In the framework of reducing energy losses and of improving eco-efficiency, the Lumiere project aims to better understand and model the mechanisms governing the mixed lubrication regime with the objective of a more accurate estimate of the lifetime and friction losses of the lubricated components. Among the many facets of this problem, the impact of wear particles and their interactions with the lubricating fluid and the surfaces will be more particularly studied: by in situ observations on dedicated test benches and by the method of discrete elements (DEM) coupled with a lubrication model. The results will then be integrated into a multiscale tool allowing simulations at the component level. The work will be carried out by the Pprime Institute, specialized in the study and simulation of lubrication in collaboration with the LaMCoS, recognized for its skills in the experimental study of tribology and the LMGC, expert in the simulation of contact and wear by DEM.

Aquaculture is an important source for food, nutrition, income and livelihoods for millions of people around the globe. Intensive fish farming is often associated with pathogen outbreaks and therefore high amounts of veterinary drugs are used worldwide. As in many other environments, mostly application of antimicrobials triggers the development of (multi)resistant microbiota. This process might be fostered by co-selection as a consequence of the additional use of antiparasitics. Usage of antimicrobials in aquaculture does not only affect the cultured fish species, but - to a so far unknown extent - also aquatic ecosystems connected to fish farms including microbiota from water and sediment as well as its eukaryotes. Effects include increases in the number of (multi)resistant microbes, as well as complete shifts in microbial community structure and function. This dysbiosis might have pronounced consequences for the functioning of aquatic ecosystems. Thus in the frame of this project we want to study consequences of antimicrobial/-parastic application in aquaculture for the cultured fish species as well as for the aquatic environments. To consider the variability of aquaculture practices worldwide four showcases representing typical systems from the tropics, the Mediterranean and the temperate zone will be studied including freshwater and marine environments. For one showcase a targeted mitigation approach to reduce the impact on aquatic ecosystems will be tested.

The context of wide bandgap power semiconductor devices necessitates to reinvent current packaging technologies. An innovative solution, based on the integration of power components within heat sinks, seems to be an excellent candidate to increase the power density of static converters. It is also highly modular, which makes it possible to envisage easier design and maintenance. In the DESTINI project, research works will be proposed to set up electrostatic, electrothermal and electromagnetic modeling methods of this kind of package. Reliability aspects will be addressed through the implementation of tools and methods for the study of damage. Technological works will be carried out to make test setups.

The main aim of this proposal is to implement a synergistic approach leveraging innovative High-Performance Computing techniques and observations to advance fundamental knowledge on the dynamics underlying the emergence of large scale extreme events and local instabilities in stratified and rotating turbulent fluids and their feedback on mixing and transport properties of such flows. This project has the ambition to achieve an unprecedented statistical and phenomenological characterization of large scale extreme events and their feedback on the small scales in a novel paradigm in fluid turbulence: that of three dimensional rotating and stratified flows where the energy goes to both large and small scales with a dual constant flux cascade. The fundamental study proposed is therefore a synthesis of major research themes of the Axe 7.1 The capability to design state of the art high-resolution DNS of rotating and stratified turbulence able to capture all these phenomena in a parameter space compatible with the real flows, together with the expertise and means present within the scientific team of the EVENTFUL project to design experiments and field campaigns in the stratosphere and Mesosphere-Lower Thermosphere (MLT), will lead to a comprehensive assessment of the emergence and dynamics of large-scale powerful events in the active flow fields, by means of an – innovative and synergistic – combined use of observations, DNS and machine learning techniques, as detailed in the following. Objectives will be accomplished taking advantage of the extensive experience gained by the scientific team in implementing the proposed methodologies and in the investigation of anisotropic turbulent flows.

The technology of RF communications systems has experienced a phenomenal progress in the last decades. Gallium nitride (GaN) has been identified as the semiconductor that will take over after silicon (Si) to meet the needs of the increasingly market requests. This is explained by the physical parameters of this new material, which highly exceed those of Si. The objective of this project is the development of an enhancement and depletion modes HEMT-GaN based technologies suitable for the manufacturing of MMIC circuits operating at high frequency. This project is divided in 3 research axes: 1) GaN based MMIC fabrication process, including epitaxy, 2) device characterization and modeling, 3) circuit design and characterization. The consortium gathers 3 research laboratories and 1 industrial company covering a very wide range of skills and applied knowledge. The different partners are complementary and expert in the field of GaN activities, which is a major key that will lead to the success of this project. In Sky-GaN project, the development of short gate length GaN-HEMT process will be used to fabricate a prototype Power Amplifier (PA) MMIC circuits to validate these new developed technologies. Indeed, the optimized micro-fabrication process that will be developed will allow the production of new custom PA circuit with higher performance in frequency band covering the E-band [71-76] GHz and [81-86] GHz for both technologies. These fabricated prototypes will also be used as demonstration samples to support the development of new business opportunities for the industrial partner, creating new job opportunities for young researchers and highly qualifier professional. On the other hand, for the academic laboratories participating to Sky-dream project, the research and development work will produce important scientific impact and economic value, which is in complete agreement with the mission of CNRS.