PhD Thesis (M/F). Acoustics of droplet impact: between fluid rheology and physicochemistry of solid surfaces
23 May 2024
Job Information
- Organisation/Company
CNRS- Department
Institut des Molécules et Matériaux du Mans- Research Field
Physics- Researcher Profile
First Stage Researcher (R1)- Country
France- Application Deadline
12 Jun 2024 - 23:59 (UTC)- Type of Contract
Temporary- Job Status
Full-time- Hours Per Week
35- Offer Starting Date
1 Oct 2024- Is the job funded through the EU Research Framework Programme?
Not funded by an EU programme- Is the Job related to staff position within a Research Infrastructure?
No
Offer Description
The multidisciplinary nature of this project requires the collaboration of 3 laboratories. The Le Mans laboratories (IMMM and LAUM) bring their experience in the analysis of acoustic signatures of droplet impact on liquid surfaces, including physico-chemical and signal processing aspects. Their expertise is unique: fluid rheology, surface state control and physical chemistry on the IMMM side, instrumentation and acoustic signal analysis on the LAUM side.
CRASH (University of Sherbrooke, Canada) has key competencies in vibroacoustics, vibration imaging and the set-up of controlled test benches. The candidate will spend the 2nd year of the thesis in this laboratory.
Consequentely, the following skills are expected: a strong interest in
- multi-physics experimentation (in particular multi-sensors),
- programming (Python, Matlab...),
- data acquisition and processing.
A knowledge in acoustics would be appreciated. Basic knowledge of the physical chemistry of complex fluids would also be a bonus.
The candidate must hold a Master's degree in one of the following fields of applied physics: acoustics, mechanics, physics, applied physics and engineering physics, fundamental physics and applications, engineering sciences and applications, or in one of the following fields of chemistry: chemistry, chemistry and materials science, physical and analytical chemistry.
General knowledge is required in at least 2 of the 3 following fields (knowledge of acoustics is particularly appreciated, and notions of the physical chemistry of complex fluids would also be a bonus):
- acoustics (source, propagation) and mechanics (vibrations, radiation)
- data processing and analysis (signal, image)
- surface engineering and rheology of complex fluids.
With regard to skills in certain techniques or processes, the candidate will need to demonstrate experience in the following 3 areas:
- multi-sensor instrumentation,
- data acquisition and processing,
- programming (python, matlab...).
Complementary skills, such as a good knowledge of the English language (written and spoken) and the ability to work in multi-disciplinary teams, will be important assets for the candidate.
A drop impacting a solid surface is the stage for a hydrodynamic ballet as fascinating as it is complex. The dynamics of the impact is a subtle balance between interfacial effects, rheology and hydrodynamics that conditions the acoustic field. Yet, the acoustic signals have rarely been addressed.
The aim of this research project is to understand the effects of interfacial and rheological properties on the acoustics of drops impacting a solid surface, both theoretically and experimentally. The strategy is based on the consideration of model plates whose vibratory and acoustic fields can be described analytically (controlled and known boundary conditions). Plates with a rough surface and with surface treatments generated in a controlled way will be used, and the effect of the impact angle will also be evaluated. The goal is to finally link the descriptors of the measured acoustic signals to the physico-chemical and mechanical variables of the problem.
Consequently, the PhD student's activities will mainly concern, in priority order (non-exhaustive list):
- experimental set-up of multi-sensor measurement benches (acoustic, vibratory, optical, thermal, etc.),
- data acquisition, processing and interpretation on measurement benches,
- measurement of rheological properties of complex fluids
- surface and interfacial tension measurements.
Requirements
- Research Field
- Physics
- Education Level
- Master Degree or equivalent
- Languages
- FRENCH
- Level
- Basic
- Research Field
- Physics
- Years of Research Experience
- None
Additional Information
- Website for additional job details
https://emploi.cnrs.fr/Offres/Doctorant/UMR6283-LAZBEN-001/Default.aspx
Work Location(s)
- Number of offers available
- 1
- Company/Institute
- Institut des Molécules et Matériaux du Mans
- Country
- France
- City
- LE MANS
- Geofield
Where to apply
- Website
https://emploi.cnrs.fr/Candidat/Offre/UMR6283-LAZBEN-001/Candidater.aspx
Contact
- City
LE MANS- Website
http://immm.univ-lemans.fr
STATUS: EXPIRED