Fundamental Research Division
The DRF at the CEA assemble approximately 6,000 scientists since January 2016.
For the first time, wall paintings from the Late Middle Ages in a castle in Burgundy and a church in Switzerland have undergone absolute dating, by measuring the carbon-14 contained in a pigment widely used in the paint, namely lead white.
A team from the CEA-Iramis has shown that it is possible to bring an ensemble of electron spins to a temperature lower than that of the supporting crystal, thanks to their being coupled to an electromagnetic field within a resonant microwave cavity. This patented discovery greatly improves the detection of EPR (Electron Paramagnetic Resonance) and NMR (Nuclear Magnetic Resonance) signals.
A CEA team, in collaboration with the Pablo de Olavide University (Seville, Spain) and the Swiss company Solaronix, has invented a new family of photochromic dyes for photovoltaics. The result of this work paves the way for photovoltaic glasses whose transparency adapts to the luminosity, an interesting application in particular in the buildings and automotive sectors.
The CEA-Irig (IBS) has reported in Nature Catalysis a review on SAM proteins, a type of catalyst that produces highly reactive radical species.
At a time when mercury is becoming a highly toxic material for the nervous system, researchers at the Irig [collaboration] are making significant progress towards efficient, mercury-free, deep-ultraviolet light-emitting diodes used in water and air treatment, disinfection, counterfeit detection, etc...
To be or not to be expressed? Researchers at the CEA-Irig (IBS) are showing with precision how a bacterial metalloprotein controls the expression of certain genes. And all it takes is an electron and a proton!
An international collaboration involving the LSCE (CEA-CNRS-UVSQ) is proposing an agronomic scenario that is beneficial for the climate and biodiversity: cultivated areas reduced by half, without changing the input volumes, could be as productive as they are today if our practices are revised on a global scale.
Researchers from the CEA-Irig and the “Unité mixte de physique” CNRS-Thales have proposed a new spintronic approach based on ferroelectricity. For the first time, this approach allows spin currents to be manipulated using non-magnetic interfaces controlled by electric fields. The result: the electrical consumption of non-volatile spintronic devices can potentially be reduced by a factor of one thousand!
We live in a world of matter – because matter overtook antimatter, though they were both created in equal amounts by the Big Bang when our universe began. As featured on the cover of Nature on 16 April 2020, neutrinos and the associated antimatter particles, antineutrinos, are reported to have a high likelihood of differing behaviour that offers a promising path to explaining the asymmetry between matter and antimatter.
How is the magnetic field generated inside the Sun? By which mechanisms does it create solar spots and eruptions of magnetised clouds and particles? To find out, the European consortium Wholesun, coordinated by the CEA, is developing numerical models of the star in its entirety using the most powerful supercomputers. The numerical models will be used in combination with observations from Solar Orbiter, an ESA satellite launched on 10 February 2020.
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.