular during the last decade, the convergence between these concepts and fabrication techniques derived from semiconductors [3] and MEMS/NEMS has yielded simpler device structures and experimental environments. This fast growing research activity opens new perspectives and is undoubtedly a promising scientific route that will have a great impact for sensing applications, e.g. mass sensors for biological or chemical detection, inertial sensors (gyroscopes, accelerometers), force sensors (magnetic, mechanical stress…) [4, 5, 6].

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While the pervaporation process leading to dense materials is well understood [4, 5], several issues remain unsolved: they concern the mechanical instabilities that often occur during the solidification. In most of the investigated cases (dispersions, polymers, inks, …), the evaporation of the solvent indeed significantly deforms the pervaporation matrix, leading to the delamination of the material from the substrate and very often, fracture and crack eventually form. Such an outcome is quite deleterious to the good quality of the final material, both for its characterization and its application.
We wish to understand (and to master) the combined roles of i) the microfluidic matrix and ii) the dispersed fluid undergoing evaporation on the properties of the final printed micro-structures.
Importantly, the high confinement of the pervaporation technique is likely to play a crucial role as compared to the traditional case of the drying of thin films, but the two techniques share important similarities which we will exploit next in the film-making processes in order to produce large-scale materials.

More informations : 2015_AMADEus_047

The 2016 Annual Meeting of the GDR Micro et Nano Fluidique will take place in Paris (at IPGG) the 23-24th of June 2016.

Free (but mandatory) registration

Join us for a two-days event on micro-nano systems and micro-nano fluidics. The event will be composed of a mix of invited talks and a large number of contributed talks and posters.

Abstract submission deadline : 8 May 2016

Come meet your colleagues from around France and Europe, and share the banquet with us on the 23rd evening.

 

Plenary speakers (confirmed) :

Jan Eijkel (U. Twente, Netherlands)
John McKinney (EPFL, Switzerland)

A poster session is included in the program to favor exchanges between scientists of the field.

 

REGISTRATIONhttps://www.weezevent.com/gdrmnf2016

They often require a preliminary step of separation in order to isolate microbial cells, presumed pathogens, from the other particle components and/or to concentrate them before identification. The samples often contain a mixture of suspended particles and several micro-organisms species with different morphologies and sizes. An easy and portable way to achieve preliminary sorting or separation of these micro-organisms can be done based on their migration under flow in micro-channels.

More information : Post-doc-migration-complex-shape-particles-FERMaT

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