By continuing to browse the site, you are agreeing to our use of cookies. (More details)

Doctorant in Micro and Nano Systems Applied to Plant Biology (H/F)

This offer is available in the following languages:
Français - Anglais

Ensure that your candidate profile is correct before applying. Your profile information will be added to the details for each application. In order to increase your visibility on our Careers Portal and allow employers to see your candidate profile, you can upload your CV to our CV library in one click!

Faites connaître cette offre !

General information

Reference : UMR8520-FRELEF-063
Date of publication : Wednesday, July 08, 2020
Scientific Responsible name : The work will be carried out under the joint direction of Lionel Buchaillot and Sébastien Grec.
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 15 September 2020
Proportion of work : Full time
Remuneration : 2 135,00 € gross monthly

Description of the thesis topic

Flax (Linum usitatissimum L.) is an economically important fiber crop in France with a production in 2015 approaching 861 kt natural fibers of which about 84 % is used for fabrics and the rest for composite materials. Its culture occupies 106146 ha for 2018 ha in France and represents 83% of the agricultural surface dedicated to plant fibers. Industrially, the technical fibers must be dissociated from the rest of the stem by a succession of processes including retting, scutching and combing. The retting process is a natural and empiric phenomenon facilitating the separation of fiber bundles from the rest of the stem. The FlaxTronic project aims to improve our understanding of flax retting with a view to develop monitoring smart sensors. The expected result at the end of this multidisciplinary study is the generation of a multi-physical (mechanic, biochemistry, cell imaging) and multiscale toolbox taking into account different factors (e.g. variations in air- and ground-climate, maturity of flax material etc.). This tool will be implemented into autonomous energy sensor networks as decision-making tools for the flax farmer. The project will be carried out jointly with the already funded and ongoing Val (Vegetronic applied to flax) project dedicated to the development of sensors capable of measuring physicochemical parameters on flax stems during retting.

Hereafter is an overview the research content.

During the first year, the study will begin by establishing the state-of-the art and to get familiar with biology and physics specific language as well as experimental methods in each research units. After flax samples have been collected, biological analysis and physical characterization will be performed. Based upon the results, devices will be designed which implies a first modeling stage using analytical and finite element methods.

During the next six months, clean-room training and microfabrication process of the sensors will lead to the delivery of the first prototypes for which calibration and assessment of the selectivity and sensitivity are going to be achieved. This will bring the study to its mid-term.

At this stage, the most relevant approach will be selected to pursue with the second run of fabrication at the end of which a thorough set of experimental testing will be done. In parallel, model development will lead to a better understanding of underlying biological and physical phenomena.

Skills required:

Ability to work in a team at the frontier between scientific disciplines. Writing skills, ability to formulate/work on a scientific project. Ability to work independently, organizational ability and ability to account for one's own actions.
A previous experience in a clean-room environment would be an asset.

Work Context

This thesis will take place within the framework of an "80 Prime" project within two Joint Research Units (IEMN and UGSF) and the thesis will benefit from financial support intended to cover at least partially the costs of equipment, operation and mission.
A previous experience in a clean-room environment would be an asset.

Constraints and risks

A major part of the study required to work in a clean-room environment

We talk about it on Twitter!