Missions

We are seeking for a brilliant researcher to start a research project on Acoustic and elastic metamaterials supporting Bound state In the Continuum (BIC) propagation. Our group in the Institut Jean Lamour (IJL), Institution belonging to the University of Lorraine and CNRS, develops since many years different research topics related to acoustic/elastic metamaterials and metasurfaces, both on theoretical and experimental aspects. This has led to some majors achievements in the field of metamaterials [1-4]. In the context of the proposed project, we would like to tackle on broadband acoustic and elastic absorption using BIC.
References :
1. M. B. Assouar, B. Liang, Y. Wu, Y. Li, J-C. Cheng & Y. Jing. Nature Reviews Materials 3, (2018) 460.
2. Y. Li & M. B. Assouar. Appl. Phys. Lett., 108 (2016) 063502.
3. Y. Zhu & M. B. Assouar. Phys. Rev. B, 99 (2019) 174109.
4. S. Qi, Y. Li & M. B. Assouar. Phys. Rev. Applied, 7 (2017) 054006.

Activités

Regarding the project, we propose to theoretically develop and experimentally demonstrate the concept of broadband vibro-acoustic absorption using the exceptional properties of BIC. We, indeed, would like to develop a transformative approach by which we can implement a multifunctional feature into a thin metastructure capable to simultaneously deal with acoustic and elastic waves. To achieve this goal, computational and theoretical platforms will be established in the first part of the project as a first foundation. This will include the development of finite elements methods, as well as inverse design strategies based on deep-learning and Neural Networks approaches. The latter will then bring the project to the experimental track including the conception/design, fabrication and experimental analysis of the BIC metamaterials.

Compétences

To lead this project with its different aspects, we are seeking for a brilliant candidate who has a strong background in at least two of the following fields: physical acoustics, wave physics, applied physics, applied mechanics, acoustics, … He/she should have very good English writing and communication skills. Some fundamentals in computing using deep-learning approaches and inverse design would be a plus.

Contexte de travail

The Institute Jean Lamour (IJL) is a joint research unit of CNRS and Université de Lorraine.
Focused on materials and processes science and engineering, it covers: materials, metallurgy, plasmas, surfaces, nanomaterials and electronics.
The IJL has 263 permanent staff (30 researchers, 134 teacher-researchers, 99 IT-BIATSS) and 394 non-permanent staff (182 doctoral students, 62 post-doctoral students / contractual researchers and more than 150 trainees), of 45 different nationalities.
Partnerships exist with 150 companies and our research groups collaborate with more than 30 countries throughout the world.
Its exceptional instrumental platforms are spread over 4 sites; the main one is located on Artem campus in Nancy.
The project will be carried out within the “Metametarials and Phononics” group whose subjects range from acoustic/elastic metamaterials and Phononics to topological and non-Hermitian metamaterials.

Le poste se situe dans un secteur relevant de la protection du potentiel scientifique et technique (PPST), et nécessite donc, conformément à la réglementation, que votre arrivée soit autorisée par l'autorité compétente du MESR.

Contraintes et risques

/

Informations complémentaires

PhD degree in one of these specialties: acoustics, applied physics, material physics, wave physics, mechanical engineering …
Possibility of contract renewal up to 24 months.