Publication

This is the challenge facing the ANR FULBOX project, led by Bastien Arnal, a CNRS researcher at LIPhy, which aims to develop new tools for imaging biological tissues in depth using photoacoustic imaging techniques.

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.

An international team of researchers from LIPhy (Université Grenoble Alpes / CNRS), the Institut des Molécules et Matériaux du Mans (Le Mans Université / CNRS) and the Technische Universität Darmstadt (Germany) has shown that copper-based nanoparticles (Cu(OH)₂) can degrade bacterial membranes in presence of small amounts of hydrogen peroxide – amounts comparable to those naturally produced by the metabolism of bacterial cells.

A team of researchers from ESPCI Paris (CNRS/PSL/Sorbonne Université) and the Laboratoire Interdisciplinaire de Physique (CNRS/Université Grenoble Alpes) combined high-resolution electrostatic mapping with molecular dynamics simulations to investigate the behavior of these surface-trapped ionic charges. They found that the ionic charges spread across the surface with astonishing mobility. Their two-dimensional diffusion far exceeds that of ions in bulk water, with the limiting factor being the friction between the ionic solvation shell and the solid.

An interdisciplinary team of researchers from Germany and the LIPhy has demonstrated that Tau, a neuronal protein known for stabilizing microtubule tips, plays an active role in modulating microtubule lattice dynamics. The study reveals that Tau significantly accelerates the exchange of tubulin within the microtubule lattice, especially at topological defect sites, despite lacking enzymatic activity. These findings challenge the traditional view of Tau as merely a passive stabilizer, showing instead that it increases lattice anisotropy and, in doing so, actively enhances microtubule lattice dynamics.

A team from LIPhy has studied the transport of CO2 within a liquid foam in contact with the atmosphere and shown how its effective diffusion in the medium emerges from the coupling between the structure of the foam and the transport of the gas through the soap films. This study paves the way for the development of low-cost CO2 filtration systems based on the ability of this main contributor to the greenhouse effect to dissolve more easily in water than most other gases.

LIPhy is taking action to reduce the share of equipment purchases in its CO2 emissions! Over the past year, the laboratory has developed and implemented a new digital tool for sharing equipment: the Matosthèque.

Dental sensitivity is unique in that it is mediated by cells called odontoblasts, located in the dental pulp at the center of the tooth. According to hydrodynamic theory, the activation of odontoblastic processes is linked to the movement of fluids in the dentinal porosity induced by external stimuli. A new study conducted at the Interdisciplinary Laboratory of Physics (LIPhy - CNRS/UGA) shows that this porosity has all the characteristics of a complex network. Far from functioning as independent sensors, odontoblasts could therefore, in theory, adopt collective behaviors that are very different from the simple sum of individual responses.

When light is scattered, how accurately can a measurement result be derived from that light? An international research team has explored the limits of what is possible using artificial intelligence.

A scientific team from Grenoble, involving the Laboratoire interdisciplinaire de physique (LIPhy - CNRS/UGA) and the Centre Inria de l'UGA, has developed a groundbreaking computational model that reveals universal laws governing how creatures swim across vastly different sizes and environments — from microscopic bacteria to massive blue whales.