1 Apr 2024
Job Information
- Organisation/Company
Université Claude Bernard Lyon1- Department
Institut Lumière Matière- Research Field
Physics » Acoustics
Physics » Applied physics
Engineering » Materials engineering- Researcher Profile
First Stage Researcher (R1)- Country
France- Application Deadline
31 Aug 2024 - 12:00 (Europe/Paris)- 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
Ultrasonic energy harvesting has lately been introduced as a promising wireless energy transfer solution to power miniaturized wearable and implantable electronic devices for wireless communication and sensing, remote health monitoring, and ultrasound-induced therapies. However, most current ultrasonic energy harvesters operate using bulky, lead-based piezoelectric materials, which still present major limitations. For instance, they are brittle, inflexible, and contain toxic elements, which limits their wearability and biomedical applications. Moreover, the production and disposal of these inorganic materials pose serious environmental and sustainability challenges.
Plants present a biobased materials’ platform to overcome these challenges due to their piezoelectric behavior. In this project, we aim to design plant-based materials, with enhanced piezoelectricity, for efficient energy harvesting of ultrasonic waves. In order to optimize the electromechanical coupling in these biobased structures, we will exploit the interplay between recently discovered phononic features in plants and existing plant piezoelectricity. In this context, the proposed Ph.D. will focus on identifying phononic features for ultrasonic energy localization in plant-based composite materials and converting plant-based composites into efficient energy harvesters.
As part of this, the Ph.D. student will help implement the necessary tools to:
1) Fabricate and characterize micro-structured cellular membranes made from dehydrated plant scaffolds using soft lithography, optical microscopy, nanometrology (i.e. profilometry, AFM, SEM), and image processing.
2) Measure and analyze the propagation of MHz to GHz ultrasonic waves in the fabricated samples using laser ultrasonics setups and signal processing techniques.
3) Model and evaluate the energy harvesting performance of the designed materials via experimental characterization and numerical modeling of their phononic and piezoelectric behavior, as well as their electromechanical coupling
Requirements
- Research Field
- Physics » Acoustics
- Education Level
- Master Degree or equivalent
Skills/Qualifications
The candidate is expected to have a strong background in acoustics and elastic wave propagation in solids, finite element modeling (preferably in COMSOL Multiphysics), as well as in lasers and the design of optical setups. Knowledge in bioengineering and bio-based materials science, microfabrication, microscopy, and materials characterization using nanometrology and image processing is also highly desirable.
- Languages
- ENGLISH
- Level
- Excellent
- Research Field
- Physics » Acoustics
- Years of Research Experience
- None
Additional Information
Work Location(s)
- Number of offers available
- 1
- Company/Institute
- Institut Lumière Matière
- Country
- France
- City
- Villeurbanne
- Geofield
Where to apply
[email protected]
Contact
- City
Villeurbanne- Website
https://ilm.univ-lyon1.fr/index.php?option=com_content&view=article&catid=94&id=1204- Street
6 rue Ada Byron- Postal Code
69622
[email protected]- Phone
0472448522
STATUS: EXPIRED