For the Fête de la Science 2023, CLYM opens its doors to the public. Demonstrations will be held on different types of microscopes used for research: electron microscopes, atomic force microscopes. You willll be able to discover the wonders hidden in your everyday life, with details ranging from the micrometer to the atom. A breathtaking journey for all ages!
Abiotic reactions, not caused by living beings, are a missing key to determine where life may have emerged. Key gases of a prebiotic environment (N2, H2, CH4, CH3SH) associated with polyaromatic carbonaceous materials and nanodiamonds have been identified within samples from the Atlantis massif located along the Mid-Atlantic Ridge.These varied ingredients remain trapped until they are remobilized at shallower depths, where they can participate in the formation of complex organic molecules.These results revive the theory of a hydrothermal origin for the emergence of life on Earth.
Since their formation, the Earth and the other planets or bodies of the solar system, such as the moon or Mars in particular (see the recent images of the surface of Mars taken by the Perseverance Supercam cameras), have been subjected to a continuous bombardment of solid bodies (asteroids) from space.
Scientists are trying to date (thanks to the U-Pb method) precisely the moments when asteroids have impacted the Earth. The idea is to link these impacts to possible environmental catastrophes that they would have initiated. To do this, we are looking for clues preserved in the rocks that were shocked during the impact on Earth. These clues are identifiable in the minerals on a very small scale (a few nanometers) and testify to the intense deformations that the material underwent during the impact.
We are looking for a postdoctoral researcher with a PhD in physics (applied mathematics, materials
science). The candidate should have experience with one or more of the following topics: electron diffraction,
Ce post doc s’intègre dans l’ANR DENSE (Dense structures on the nanoscale ; portée par R. STOIAN, LabHC) qui propose une technique innovante pour créer de nouveaux matériaux de haute densité jusqu’à de nouvelles structures cristallines (matériaux durs, minéraux).
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