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CNRS

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Post-doctorant (H/F), Perméabilité photo-commutable d’émulsions aqueuses stabilisées CNRS in France

Degree Level

Postdoc

Field of study

Chemistry

Funding

Available

Deadline

Nov 19, 2026

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Country

France

University

CNRS

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Keywords

Chemistry
Materials Science
Soft Matter Physics
Physics

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About this position

This postdoctoral project at the CNRS explores how to control the permeability of water-in-water emulsions stabilized by self-assembled lyotropic phases at the droplet interface. These emulsions, formed from phase separation in aqueous polymer solutions such as PEG and dextran, are attractive for encapsulation and controlled release of hydrophilic molecules without oil or organic solvent.

The research sits within the ANR SHEILA project and focuses on making interfacial transport stimulus-responsive. The team is investigating lamellar phases that form multilamellar, structured, and initially impermeable membranes around droplets, then studying how structural defects and pores influence the transport of molecular probes. A key goal is to achieve local, fast, and reversible control of permeability using light.

The project will explore photoresponsive surfactants and photoacids to alter interfacial properties and trigger localized permeability changes. A major part of the work will use a recently developed microscopy platform in the laboratory, capable of spatially structured illumination, multi-wavelength control, and precise temperature regulation. The postdoctoral researcher will help program illumination strategies and image-analysis routines to address individual droplets, or even selected regions within a single droplet, and to open or close pores on demand.

The wider scientific context combines soft-matter interfacial physics with functional materials design. The project aims to create controllable droplet-to-droplet exchange, timed microreactors, and quantitative studies of defect nucleation and healing in lamellar phases.

Funding details

Available

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