Missions

Glass decoration holds significant economic importance, particularly in the Centre-Val de Loire region, where a number of global leaders in the cosmetics and fragrance industries are located. A key challenge for the scientific community is the development of novel materials that offer unique visual aesthetics.

The CEMHTI laboratory (Extreme Conditions and Materials: High Temperature and Irradiation) at CNRS in Orléans is seeking a researcher to contribute to a project focused on optimizing light diffusion in phase-separated glasses. These glasses, characterized by the coexistence of multiple glassy phases, exhibit a nanoparticle-in-matrix structure. Leveraging CEMHTI's established expertise in glass fabrication, we can precisely control the geometric (notably nodule size and concentration) and chemical (composition of the constituent phases) parameters of these heterogeneous materials.

The primary objective is to utilize numerical simulations to determine the geometric parameters that yield desired optical properties. Specifically, the successful candidate will focus on generating iridescence effects tailored to the requirements of our industrial partners. Furthermore, they will employ numerical methods to elucidate the light-matter interaction mechanisms within existing samples, thereby providing a theoretical basis for experimental observations.

Activités

On the software side, he/she will have access to in-house calculation codes for solving Maxwell's equations based on the T-matrix method. On the hardware side, he/she will benefit from extremely powerful calculation servers, one of which is equipped with 4.5TB of RAM.

This work on the design of iridescence properties by phase separation can be completed by the manufacture of glasses resulting from the numerical design, as well as by the optical characterization of the materials obtained.

- Data processing and interpretation.
- Valorization of results through publications and participation in conferences.
- Writing of reports, technical documents and scientific publications.

Compétences

- Doctoral thesis carried out in the field of numerical simulation, wave propagation in complex media or physics/mathematics.
- Proficiency in the computer tools required for data processing, analysis, and simulations;
- Ability to work in a team;

- Effective communication of research results through oral and written presentations and publications;
- Fluency in written and spoken English;
- Ability to plan and execute research projects within specified deadlines.

Contexte de travail

CEMHTI is a CNRS (French National Centre for Scientific Research) research unit located on two nearby sites (High Temperature and Cyclotron) and comprising approximately 100 people. The laboratory develops nationally and internationally recognized expertise and original tools to study, notably in situ, the physico-chemical properties of materials under extreme conditions. The recruited person will be based at the laboratory's High Temperature site and will work within the OR2T "Optics, Thermal Radiation and Transport" and MATRMAG "Materials and Magnetic Resonance" teams.

The application deadline is set for March 26, 2025.

Contraintes et risques

Nothing to report