actualités 2024

Scientists from the CNRS, a consortium of German universities, and the Max-Planck-Institut für Kernphysik working at the H.E.S.S. observatory have recently identified electrons and positrons with the highest energies ever recorded on Earth. They provide evidence of cosmic processes emitting colossal amounts of energy, the origins of which are as yet unknown.

Infrasound are sound waves with frequencies below 20 Hz, outside the range audible to the human ear. Although they escape our auditory perception, these waves have significant effects on health, the environment and even animal biology. A great deal of research has explored the effects of infrasound, both natural and man-made, and has led to a better understanding of its implications.

Publication of the RDP in PNAS on May 30, 2024. Communication by CNRS Physics on July 8, 2024. What principles govern the layout of living organisms? By combining physical models and experimental analysis, an international collaboration involving RDP scientists has identified a generic law linking the spatial organization of cells to their ability to faithfully transmit their specific characteristics during cell division.

Publication of the Physics Laboratory in the Physical Review Letters on July 31, 2024. Communication by CNRS Physics on September 2, 2024. Experiments on a classical microscopic system show that, while the second principle of thermodynamics is still valid on average, it can be circumvented experimentally in 95% of cases! A study conducted at the Physics Laboratory of ENS de Lyon, published in Physical Review Letters .

Publication of the Physics Laboratory in the Physical Review Materials on July 9, 2024. Communication by CNRS Physics on September 5, 2024. Using an innovative measurement technique, researchers at the Physics Laboratory of ENS de Lyon (LPENSL, CNRS / ENS de Lyon) have succeeded in precisely tracking the steps characterizing the transformation of milk into cheese, which could deepen our understanding and help optimize the mechanisms at work in the manufacture of the many cheeses that happily garnish our plates.

Publication of the Chemistry Laboratory in Nature Photonics on September 2, 2024. CNRS press release on September 4, 2024. A scintillating aerogel enabling real-time measurements with excellent sensitivity to certain radioactive gases, essential to monitoring the proper functioning of nuclear power plants, has just been developed by a group of physicists, chemists, and metrologists from the CNRS, the University Claude Bernard Lyon 1, the CEA, and the ENS de Lyon.

A scintillating aerogel enabling real-time measurements with excellent sensitivity to certain radioactive gases, essential to monitoring the proper functioning of nuclear power plants, has just been developed by a group of physicists, chemists, and metrologists from the CNRS, the University Claude Bernard Lyon 1, the CEA, and the ENS de Lyon.

In collaboration with Smiths Detection, CEA-Leti developed an innovative detection module for small-angle X-ray diffraction.

The recent discovery of a binary system containing an extremely rare object, the most massive black hole (apart from SgrA*) ever detected in our Galaxy, calls into question the models for the formation of these bodies. Up until now, the Gaia space observatory has been used to observe the position and motion of stars, uncover the underlying structures of our Galaxy, and find new exoplanets.

Publication of the Physics Laboratory in the Journal of Rheology on April 11, 2024. In a recent study, a team of scientists led by researchers from the Physics Laboratory of ENS de Lyon (CNRS/ENS de Lyon) focused on the flow-induced responses of colloidal dispersions. Their work provides a better understanding of how colloids structure themselves under the effect of shear, an important step towards understanding this essential process in many industrial applications.