7 Feb 2024
Job Information
- Organisation/Company
CNRS- Department
Laboratoire du Futur- Research Field
Chemistry » Physical chemistry
Physics » Chemical physics
Physics » Biophysics- Researcher Profile
First Stage Researcher (R1)- Country
France- Application Deadline
27 Feb 2024 - 23:59 (UTC)- Type of Contract
Temporary- Job Status
Full-time- Hours Per Week
35- Offer Starting Date
1 Apr 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
Unlike other large life forms such as mammals, the functioning of vascular plants is not based on an active pump such as the heart to make the different organs communicate with each other, but passively exploits the gradients of water chemical potential, ψ, and two coupled vascular systems, xylem and phloem, with microfluidic transverse dimensions (10-100 μm) and lengths that can reach several tens of meters for the largest trees. More specifically, evapotranspiration moves water
contained in the soil up to its vapor phase in the atmosphere, through the xylem connecting the
roots to the leaves to maintain plant hydration. At the same time, carbohydrates, mainly sugars,
photosynthesized in the mesophyll cells of the mature leaves are transported through the phloem
by forward osmosis to the sink sites (flowers, immature leaves, roots, etc.), for plant growth and
storage.
Within the framework of a collaborative and interdisciplinary ANR project with Cornell University
(PI: Abraham Stroock, Chemical Engineering, in collaboration with Margaret Frank, Plant Biology),
we wish to better understand the mechanisms of these vascular transports, and more precisely the
coupling between evapotranspiration and the transport of sugars in the phloem, and their
dynamics. The project proposed in this contract aims at developing original microfluidic tools to
mimic and study these transport processes. As a first step, we propose to use recently developed
photopatterning techniques [1] to integrate hydrogel membranes with tunable properties into
custom microfluidic chips. We also plan to integrate recently developed fluorescent nanogels
sensitive to water potential ψ [2] into these chips to probe the latter in situ. These techniques will
then be used to mimic transport by evapotranspiration (at negative pressure) and possibly
transport by osmosis through hydrogel membranes.
The "Laboratory of the future" - LOF is a research unit affiliated to the CNRS, the University of Bordeaux and Syensqo (a chemical industry company dedicated to the development of advanced materials). LOF's vocation is to increase the productivity of R&D projects through the implementation of high-throughput methodologies such as microfluidics and robotics. Located in Pessac, the laboratory is part of a Syensqo research and innovation centre and brings together a team of around twenty researchers from both academic and industrial backgrounds.
For this project, an active collaboration with Cornell university is planned, including a long stay in the USA.
Requirements
- Research Field
- Chemistry
- Education Level
- PhD or equivalent
- Research Field
- Physics
- Education Level
- PhD or equivalent
- Research Field
- Physics
- Education Level
- PhD or equivalent
- Languages
- FRENCH
- Level
- Basic
- Research Field
- Chemistry » Physical chemistry
- Years of Research Experience
- None
- Research Field
- Physics » Chemical physics
- Years of Research Experience
- None
- Research Field
- Physics » Biophysics
- Years of Research Experience
- None
Additional Information
Eligibility criteria
We are looking for a candidate holding a PhD in soft matter physical chemistry with a strong
experience in microfluidic development and an interest in transport phenomena and
interdisciplinary projects.
- Website for additional job details
https://emploi.cnrs.fr/Offres/CDD/UMR5258-JEAGIM-026/Default.aspx
Work Location(s)
- Number of offers available
- 1
- Company/Institute
- Laboratoire du Futur
- Country
- France
- City
- PESSAC
- Geofield
Where to apply
- Website
https://emploi.cnrs.fr/Candidat/Offre/UMR5258-JEAGIM-026/Candidater.aspx
Contact
- City
PESSAC- Website
http://www.lof.cnrs.fr/
STATUS: EXPIRED
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