Rencontres Jeunes Physicien.ne.s 2026

Session

Posters

24 avr. 2026, 10:25

Amphithéâtre principal (La Doua)

31. A Traveling-Wave based Ion-Mobility device for isomers selection in InfraRed Multiple Photon Dissociation analysis

PengFei Xu (Université Lyon 1, CNRS, Institut Lumière Matière, UMR5306, F-69100, Villeurbanne, France)

24/04/2026 10:25

In nature, molecular ions with the same mass and charge can exist with various structures. These isomers exhibit different physical or chemical properties. For a better understanding of light-induced processes on molecules, one of the actual challenges is to couple structural analysis of molecular ions with light matter interaction studies. To probe the structure of gas-phase molecular ions,...

30. CO2 Reduction by bio-inspired up-converting photonic structures

Eryk Kupiec (INL)

24/04/2026 10:25

In order to reduce the effect of global warming, the decarbonation of the industry via CO2 capture and valorisation became a well studied topic. In this poster, I shall present the work I will tackle during my PhD, on up-converting photonic crystals for CO2 reduction reaction applications. This poster is a global overview of the physics and chemistry behind, objectives and current work related...

6. Experimental study of the optical response of gold nanobipyramids used as photoelectrochemical electrodes

M. Youn NOH (Institut Lumière Matière (iLM))

24/04/2026 10:25

Gold nanoparticles are a versatile tool for probing and monitoring their local environment. On the one hand, they exhibit optical extinction dominated by Localised Surface Plasmon Resonance (LSPR) whose spectral maxima and width are sensitive to their local environment. On the other hand, selective electrochemical reactions can be driven on electrodes with gold nanoparticles deposited on their...

5. Formation et migration d’instabilités à la surface libre d’un lit granulaire immergé

Camille Porceillon (Laboratoire de Physique (ENS de Lyon) & Géosciences Montpellier)

24/04/2026 10:25

Dans cette étude expérimentale, on s’intéresse à l’injection localisée d’eau dans un milieu granulaire immergé (système diphasique). L’état initial est obtenu par sédimentation de grains dans une cellule de Hele-Shaw verticale. De l’eau colorée est ensuite injectée à débit constant en bas de la cellule, au centre, par une buse cylindrique. Une caméra et un panneau lumineux permettent une...

8. Influence of Mantle Rheology on Plume Dynamics, Periodicities and Morphologies

Alexandre Koessler

24/04/2026 10:25

Many hotspots worldwide display evidence of fluctuating magmatic activities that may be linked to time-dependent variations in melt production within mantle plumes. These periodicities are observed globally on Earth, ranging from 1 Myr to 20 Myr [Morrow and Mittelstaedt, 2021 ; Sokolov et al., 2025]. Remarkably, the Réunion hotspot exhibits short magmatic pulsations with a periodicity of ~400...

4. Mechanical Behaviour of Confined Ferromagnetic Granular Media

Solenn Rodriguez (Laboratoire de physique de l'ENS de Lyon)

24/04/2026 10:25

The pressure at the bottom of a container filled with granular material saturates [1], as the silo walls can support part of the grains' weight due to frictional interactions, a phenomenon known as the “Janssen Effect.”

We investigate this effect using ferromagnetic particles: when exposed to a magnetic field, these particles acquire a magnetic moment, leading to anisotropic magnetic...

13. Realistic simulations for cosmology with type Ia Supernovae (SNe Ia).

Luna Dellazzeri (IP2I)

24/04/2026 10:25

SNe Ia are at the center of the actual tensions on H0 and w, parameters characterising the expansion of the Universe. Controlling surveys cross-calibration, selection functions and SNe Ia variability is important to avoid systematic biases in cosmological inference from SNe Ia. Realistic simulations are essential to address these systematics, but existing tools remain limited in their ability...

12. Simulation-Based Inference (SBI) for cosmology with type Ia Supernovae (SNe Ia).

Adam Trigui (IP2I)

24/04/2026 10:25

Systematic uncertainties associated to calibration, selection function and astrophysical effects are dominating the error budget of SN Ia cosmology. Correction methods applied to account for these systematics, and especially for the complex combination of selection function and astrophysical variability, are questionable, particularly given the current H0 and Lambda tensions for which SN Ia...

10. Suface functionalisation of nanoplatelets for detection of biological nanoobjects in water

Maria Bandurist (ILM)

24/04/2026 10:25

Detecting biological objects, such as viruses or proteins, through their mechanical vibrations is possible but remains challenging due to their structural complexity and weak signals1. To overcome these limitations, we propose an indirect detection approach by coupling such biological objects to colloidal nanocrystals acting as mechanical nanoresonators. Here we use CdS nanoplatelets (NPLs),...