Job offer

European Commission; France; Sur place; EUR 36 000 - 45 000; Plein temps

Résumé du poste

Une opportunité postdoctorale au Laboratoire de Physique des Solides, visant à explorer les propriétés des matériaux composites à phases liquides. Les candidats sont invités à appliquer s'ils possèdent un doctorat en physique des matériaux et une expérience pertinente. Ce projet est au carrefour de la physique, de la chimie physique et de la biologie, favorisant une analyse expérimentale rigoureuse et la collaboration.

Qualifications

• Expérience en rhéologie expérimentale et caractérisation mécanique.
• Intérêt fort pour l'analyse physique rigoureuse et le travail collaboratif.
• Familiarité avec les matériaux à changement de phase est un plus.

Responsabilités

• Caractériser des matériaux composites à phases liquides dispersées.
• Étudier les propriétés mécaniques sous stress thermique.
• Observer in situ la microstructure et étudier les effets de transition de phase.

Connaissances

Physique des matériaux

Analyse physique

Collaboration en équipe

Formation

PhD en physique des matériaux

Description du poste

Organisation/Company CNRS Department Laboratoire de Physique des Solides Research Field Chemistry » Physical chemistry Physics » Chemical physics Physics » Biophysics Researcher Profile First Stage Researcher (R1) Country France Application Deadline 7 Jul 2025 - 23:59 (UTC) Type of Contract Temporary Job Status Full-time Hours Per Week 35 Offer Starting Date 1 Oct 2025 Is the job funded through the EU Research Framework Programme? Not funded by a EU programme Is the Job related to staff position within a Research Infrastructure? No

Offer Description

Composite materials containing a liquid phase dispersed within an elastomeric matrix offer original perspectives for designing systems with tunable mechanical and functional properties. These systems, which lie at the interface between complex fluids and soft materials, are central to numerous applications: phase-change materials (PCMs) for thermal storage or regulation, damping materials, soft sensors, energy dissipation devices, and more.

This postdoctoral project is part of an exploratory study aimed at gaining a better understanding of the relationship between microstructure (distribution, shape, and nature of the liquid or phase-changing inclusions) and the macroscopic mechanical properties of the composite, particularly under mechanical or thermal stress.

The candidate will take part in the multiscale characterization of these materials:

In situ observation of the microstructure,

Rheological and mechanical studies as a function of temperature,

Exploration of phase transition effects (melting/solidification).

Among other goals, this project aims to better understand how phase-change materials (PCMs), when encapsulated or dispersed within solid matrices, influence the overall properties of the composite material.

The Laboratoire de Physique des Solides (LPS) is a joint research unit (UMR 8502) affiliated with Université Paris-Saclay and the French National Centre for Scientific Research (CNRS). It is part of the CNRS Institute of Physics and falls under section 28 of the French National Council of Universities. The LPS is also a member of the Friedel-Jacquinot Federation, which coordinates physics research on the Moulon scientific campus in Orsay (Île-de-France).

The laboratory hosts around one hundred researchers and faculty members, both experimentalists and theorists, supported by a technical and administrative staff of about sixty engineers, technicians, and administrative personnel.

Each year, the LPS welcomes a large number of undergraduate and graduate students—including many PhD candidates—as well as postdoctoral researchers and visiting scientists. Despite its name, the laboratory covers a broader range of topics, spanning the full diversity of condensed matter physics. Research is structured around three main thematic axes, each involving approximately one-third of the scientific staff:

New electronic states of matter

Physical phenomena at reduced dimensions

Soft matter and the physics–biology interface

The first axis brings together experimental and theoretical studies of systems with strong electronic correlations, which give rise to remarkable properties and unconventional electronic states such as superconductivity, magnetism, and metal–insulator transitions.

The second axis encompasses research in the broad field of nanoscience, focusing on fundamental properties that emerge when the size of an object approaches key characteristic lengths (coherence length, mean free path, etc.).

The third axis expands the concept of “soft matter” to include biological systems. Topics range from complex fluids to living tissues, liquid crystals to foams, and polymers to granular systems. This research sits at the crossroads of physics, physical chemistry, and biology.

The postdoctoral research will be carried out within the "Soft Interfaces" group of the Laboratoire de Physique des Solides (CNRS–UMR 8502). The project is funded by the CNRS.

PhD in soft matter physics, mechanics, materials science, or a related field.
Experience in experimental rheology, mechanical characterization, or the physics of complex media.
Familiarity with phase-change materials or thermomechanical phenomena would be a plus.
Strong interest in experimental work, rigorous physical analysis, and collaborative teamwork.