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Sujet de stage / Master 2 Internship

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Growth mechanism of luminescent nanoparticles in solution

Contact: CARRIERE David, , david.carriere@cea.fr, +33 1 69 08 54 89
Summary:
The formation of crystals in solution occurs in many processes of natural (rock formation, biominerals...) or synthetic origin (catalysts, concrete, nanomedicine...). This phenomenon still remains poorly undersood; progress is hampered by the difficulty to observe fast phenomena at the nanometer scale.
Possibility of continuation in PhD: Oui
Deadline for application:23/04/2019

Full description:
The goal of the project is to tackle generic questions on the nucleation of oxide nanocristals synthesized in water [Fleury et al., ACS Nano 2014]. Indeed, it is now acknowledged that the current nucleation/growth theories require in many cases a drastic revision [De Yoreo et al. Science 2015]. But progress is hampered by the difficulty to observe nucleation at relevant time- and spatial scales (below 1nm and 1ms).

We are in particular interested with the case of luminescent nanoparticles where the inorganic nanostructure determines crucially the properties for the targed applications: biological probes, precursors for thin films, chemical detection [Casanova et al. Nat. Nanotechnol. 2009].

In this context, we are looking for a master candidate to deal with cutting-edge experimental characterizations, in particular at extremely short reaction times (µs - s) and/or spatial scales (<1nm). In order to progress in this acknowledged difficult question, the candidate will setup structural characterizations by X-ray scattering techniques, chemical characterizations by emission spectroscopy, and microfluidic reactors.

Required skills:

Abstraction skills, easy in experimental physics and/or chemistry, writing and reporting skills
Technics/methods used during the internship:
X-ray scattering in laboratory or synchrotron, luminescence spectroscopy - classical (steady-state) or with pulsed sources, microfluidics

Laboratory
Tutor of the internship

 

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