supercritical fluid

What is a supercritical fluid?

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Water, like any chemical substance, can exist in a gaseous, liquid or solid state… but that’s not all! When sufficiently heated and pressurized, it becomes a supercritical fluid, halfway between a liquid and a gas. Jacques Fages, a researcher…
Artificial intelligence

What is artificial intelligence?

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Artificial intelligence (AI) is a hot topic. In late March, the French government organized a series of events dedicated to this theme, the most notable of which was the publication of the report "For a Meaningful Artificial Intelligence," written…
VOC, Volatile organic compound

What is a volatile organic compound (VOC)?

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Pollution in urban areas is a major public health issue. While peaks in the concentration of fine particles often make the news, they are not the only urban pollutants. Volatile organic compounds, or VOC, also present a hazard. Some are carcinogenic,…
eco-material, Gwenn Le Saout, IMT Mines Alès

What is an eco-material?

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Reducing the environmental footprint of human constructions is one of the major issues facing the ecological transition. Achieving this goal requires the use of eco-materials. Gwenn Le Saout, a researcher in materials at IMT Mines Alès, explains…

What is photomechanics?

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How can we measure the deformation of a stratospheric balloon composed only of an envelope a few micrometers thick? It is impossible to attach a sensor to it because this would distort the envelope’s behavior... Photomechanics, which refers…
smart grid

What is a smart grid?

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The driving force behind the modernization of the electrical network, the smart grid is full of promise. It will mean savings for consumers and energy companies alike. It terms of the environment, it provides a solution for developing renewable…
fine particles, Véronique Riffault, IMT Lille Douai

What are fine particles?

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During peak pollution events, everyone is talking about them. Fine particles are often accused of being toxic. Unfortunately, they do not only come out during episodes of high pollution. Véronique Riffault, a researcher in atmospheric sciences…
supply chain management, Matthieu Lauras

What is supply chain management?

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Behind each part of your car, your phone or even the tomato on your plate, there’s an extensive network of contributors. Every day, billions of products circulate. The management of a logistics chain – or ‘supply chain management’ –…
renewable energy storage, stockage énergies renouvelables

What is renewable energy storage?

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The storage of green energy is an issue which concerns many sectors, whether for energy transition or for supplying power to connected objects using batteries. Thierry Djenizian, a researcher at Mines Saint-Étienne, explains the main problems…

What is net neutrality?

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Net neutrality is a legislative shield for preventing digital discrimination. Regularly defended in the media, it ensures equal access to the internet for both citizens and companies. The topic features prominently in a report on the state of…