Informations générales
Intitulé de l'offre : Researcher (M/F) to develop optical sensors of ultrasound (H/F)
Référence : UMR7249-THOCHA-008
Nombre de Postes : 1
Lieu de travail : MARSEILLE 13
Date de publication : mercredi 1 octobre 2025
Type de contrat : Chercheur en contrat CDD
Durée du contrat : 12 mois
Date d'embauche prévue : 5 janvier 2026
Quotité de travail : Complet
Rémunération : From 3081 to 4756 euros bruto/month
Niveau d'études souhaité : Doctorat
Expérience souhaitée : Indifférent
Section(s) CN : 08 - Micro et nanotechnologies, micro et nanosystèmes, photonique, électronique, électromagnétisme, énergie électrique
Missions
The aim of this project is to manufacture an optical sensor of ultrasound.
This optical sensor is based on a Fabry-Pérot cavity, whose polymer spacer ensures good sensitivity to ultrasound.
This type of sensor is developed and used in the laboratory as part of a high-resolution, all-optical photoacoustic imaging system.
The sensitivity of current sensors is limited, and the aim is to improve it by nanostructuring the sensitive layer using two-photon photopolymerisation.
Activités
The candidate will be required to:
- identify the structures best suited to both the objectives and fabrication constraints
- fabricate sensor prototypes and coordinate the various partners involved in the multiple stages of manufacturing
- characterise the sensitivity of these sensors and test their operation on an all-optical photoacoustic imaging system
Compétences
The candidate must have a PhD in physics or a related discipline.
Good programming skills (Matlab) and knowledge of Comsol software are recommended. The candidate must have excellent communication skills (both written and oral) and a perfect command of English.
Experience in clean rooms, particularly in two-photon photolithography, is essential.
Contexte de travail
The postdoctoral fellowship will be carried out at the Fresnel Institute, within the Mosaic team, which brings together around 40 researchers and students working on various topics related to optical imaging for biology.
It will involve several collaborators, both within the Fresnel Institute (optical thin film deposition, signal processing, optical component modelling) and outside (polymer deposition and nanostructuring, biological applications).
The candidate will play an active role in strengthening the team's capabilities in the design and manufacture of these sensors, in particular by supervising interns and doctoral students.
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.