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Jacques Gierak est ingénieur de recherche CNRS et responsable de la plateforme Instrumentation et sources d'ions au Centre de nanosciences et de nanotechnologie. Il a également oeuvré dans la nanofabrication par faisceaux d'ions focalisés (FIB). Avec ses nombreuses avancées brevetées, il a notamment conçu l'outil FIB Nanowriter, capable de structurer du graphène, un matériau formé d'une seule et unique couche d'atomes de carbone dont les propriétés pourraient trouver des applications dans l…

Ce nouvel épisode d'Un zeste pour la planète nous parle d'éoliennes... Mais surtout d'une machine extraordinaire, qui permet de simuler la rotation de la Terre et ses écoulements atmosphériques pour réaliser des expériences inédites. Un instrument précieux lorsqu'il s'agit d'implanter au mieux des parcs éoliens en haute mer, là où ils sont soumis à diverses forces terrestres...

Antoine Aiello, Nora Dempsey, François Jérôme and Amanda Silva Brun are the four recipients of the CNRS 2021 Innovation Medal. Created 10 years ago, this distinction honours people whose outstanding research has led to significant technological, economic, therapeutic or social innovations that promote French scientific research. From patent filings and pre-maturation programmes for innovative projects, to a joint research laboratory with economic stakeholders and accompanying…

Portrait de Martien Ilse Den Hertog, lauréate de la Médaille de Bronze 2019 du CNRS. Chercheuse en physique des matériaux au sein de l'Institut Néel (DR11), spécialisée dans la microscopie électronique en transmission sur des nano-objets semi-conducteurs.

Can the intonation of somebody's voice tell about their social traits? At IRCAM, researchers conducted experiments to understand how the brain was able to analyse the speech prosody of a speaker, thus demonstrating whether someone is trustworthy or has a domineering attitude towards the person they are talking to. They developed an experimental protocol to understand with which representations in mind one person makes an opinion about the personality of another. Using a phase vocoder, the…

To maximise the safety of an aircraft despite the presence of multiple holes, researchers at LMT-Cachan are trying to understand and control the mechanics of holes. One needs to drill millions of holes to assemble the structures that make up an aircraft to be assembled together, which can create weak points. Several tests are therefore carried out by engineers, who study the resistance of aeronautical materials and structures, to predict how a perforated material will eventually bend. By…

The atomic probe is a unique scientific instrument: it makes it possible to analyze the composition of a material on an atomic scale and to obtain a 3D model of the arrangement of atoms at the heart of matter. Its origins date back to the 1960s, when Erwin Muller (Univ.of Pennstate) developed the ion microscope to observe atoms in their individuality. The evolution of this technique will be linked to the Material Physics Group, founded by Jean Gallot at the University of Rouen. When he came…

How do you cry out "Help!" in caiman language? This is the question Thierry Aubin and Nicolas Mathevon, bioacousticians at the CNRS ask themselves. We travel with them to the marshy plains of Venezuela, where they engage sometimes in sporting experiments: capturing young caimans, recording their cries of distress, then broadcasting them to observe the mothers' reactions. The results obtained provide a better understanding of the evolution of sound communication in the animal world.

On the 8th April 1911, whilst observing mercury at the temperature of liquid helium -269°C, Heike Kamerlingh Onnes discovered a new and surprising physics phenomenon: superconductivity! This phenomenon is made apparent by two remarkable effects. Superconductors not only conduct an electric current perfectly, they also expel magnetic fields and make magnets levitate. A hundred years after its ' discovery, superconductivity still remains a huge enigma. Many laboratories are…

Glue doesn ' t only exist in our daily life : it ' s also an unknown scientific problem. The idea of this film is to make people rediscover something as banal as glue, which is the object of important questionings. A researcher in mechanics, a chemist and a physicist explain its mechanisms.