PhD student (M/F) Ultrasonic wave physics
New
- FTC PhD student / Offer for thesis
- 36 mounth
- Doctorate
This offer is available in English version
This offer is open to people with a document recognizing their status as a disabled worker.
Offer at a glance
The Unit
Institut de mécanique et d'ingénierie
Contract Type
FTC PhD student / Offer for thesis
Working hHours
Full Time
Workplace
33405 TALENCE
Contract Duration
36 mounth
Date of Hire
01/10/2026
Remuneration
2300 € gross monthly
Apply Application Deadline : 10 April 2026 23:59
Job Description
Thesis Subject
“Controlled morphing of deformable materials through spatio-temporal control of ultrasonic wave fronts”
“Morphing” is a special effect applied to the transformation of photographic and cinematographic images in order to create animation. In material and system engineering, the controlled programming of material shapes, both liquid and solid, is also at the basis for many innovations such as 3D printing, biological tissue engineering, and robotics. Sound waves, and their associated “radiation pressure,” can apply average mechanical stresses on an interface, and induce a change of its equilibrium position (see figure below). In this research project, we will explore the potential of using such mechanical effects of sound waves, combined with advanced spatio-temporal control of wave fronts, to direct the contactless and real-time deformation of interfaces into complex three-dimensional shapes.
Job description :
The candidate will study the transformation of initially spherical liquid droplets under the effect of radiation stresses, or “radiation pressure,” from ultrasonic waves (MHz) using both theoretical and numerical models. The models will be validated experimentally in order to develop an original strategy for contactless shape-morphing of deformable materials. The concepts of wave pseudo-momentum and spatio-temporal wavefront shaping will be central to the study. The numerical model will be based on the boundary element method (BEM) and semi-analytical approaches developed at I2M. The experimental proof-of-concept will leverage the advanced capabilities of a new fully programmable research ultrasound scanner to prescribe the desired ultrasound sequence based on the latest advances in spatiotemporal wavefront control.
The project will explore concepts form several topical fields such as:
- Acoustics and interfacial fluid mechanics
- Advanced wavefront control in complex environments
- Experimental instrumentation (Python)
- Signal processing and image analysis (Python)
- Oral presentation of scientific results at meetings and international conferences.
Your Work Environment
Laboratory and working environment:
The research group is part of the Physical Acoustics Department at the Institute of Mechanics and Engineering (I2M) in Bordeaux. The work will be supervised in collaboration with Nicolas Bachelard, a CNRS researcher at the Laboratoire Ondes et Matière d'Aquitaine (LOMA).
Compensation and benefits
Compensation
2300 € gross monthly
Annual leave and RTT
44 jours
Remote Working practice and compensation
Pratique et indemnisation du TT
Transport
Prise en charge à 75% du coût et forfait mobilité durable jusqu’à 300€
About the offer
| Offer reference | UMR5295-DIEBAR-002 |
|---|---|
| CN Section(s) / Research Area | Material and structural engineering, solid mechanics, biomechanics, acoustics |
About the CNRS
The CNRS is a major player in fundamental research on a global scale. The CNRS is the only French organization active in all scientific fields. Its unique position as a multi-specialist allows it to bring together different disciplines to address the most important challenges of the contemporary world, in connection with the actors of change.
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