The Knowledge Factory - Sur le même thème https://www.cea.fr/drf/english/Pages/News/Scientific-results/2018/C’mon-electrons,-let’s-do-the-twist!.aspx DRF english version en-US https://www.cea.fr/_layouts/15/images/i2i/icon-144x144-1033.png The Knowledge Factory - Sur le même thème https://www.cea.fr/drf/english Modelling the influenza viral genome to an unprecedented scale https://www.cea.fr/drf/english/Pages/News/Scientific-results/2024/modelling-the-influenza-viral-genome-to-an-unprecedented-scale.aspx Scientists at IRIG have observed, to a resolution of 0.5 nanometres, the interactions between the influenza virus genome and its associated proteins. This opens the way to a better understanding of the mechanisms underlying the replication of this virus with high pandemic potential. Virus ; Molecular mechanisms ; Cell and molecular imaging general public ; Journalists ; Researchers IRIG Découvertes et avancées ; Scientific result Tue, 30 Jan 2024 11:00:00 GMT Record coherence time for a hole spin in natural silicon https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/record-coherence-time-for-a-hole-spin-in-natural-silicon.aspx Researchers at the CEA-Irig have demonstrated that there is an optimal configuration for bringing the coherence times of hole spins closer to those of electron spins. Spintronics ; Quantum Physics ; Micro-nanotechnologies general public ; Journalists ; Researchers Découvertes et avancées ; Scientific result Thu, 22 Sep 2022 10:00:00 GMT Where does turbulence irreversibility come from? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/where-does-turbulence-irreversibility-come-from.aspx Researchers from the CEA-Iramis and their partners at the Laboratoire de Mécanique des Fluides de Lille have been exploring the origin of irreversibility through a unique large-scale turbulence experiment. Physics ; Fundamental Research general public ; Journalists ; Researchers Iramis Découvertes et avancées ; Scientific result Wed, 07 Sep 2022 10:00:00 GMT A key role for quantum entanglement https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/a-key-role-for-quantum-entanglement.aspx A method known as quantum key distribution has long held the promise of communication security unattainable in conventional cryptography. An international team of scientists has now demonstrated experimentally, for the first time, an approach to quantum key distribution that is based on high-quality quantum entanglement — offering much broader security guarantees than previous schemes. Quantum Physics ; Communications ; Defence & security general public ; Journalists ; Researchers IPhT Découvertes et avancées ; Scientific result Wed, 27 Jul 2022 15:00:00 GMT An artificial leaf that produces solar hydrogen https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/an-artificial-leaf-that-produces-solar-hydrogen.aspx Researchers from the CEA-Irig and their Vietnamese partners have developed an artificial leaf capable of converting solar energy into hydrogen, with a 2% conversion yield. This is a promising achievement towards the storage of renewable energy sources! Hydrogen ; Photovoltaic solar power ; Chemistry general public ; Journalists ; Researchers IRIG Découvertes et avancées ; Scientific result Fri, 17 Jun 2022 10:00:00 GMT Developing an identity card for each quantum bit on silicon https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/developing-an-identity-card-for-each-quantum-bit-on-silicon.aspx Using a “pump-probe” spectroscopic technique, researchers at the CEA-Irig have succeeded in creating an authentic identity map of individual quantum bits, based on the spin of holes in silicon. This is an essential task that can easily be extrapolated to high qubit densities! Spintronics ; Micro-nanoelectronics ; Quantum Physics general public ; Journalists ; Researchers IRIG Découvertes et avancées ; Scientific result Tue, 18 Jan 2022 11:00:00 GMT Detecting spins with a single photon counter https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/detecting-spins-with-a-single-photon-counter.aspx According to researchers from the CEA-Iramis, it is now possible to detect spins thanks to an original method using a single photon sensor that is insensitive to noise. This is a major step forward for the measurement of spin quantum bits or their conversion into photons. Quantum Physics ; Spintronics general public ; Journalists ; Researchers Iramis Découvertes et avancées ; Scientific result Fri, 17 Dec 2021 11:00:00 GMT Observation of the electric dipole associated with spin waves in graphene https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/observation-of-the-electric-dipole-associated-with-spin-waves-in-graphene.aspx Using an electronic analog of a Mach-Zehnder interferometer, researchers from the CEA-Iramis and their partners observed for the first time the electric dipole associated with spin waves (magnons) in a ferromagnet in the quantum Hall regime. These spin waves could be used in particular to transfer information from one quantum bit to another. Quantum Physics ; Micro-nanoelectronics general public ; Journalists ; Researchers Iramis Découvertes et avancées ; Scientific result Fri, 17 Dec 2021 11:00:00 GMT Quantum physics: a record coherence time for erbium spins https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/quantum-physics-a-record-coherence-time-for-erbium-spins.aspx Researchers from CEA-Iramis have demonstrated that, contrary to what is generally believed, the electronic spin carried by erbium can have a long coherence time. This makes it a good candidate for relaying quantum information via photons. Quantum Physics ; Spintronics general public ; Journalists ; Researchers Iramis Découvertes et avancées ; Scientific result Fri, 17 Dec 2021 11:00:00 GMT 4D printing of actuators in magneto-active polymers https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/printing-of-actuators-in-magneto-active-polymers.aspx Researchers at the CEA-Iramis (Laboratoire des Solides Irradiés) are making actuators out of magneto-active polymers, foreshadowing the potential of 4D printing to fabricate “behavioral” objects using additive manufacturing of smart materials. New technologies ; Materials ; Physics general public ; Journalists ; Researchers Iramis Découvertes et avancées ; Scientific result Thu, 25 Nov 2021 11:00:00 GMT The most powerful MRI scanner in the world delivers its first images! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/premieres-images-irm-iseult-2021.aspx September 2021, the 11.7 Tesla MRI of the Iseult project, the most powerful in the world for human imaging, has just unveiled its first images. Health & life sciences ; Brain ; Physics Journalists ; general public ; Researchers ; Partners Neurospin News ; Press release ; Découvertes et avancées Brain;MRI;neuroanatomy;Iseult;supra; Thu, 07 Oct 2021 05:00:00 GMT Paired with quantum memory, quantum computers can “shrink” by a factor of a thousand! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/paired-with-quantum-memory-quantum-computers-can-shrink-by-a-factor-of-a-thousand.aspx Theoretical physicists at the IPhT have shown that by equipping a quantum processor with quantum memory, it is possible to reduce the number of quantum bits needed to solve an emblematic problem by three orders of magnitude. Computing ; Quantum Physics general public ; Journalists ; Researchers IPhT Découvertes et avancées ; Scientific result Tue, 28 Sep 2021 10:00:00 GMT HLA-G: a new anti-cancer therapeutic target https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/hla-g-a-new-anti-cancer-therapeutic-target.aspx Researchers at the CEA-Jacob (Immuno-Hematology Research Unit – SRHI) have designated a new target for the immunotherapy treatment of clear cell renal cell carcinoma, aimed at patients who cannot undergo conventional immunotherapy. Cancer ; Diagnosis and innovative treatment ; Molecular mechanisms general public ; Journalists ; Researchers Jacob Découvertes et avancées ; Scientific result Fri, 24 Sep 2021 10:00:00 GMT An enzymatic process for reducing CO2 https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/An-enzymatic-process-for-reducing-CO2.aspx Researchers from the CEA-Irig and their partners have developed a new enzymatic process for reducing CO2 and oxidizing CO. Efficient and able to operate under mild conditions, it could be used to purify gas from biomass pyrolysis in order to produce fuels or chemical precursors. Bioenergy ; Molecular mechanisms ; Chemistry general public ; Journalists ; Researchers IRIG Découvertes et avancées ; Scientific result Mon, 06 Sep 2021 10:00:00 GMT Quantum physics finds its way into the heart of flowers https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/quantum-physics-finds-its-way-into-the-heart-of-flowers.aspx Researchers from the CEA-Joliot (I2BC) and their partners have deciphered for the first time the quantum process of energy dissipation in aggregates of natural flower carotenoids. This fundamental biological mechanism could inspire the design of photovoltaic materials capable of supplying two electrons for every photon. Molecular mechanisms ; Vegetal physiology ; Quantum Physics ; Photovoltaic solar power general public ; Journalists ; Researchers Joliot Découvertes et avancées ; Scientific result Fri, 03 Sep 2021 10:00:00 GMT DNA transcription can now be watched “live” in any cell of a plant https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/dna-transcription-can-now-be-watched-live-in-any-cell-of-a-plant.aspx For the first time, a team from Biam is showing the transcription of DNA into messenger RNA in the cells of young plants, in real time and with an unprecedented resolution. This exceptional live work reveals highly useful information on the biological mechanisms linked to the plant’s response to its environment. Cell and molecular imaging ; Molecular mechanisms ; Vegetal physiology ; DNA general public ; Journalists ; Researchers BIAM Découvertes et avancées ; Scientific result Mon, 09 Aug 2021 10:00:00 GMT A microwave photon disappears in an array of superconducting Josephson junctions https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/a-microwave-photon-disappears-in-an-array-of-superconducting-josephson-junctions.aspx It is as if a microwave photon interacting with a small superconducting junction was split into several photons of lower energy! This is the scenario proposed by an IRIG researcher to interpret recent experiments using a network of superconducting Josephson junctions. Quantum Physics ; Micro-nanotechnologies ; Photonics ; Theoretical physics general public ; Journalists ; Researchers IRIG Découvertes et avancées ; Scientific result Wed, 09 Jun 2021 10:00:00 GMT Phytoplankton: cellular architecture and energy metabolism https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/phytoplankton-cellular-architecture-and-energy-metabolism.aspx Drawing upon the 3D reconstruction of the cellular architecture of several phytoplankton families, researchers at the CEA-Irig have demonstrated that the physiological responses of these eukaryotes are associated with certain characteristics of their energy-producing organelles. This work thus provides new perspectives for the production of algal biomass, upstream of biotechnology applications. Cell and molecular imaging ; Microalgae ; Molecular mechanisms general public ; Journalists ; Researchers IRIG Scientific result ; Découvertes et avancées Thu, 03 Jun 2021 10:00:00 GMT A hybrid anticancer drug derived from a peptide and an artificial polymer https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/a-hybrid-anticancer-drug-derived-from-a-peptide-and-an-artificial-polymer.aspx In collaboration with the IECB in Bordeaux, a team from the CEA-Joliot has developed a molecule consisting of a hybrid of a peptide and an artificial polymer. This molecule is capable of inhibiting the action of a protein involved in cancers. Structural biology ; Cancer ; Epigenetics ; Molecular mechanisms general public ; Journalists ; Researchers Joliot Découvertes et avancées ; Scientific result Wed, 05 May 2021 10:00:00 GMT Bacteriophages: viruses that expand the genetic alphabet https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/bacteriophages-viruses-that-expand-the-genetic-alphabet.aspx A collaboration involving the CEA-Jacob is lifting the veil on a mystery surrounding certain bacterial viruses: the substitution in their DNA of adenine by another base, aminoadenine. DNA ; Virus general public ; Journalists ; Researchers Découvertes et avancées ; Scientific result Fri, 30 Apr 2021 10:00:00 GMT Accelerating electrons without diverting them using a radially polarized laser https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/accelerating-electrons-without-diverting-them-using-a-radially-polarized-laser.aspx Researchers from the CEA-Iramis and the Laboratoire d’Optique Appliquée (ENSTA/X/CNRS) have succeeded for the first time in efficiently accelerating electrons to relativistic energies using a radially polarized laser. Particle accelerator ; Laser ; Quantum Physics general public ; Journalists ; Researchers Découvertes et avancées ; Scientific result Tue, 27 Apr 2021 10:00:00 GMT Green chemistry and biofuel: the mechanism of a key photoenzyme decrypted https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/Green-chemistry-and-biofuel-the-mechanism-of-a-key-photoenzyme-decrypted-.aspx Green Chemistry ; Chemistry ; 3rd generation biofuel ; Microalgae ; Synchrotron ; Laser ; Molecular mechanisms ; Bioenergy Press release Fri, 09 Apr 2021 10:00:00 GMT Cryo-CMOS electronics for quantum applications https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/cryo-cmos-electronics-for-quantum-applications.aspx Scientists at CEA-Irig, in close collaboration with CEA-Leti, achieved a unique integration of classical electronics with a quantum system. They demonstrate the possibility of measuring current through quantum dots by CMOS circuitry on a single chip cooled to 10 millikelvin, in Fully Depleted Silicon On Insulator (FD-SOI) technology. Micro-nanoelectronics ; Micro-nanotechnologies ; New technologies ; Quantum Physics general public ; Journalists ; Researchers IRIG Scientific result Thu, 25 Mar 2021 11:00:00 GMT Fortunately enough, a high resistance does not make a superconducting Josephson junction insulating! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/fortunately-enough-a-high-resistance-does-not-make-a-superconducting-josephson-junction-insulating.aspx Researchers from CEA-Iramis and their partners refute a widely accepted assertion that the coupling of a Josephson junction to a high resistance is constrained. They thus open the way to new high-impedance devices, previously considered unfeasible. Quantum Physics ; Micro-nanoelectronics ; Micro-nanotechnologies ; New technologies general public ; Journalists ; Researchers Iramis Scientific result Thu, 11 Mar 2021 11:00:00 GMT Quantum science: when an artificial atom makes a microwire oscillate https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/quantum-an-artificial-atom-sets-a-micro-wire-in-motion.aspx A collaboration involving CEA-Irig has succeeded in setting in motion an 18-µm-long mechanical oscillator by optically exciting an embedded artificial atom. This result is an important step towards the realization of interfaces that connect the quantum and classical worlds. Micro-nanotechnologies ; Photonics ; Quantum Physics ; Laser Journalists ; Researchers ; general public IRIG Scientific result Wed, 24 Feb 2021 11:00:00 GMT One entanglement can hide another! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/one-entanglement-can-hide-another.aspx A theoretical physicist at the IPhT and his partners at the EPFL (Switzerland) and MIT (USA) have just revealed a temporal form of quantum entanglement. For the first time, this has allowed them to demonstrate a very strong entanglement between a photon and a phonon, in a diamond crystal at room temperature. Their experiment makes it possible to probe the coherence of single phonons on very short time scales, which opens the door to the search for materials for ultrafast quantum technologies. Quantum Physics ; Theoretical physics ; Laser general public ; Journalists ; Researchers IPhT Scientific result Fri, 19 Feb 2021 11:00:00 GMT Corrosion models predict the behavior of radioactive waste stored at depth https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/corrosion-models-predict-the-behavior-of-radioactive-waste-stored-at-depth.aspx Using an approach combining experimentation, characterization and multi-scale modeling, researchers from Iramis and their partners from the Direction des énergies and Andra have studied the corrosion of glass and metal in particular conditions of radioactive waste storage. Radioactive waste ; Chemistry ; Materials ; Characterisation general public ; Journalists ; Researchers Iramis Scientific result Wed, 03 Feb 2021 11:00:00 GMT Geochemistry reveals ancient trade in cotton between Arabia and India https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/geochemistry-reveals-ancient-trade-in-cotton-between-arabia-and-india.aspx According to a study carried out by scientists from the LSCE (CEA-CNRS-UVSQ), CNRS and the Muséum national d’histoire naturelle, an isotopic analysis of strontium reveals the Indian origin of archaeological cottons dating from the 2nd-3rd centuries, in southeastern Arabia. Characterisation ; Chemistry ; Environment ; Science & society general public ; Journalists ; Researchers LSCE Scientific result Wed, 27 Jan 2021 11:00:00 GMT “Quantum supremacy” on a laptop computer? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/quantum-supremacy-on-a-laptop-computer.aspx A researcher at the CEA-Irig and his partners have demonstrated that a real (and therefore imperfect) quantum computer is several billion times easier to simulate than a perfect quantum computer! Their conclusion: before increasing the number of quantum bits, it is essential to improve their fidelity. Quantum Physics general public ; Journalists ; Researchers IRIG Scientific result Tue, 12 Jan 2021 11:00:00 GMT New two-dimensional materials for skyrmions https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/new-two-dimensional-materials-for-skyrmions.aspx Researchers from the CEA-Irig and their partners in France and China are proposing a new family of asymmetric, two-dimensional materials that could produce magnetic skyrmions. These “nano-whirlpools” of magnetization hold promise for next-generation magnetic memories. Spintronics ; Micro-nanotechnologies ; Quantum Physics general public ; Journalists ; Researchers IRIG Scientific result Thu, 17 Dec 2020 11:00:00 GMT When an electron submerged in the Fermi Sea resurfaces... https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/when-an-electron-submerged-in-the-fermi-sea-resurfaces--.aspx Researchers at Iramis and their partners have succeeded in following the fate of single electrons injected into one-dimensional electronic channels of the quantum Hall regime. These electrons “dissolve” in collective excitations distributed across all parallel channels, and can reappear as a result of constructive interference between these excitations. This is a step forward in the understanding of electron quantum optics. Micro-nanoelectronics ; Micro-nanotechnologies ; Quantum Physics general public ; Journalists ; Researchers Iramis Scientific result Wed, 16 Dec 2020 11:00:00 GMT In-Pb anodes for use with Mg-ion batteries https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/in-pb-anodes-for-use-with-mg-ion-batteries.aspx A team from the CEA-Iramis has developed a new negative electrode material for Mg-ion batteries, based on the compound In-Pb. The synergistic action of indium and lead favors a high electrical capacity, to the detriment of the material’s reversibility, which needs to be further investigated. Batteries ; Chemistry ; Energy storage general public ; Journalists ; Researchers Iramis Scientific result Mon, 14 Dec 2020 11:00:00 GMT A new process for making antibacterial food films https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/a-new-process-for-making-antibacterial-food-films.aspx Chemists working at Iramis and their partners have developed a new process for producing an antibacterial food film. Chemistry ; Technologies ; Innovation for industry general public ; Journalists ; Researchers Iramis Scientific result Mon, 09 Nov 2020 11:00:00 GMT See the technology of tomorrow’s OLED screens emerge https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/see-the-technology-of-tomorrows-oled-screens-emerge.aspx The CEA, working with ENS Paris-Saclay, and the universities of Rennes and San José (USA), has developed new light-emitting molecules with properties that improve the energy consumption and light production of organic light-emitting diodes (OLEDs). This is the first study correlating the structure and properties of this type of material, which has a promising future in display technologies Chemistry ; Photonics ; New technologies general public ; Journalists ; Researchers DRF Scientific result Thu, 22 Oct 2020 10:00:00 GMT A single photon takes two optical paths by “entangling” them! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/a-single-photon-takes-two-optical-paths-by-entangling-them.aspx An IPhT researcher and his partners from the Universities of Geneva and Basel have succeeded for the first time in “entangling” the outputs of two optical fibers sharing a single photon at a distance of 2 km. In this amazing feat, they show how a form of quantum entanglement that is simple to produce can be distributed and then detected over long distances. This is an important step towards the construction of a secure quantum internet! Quantum Physics ; Fundamental Research ; Communications general public ; Journalists ; Researchers IPhT Scientific result Fri, 02 Oct 2020 10:00:00 GMT Hydrogen isotopes in the race for new drugs https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/Hydrogen-isotopes-in-the-race-for-new-drugs.aspx Isotopic labeling remains essential for monitoring the in vivo fate of drug candidates. CEA-Joliot researchers have developed high-performance deuterium and tritium labelling techniques. Pharmacology ; Chemistry Companies ; general public ; Institutions ; Journalists ; Researchers Joliot Scientific result ; News Mon, 28 Sep 2020 10:00:00 GMT Quantum physics: adding “noise” as a means to completely secure communication https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/quantum-physics-adding-noise-as-a-means-to-completely-secure-communication.aspx How can the confidentiality of communications be protected if we cannot absolutely trust the devices used to communicate? Researchers from the IPhT, the University of Basel and the ETH Zürich are addressing this question, which is at the heart of quantum cryptography research. Communications ; Quantum Physics general public ; Journalists ; Researchers IPhT Scientific result Wed, 23 Sep 2020 10:00:00 GMT Nanovectors in radiotherapy: how to optimize the polymer crown of gold nanoparticles https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/nanovectors-in-radiotherapy-how-to-optimize-the-polymer-crown-of-gold-nanoparticles.aspx With the help of X-ray and neutron scattering measurements of model nanoparticles, a team from the Iramis is developing recommendations for the use of functionalized gold nanoparticles in anticancer therapy: the polymer crown must be made from hydrophobic, positively charged monomers. Micro-nanotechnologies ; Nanomedicine ; Diagnosis and innovative treatment ; Chemistry general public ; Journalists ; Researchers Iramis Scientific result Fri, 28 Aug 2020 10:00:00 GMT Anisotropic functionalization of gold nanoparticles assisted by surface plasmons https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/Anisotropic-functionalization-of-gold-nanoparticles-assisted-by-surface-plasmons.aspx Researchers at the CEA-Iramis and their partners have locally grafted organic molecules onto gold nanoparticles, using two photopolymerization steps. This new flexible functionalization technique can be used for applications ranging from biosensing to photonics. Photonics ; Micro-nanotechnologies ; Chemistry ; Laser ; Diagnosis ; Innovation for industry general public ; Journalists ; Researchers Iramis Scientific result Wed, 05 Aug 2020 10:00:00 GMT Methanol synthesis as part of the circular economy of carbon and silicon https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/Methanol-synthesis-as-part-of-the-circular-economy-of-carbon-and-silicon.aspx Chemists at Iramis have proposed a new pathway for the catalytic synthesis of methanol from a formic acid derivative – a waste product of the silicon industry – whose by-products can be recycled. This is a high-yield, sustainable and environmentally friendly process that can be used for energy storage and fine chemistry! Chemistry ; Recovery of CO2 ; Innovation for industry general public ; Journalists ; Researchers Iramis Scientific result Wed, 15 Jul 2020 10:00:00 GMT Cooling electron spins with microwave photons https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/cooling-electron-spins-with-microwave-photons.aspx 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. Spintronics ; Quantum Physics general public ; Journalists ; Researchers Iramis Scientific result Mon, 15 Jun 2020 10:00:00 GMT Highly controlled radical chemistry https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/Highly-controlled-radical-chemistry.aspx The CEA-Irig (IBS) has reported in Nature Catalysis a review on SAM proteins, a type of catalyst that produces highly reactive radical species. Chemistry ; Bio-inspired catalysis Companies ; Institutions ; Journalists ; Researchers IRIG Scientific result Wed, 03 Jun 2020 10:00:00 GMT Separation chemistry: a step toward greener metal recycling processes https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/Separation-chemistry-a-step-toward-greener-metal-recycling-processes.aspx Fundamental Research ; Environment ; Dismantling ; Chemistry ; Materials News ; Press release ; Focus Tue, 25 Feb 2020 11:00:00 GMT Detecting trace amounts of uranium in water https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/detecting-trace-amounts-of-uranium-in-water.aspx The Captot heavy metal sensor, developed by the Iramis-LSI over the last ten years, could be used to detect traces of uranium in water. This would be a simple, rapid field solution to monitor the environment, for example during the cleanup and dismantling of nuclear facilities. Chemistry ; Environment ; Remediation ; Radioactivity ; Materials ; Technologies ; Innovation for industry general public ; Journalists ; Researchers Iramis Scientific result ; Industrial partnerships Thu, 09 Jan 2020 11:00:00 GMT Fractional charge carriers make some noise with photons! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2019/fractional-charge-carriers--make-some-noise-with-photons.aspx Researchers from CEA-Iramis have designed a new experimental method using microwave photons that brings additional proof that the electrical charge of carriers may amount to a third or a fifth of the elementary charge of the electron. Moreover, the experiment shows that these fractionally charged carriers (called “anyons”) interact with microwave photons and can therefore be manipulated. This discovery is the first step towards the study of anyons’ quantum and statistical properties. Fundamental Research ; Micro-nanoelectronics ; Quantum Physics general public ; Journalists ; Researchers Iramis Scientific result Mon, 29 Apr 2019 13:03:55 GMT Superconductivity: let’s shake correlated electrons! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2019/superconductivity-lets-shake-correlated-electrons.aspx Theoretical physicists from the IPhT designed a model of a system of highly correlated electrons subjected to a periodic disturbance. This model could be the first step towards the creation of superconducting materials maintaining room temperature, illuminated by a femtosecond laser… Fundamental Research ; Quantum Physics ; Theoretical physics Journalists ; Researchers ; general public IPhT Scientific result Mon, 08 Apr 2019 10:00:00 GMT A “physicochemical” focus on promising therapeutic molecules https://www.cea.fr/drf/english/Pages/News/Scientific-results/2018/A-physicochemical-focus-on-promising-therapeutic-molecules.aspx Certain polyoxometallates are molecules that show promise for the treatment of cancer or Alzheimer’s disease. A team from the Institut de chimie séparative at Marcoule and the University of Regensburg has analyzed their remarkable behavior in aqueous environments with respect to polar surfaces and has found numerous applications in biology as well as materials science. Chemistry Researchers ; general public ; Journalists DSM Scientific result Fri, 23 Mar 2018 11:00:00 GMT C’mon electrons, let’s do the twist! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2018/C’mon-electrons,-let’s-do-the-twist!.aspx Chemistry ; Physics ; Molecular mechanisms Press release ; Scientific result Tue, 20 Feb 2018 11:00:00 GMT Formates work their way into silicon chemistry https://www.cea.fr/drf/english/Pages/News/Scientific-results/2018/Formates-work-their-way-into-silicon-chemistry.aspx Hydrosilanes are essential chemical compounds for the silicon chemical industry. A team from the Iramis has shown that they could be advantageously replaced by silyl formates, which are potentially regenerable at will from formic acid, a substance that can be synthesized by recycling CO2. Chemistry Researchers ; general public ; Journalists Iramis Scientific result Mon, 22 Jan 2018 11:00:00 GMT Biocompatible chemistry and the medicine of tomorrow https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/biocompatible-chemistry-and-the-medicine-of-tomorrow.aspx Two teams from the Institut Frédéric-Joliot and their partners have discovered a chemical reaction that allows the binding or breaking of molecules in biological environments. Chemistry ; Pharmacology ; Medical imaging Researchers ; general public ; Journalists Joliot Scientific result Thu, 21 Dec 2017 11:00:00 GMT Discovery of a New Biomarker of Aging in Humans https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/discovery-of-a-new-biomarker-of-aging-in-humans.aspx In collaboration with the François-Jacob Institute and scientists from Germany, scientists from the Frédéric-Joliot Institute have identified a biomarker of senescence in human tissues. Their finding provides new clues on how to mitigate the effects of aging. DNA Researchers ; general public ; Journalists Joliot Scientific result Mon, 04 Dec 2017 16:11:10 GMT An Antireflextion Layer to Observe Two-dimensional Nanomaterials https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/an-antireflextion-layer.aspx A team from IRAMIS has implemented a new optical microscopy technique to observe two-dimensional nanomaterials with unprecedented sensitivity and monitor their chemical functionalization in real time. Their work creates a particularly promising route for biodetection. Chemistry Researchers ; general public ; Journalists Iramis Scientific result chimie;nanocaractérisation;microscopie;biodétection;fonctionnalisation;nanomatériaux bidimensionnels; Mon, 04 Dec 2017 15:53:51 GMT A new player does its rounds in the realm of the genome https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/a-new-player-does-its-rounds-in-the-realm-of-the-genome.aspx Researchers from the BIG have revealed the functions of specific RNAs that intervene during protein production. These circular molecules have more than one trick in their bag. Epigenetics ; Vegetal physiology Researchers ; general public ; Journalists BIG Scientific result Mon, 04 Dec 2017 11:00:00 GMT From Vegetable Oils to Oleoactives® 2.0 https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/From-Vegetable-Oils-to-Oleoactives® 2.0.aspx Researchers from joint laboratory VECT'OLEO (Marcoule Institute for Separative Chemistry, Hallstar-France) have used an experimental model system and computer simulations to study the structuration of a vegetable oil and optimized it for the extraction and dispersing of bio-active molecules applied to cosmetics. Chemistry Researchers ; general public ; Journalists DRF Scientific result Wed, 11 Oct 2017 10:00:00 GMT Into the Drama of an Ion Pair https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/into-the-drama-of-an-ion-pair.aspx For the first time, IRAMIS researchers have isolated complex ion pairs in the gas phase and were able to characterize them using UV and infrared spectroscopy. This original experimental approach will deepen the scientists' understanding of extremely diverse physicochemical processes in media as varied as biological cells and batteries. Chemistry Researchers ; general public ; Journalists Iramis Scientific result cellule;paire ionique;spectroscopie;Complexe;batterie; Wed, 30 Aug 2017 10:00:00 GMT Childhood Leukemia: an Epigenetic Factor Involved https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/childhood-leukemia-an-epigenetic-factor-involved.aspx A team from the François-Jacob Institute of Biology at CEA has highlighted the involvement of a micro-RNA in certain pediatric leukemias. Epigenetics ; Cancer Researchers ; general public ; Journalists Jacob Scientific result Tue, 27 Jun 2017 10:00:00 GMT Stopping Pathogenic Fungi https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/stopping-pathogenic-fungi.aspx The work by an international collaboration involving IBS and CEA-BIG has led to the discovery of a protein necessary for the survival of pathogenic fungi. Their work could lead to the development of a new antifungal therapeutic strategy. Infectious diseases ; DNA ; Structural biology Researchers ; general public ; Journalists BIG Scientific result Fri, 16 Jun 2017 14:00:00 GMT A Supramolecular Big Bang https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/a-supramolecular-big-bang.aspx Chemists from ICSM have provided evidence of an atypical transition in a system of surfactant molecules in an aqueous solution: “large” hollow spheres (vesicles) evolve toward “small” solid spheres (micelles) as concentration increases. A sort of “Big Bang” due to electrostatic repulsion between vesicles leads to their explosion into micelles. This could offer new opportunities for drug encapsulation and vectorization. Chemistry Researchers ; general public ; Journalists DRF Scientific result micelles;molécules tensioactives;vectorisation de médicaments;Vésicules; Sun, 21 May 2017 07:00:00 GMT Non-unitary Quantum Mechanics https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/non-unitary-quantum-mechanics.aspx Theoretical physicists from IPhT have advanced the understanding of non-unitary field theories, in particular by using recent mathematical results relating to "non-semi-simple associative algebras." Their work has potential applications in, among other things, the delocalization transition in the entire quantum Hall effect. Fundamental Research ; Physics ; Mathematics Researchers ; general public ; Journalists DRF Scientific result mécanique quantique;théorie des champs;effet Hall quantique;physique théorique;théorie non-unitaire;algèbre; Wed, 17 May 2017 10:00:00 GMT Photovoltaics: What Happens to Excess Energy? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/photovoltaics-what-happens-to-excess-energy.aspx In a solar cell, the absorption of photons with energy exceeding the absorption threshold results in excess energy. But how is this excess energy dissipated? Researchers from IRAMIS answered this question by developing concepts that could facilitate the description of other semiconductors. Physics ; Materials ; Solar energy ; Simulation & modelling general public ; Journalists ; Researchers Iramis Scientific result Mon, 10 Apr 2017 10:00:00 GMT Toward a Better Understanding of Ionic Conductivity in the Electrolyte https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/toward-a-better-understanding-of-ionic-conductivity-in-the-electrolyte.aspx An international collaboration led by institutes INAC and LITEN shows that lithium ions interact with the electrolyte in very different ways depending on the anion content. This is an essential finding for improving the performance of lithium-ion batteries. Energies ; Chemistry general public ; Journalists ; Researchers Inac Scientific result Thu, 09 Feb 2017 11:00:00 GMT Reaching for the Moon to Determine the Nature of Saturn's Central Core https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/reaching-for-the-moon-to-determine-the-nature-of-saturn-central-core.aspx Based on analysis of several thousands of images of Saturn's moons produced by the Cassini spacecraft (NASA/ESA) a research team was able to provide the first quantification of minuscule fluctuations in the gravitational field of this planet. These extremely fine results should allow for a better understanding of the internal structure of Saturn. Physics ; Astrophysics general public ; Journalists ; Researchers Irfu Scientific result Wed, 11 Jan 2017 11:00:00 GMT How does a mobile DNA sequence find its target? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2015/How-does-mobile-DNA-sequence-find-target.aspx Certain mobile DNA sequences shape genomes and are maintained over the course of generations. How is this explained? The interaction between two proteins, which is essential for their integration into a specific area of the yeast genome, has been identified. This finding has interesting implications for gene therapy. DNA ; Gene and cell therapy Saclay Scientific result Fri, 01 May 2015 10:00:00 GMT The dance of water https://www.cea.fr/drf/english/Pages/News/Scientific-results/2015/dance-of-water.aspx An international team involving the IBS has just demonstrated the role that water has on the activity of proteins at the molecular level. The researchers discovered how the movement of water molecules is involved on the surface of proteins in order to make them dynamic and therefore functional. Structural biology ; Molecular mechanisms Grenoble Scientific result ; European & international partnerships Mon, 16 Mar 2015 11:00:00 GMT Targeting ALT to fight certain cancers https://www.cea.fr/drf/english/Pages/News/Scientific-results/2015/Targeting-ALT-to-fight-certain-cancers.aspx The collaboration between American laboratories and a team from the CEA-IRCM has shown in vitro that inhibitors of the enzyme ATR specifically kill the cells of certain types of cancer. Cancer ; DNA Fontenay-aux-Roses Scientific result Fri, 23 Jan 2015 11:00:00 GMT The normal prion protein protects DNA https://www.cea.fr/drf/english/Pages/News/Scientific-results/2015/The-normal-prion-protein-protects-DNA.aspx Notorious in its abnormal form, the normal prion protein is present in all mammals, although its role is unknown. A team from the CEA-IRCM has just shed some light on this. Stress response ; DNA ; Neurodegenerative diseases Fontenay-aux-Roses Scientific result Fri, 23 Jan 2015 11:00:00 GMT Performing chemistry within the cell https://www.cea.fr/drf/english/Pages/News/Scientific-results/2014/Performing-chemistry-within-the-cell.aspx Researchers from the CEA-IBITECS in collaboration with a team from the University of Strasbourg (UDS) have developed new reagents known as “chelating azides”, which can rapidly and selectively couple to any compound equipped with an alkyne group. The reaction can take place in any environment, including within a cell. Chemistry ; Methodologies for life sciences Saclay Scientific result Tue, 06 May 2014 10:00:00 GMT DBV Technologies and the CEA collaborate in the treatment of allergies https://www.cea.fr/drf/english/Pages/News/Scientific-results/2014/DBV-Technologies-and-the-CEA-collaborate-in-the-treatment-of-allergies.aspx DBV Technologies, creator of the Viaskin® patch for allergy treatment, has signed a collaborative agreement with the Centre National de Génotypage of the CEA-IG, to understand the epigenetic mechanisms of this treatment. Epigenetics Fontenay-aux-Roses Industrial partnerships Wed, 09 Apr 2014 10:00:00 GMT Heredity is not only genetic https://www.cea.fr/drf/english/Pages/News/Scientific-results/2014/Heredity-is-not-only-genetic.aspx A study conducted by an international team, notably involving researchers from the CEA-IG (Genoscope), provides first-time evidence that measurable heritability may be based on epigenetic variations and not necessarily on variations in the DNA sequence. Epigenetics ; Large-scale biology IG Scientific result Sat, 08 Feb 2014 11:00:00 GMT Quantum dot: a promising new imaging agent https://www.cea.fr/drf/english/Pages/News/Scientific-results/2013/Quantum-dot-a-promising-new-imaging-agent.aspx The drawback to current optical imaging markers is their short life. Researchers are now developing fluorescent nanocrystals (quantum dots) to supplant these markers. A team from the CEA-iBiTec-S, in collaboration with the CEA-I2BM and ESPCI, has developed a new surface chemistry for these particularly effective nanoparticles. Cell and molecular imaging ; Nanomedicine ; Chemistry Fontenay-aux-Roses Scientific result Fri, 22 Mar 2013 11:00:00 GMT