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Vignette_ARMAGNHAC
Date du contenu
07.11.2025
News

ARMAGNHAC: the first database of hydrogenated amorphous carbons

Hydrogenated amorphous carbons (HACs) are disordered forms of carbon studied in astrochemistry and atmospheric pollution. A new stochastic algorithm has enabled the creation of the ARMAGNHAC database…
Tomo-rheoscopy of a liquid foam.
Date du contenu
05.11.2025
News

Understanding the mechanical response of foams by observing individual bubbles

By observing sheared foam under a time-resolved X-ray tomograph, researchers were able to observe how the rearrangements of bubbles in flow cause the overall mechanical response of the entire system.
Figure: A Brownian particle (subject to thermal agitation) wanders in a confined well until it reaches a threshold, where an automated system (a demon) acts on the position of the well to extract energy from the particle. The cyclical operation of the process creates a temporal information engine between the demon's actions.
Date du contenu
29.10.2025
News

Temporal information: an efficient fuel for a microscopic engine!

Researchers have revisited the famous "Maxwell's demon" experiment, supplementing its description with the temporal information managed by the demon to create a non-equilibrium state. This approach…
Figure : Electrostatic mapping (short times on the left, long times on the right) of surface charges deposited in the wake of a water droplet sliding over a hydrophobic solid. Their lateral diffusion over time reveals remarkably high mobility.
Date du contenu
23.10.2025
News

Ionic puddles: And the ions slided at interfaces

Researchers have recently demonstrated that ions, charged particles most commonly found in solution, can also become confined to the surface of a solid in a hydrated state, forming ‘ionic puddles’…

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