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Les stages d'innovations financés en 2020-2021

LAMCOS - Master 2 of Mechanics or applied Mathematics - Towards real time topology optimization of architectured materials

Architectured materials are artificial composites possessing specific properties obtained thanks to adequate topology or morphology designs. They are given high attention in many industrial applications (aeronautic, biomedical, building, vehicles, …) thanks to their enhanced performances. Topology optimization gives a practical way to distribute the material within a design domain and thus achieve the optimized performances. Such materials can be easily manufactured using 3D printer. The high power resolution of the recent 3D printers allows to achieve billion voxels design of architectured materials opening so the possibility to develop materials with original microstructures. However, the algorithms usually used for topology optimization reach their limits when scaling with small microstructures sizes. Moreover, running many computations for parametric studies (e.g. specific case optimization) still remains a challenging issue for many engineering applications. To handle this issue, real time original strategies are combined with multiscale topology optimization. At the offline step, a database of optimized architectured materials is built, it is then called at the online step for real time and rapid topology optimization without any need to rerun the topology optimization process.

IMP - Master 2 Matériaux Innovants pour la Santé, le Transport et l'Energie - Bio-based ionic membrane

Single-ion electrolyte membranes are materials having numerous applications for energy (fuel cells, flow battery, metal-ion batteries and (super) capacitor) and environmental technologies (wastewater treatment). The most common membranes are based on perfluorosulfonated or aromatic ionomers (polymers bearing a small fraction of ionic groups), resulting into a solid material able to transport counter-ions through a complex nanostructure. Yet such materials are expensive, are not environmentally friendly due to the chemical and solvents employed for their synthesis, and their mechanical and functional properties can hardly be adjusted which strongly constrain the design of technological devices.We recently developed a new methodology to obtain ionic membranes by processing biobased materials in water. The goal of this internship is to investigate the technological potential of such approach.

LMFA - Master 1 ou Master 2 with a strong component in fluid mechanics - Stenay spreading of surfactant-covered particles on a liquid interface

Le comportement de particules piégées à un interface liquide-liquide est un problème complexe car il implique plusieurs mécanisme de répulsion ou attraction entre grains. Ce projet exploratoire a pour but d'étudier expérimentalement la dynamique d'étalement de grains "pollués" par un surfactant à un interface eau-huile. Le/la stagiaire se concentrera sur la mesure de la vitesse radiale à l'interface.