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Portail > Offres > Offre UMR8552-PIENAC-001 - Post-doctorant.e en études par RMN de diffusion gazeuse dans des matériaux nanoporeux (H/F)

Post-doctoral position in NMR studies of gas diffusion in nanoporous materials

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

Date Limite Candidature : mardi 2 février 2021

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General information

Reference : UMR8552-PIENAC-001
Workplace : PARIS 05
Date of publication : Tuesday, January 12, 2021
Type of Contract : FTC Scientist
Contract Period : 18 months
Expected date of employment : 1 March 2021
Proportion of work : Full time
Remuneration : Ranging from 2728 to 3881 € gross monthly depending on prior experience
Desired level of education : PhD
Experience required : 1 to 4 years

Missions

The recruited person will centrally contribute at Laboratoire Kastler Brossel (ENS-PSL, Paris, France) to a research project carried out jointly with the MRS Laboratory (KFU, Kazan, Russian Federation) on MAgnetic Resonance studies of Gas diffusion In Nanoporous materials (the MARGIN project). Through a detailed characterization of gas diffusion mechanisms in porous media, this research is in particular expected to yield results on the influence of the attractive wall potential on molecular gas dynamics, which is overlooked in standard diffusion models. Additional expected outcomes might be relevant for open questions in fundamental physics in which non-standard magnetic interactions with confining walls are currently revisited.

Activities

With the support of the two permanent members of the Paris research team and in connection with the Russian collaborators the recruited researcher will mainly be in charge or performing NMR and MRI experiments in Paris at low (mT) field and room temperature. Helium-3 will be used as a probe gas and apparent diffusion will be measured in porous systems such as ordered aerogels, nanopowders, etc. The gas will be hyperpolarised with laser optical pumping for high sensitivity. The main activities will therefore include the preparation of measurement cells contaning the porous samples (from Russia), the polarisation of helium-3 gas using the in-house polarising system, the design and management of NMR sequences (with a Tecmag console), and the post-processing of acquired date. It is also expected that numerical simulations of restricted diffusion based on existing codes will be useful to fully interpret results. Finally, the recruited researcher will contribute to the communication and publication of all results.

Skills

Physicists with prior experience in NMR methodology or instrumentation and/or noble gas hyperpolarisation, or more generally with expertise relevant for this project, are encouraged to apply.

Work Context

Laboratoire Kastler Brossel hosts teams performing research on a wide range of topics, mostly focused on quantum physics and applications. The polarised helium team pursues research both on the physics of noble gas hyperpolarisation and on the use of hyperpolarised gases for applications, especially in low-field NMR and MRI. It has strong collaborative links on these topics with the MRS team in Kazan and also with groups in Germany and Canada and well as in the Paris area.

Constraints and risks

The desired starting date (February or March 2021) may vary depending on the actual Covid pandemic situation in the near future.

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