Résumé : The internship aims at studying ultrafast electron dynamics in semiconducting crystals during their interaction with a strong femtosecond laser. More specifically, the objective will be to obtain the attosecond temporal structure of the resulting emission, direct signature of those dynamics.
Résumé : During this training, the student will set up, on an intense femtosecond laser, an interferometric device to study, during the generation of attosecond pulses, the couplings between angular orbital moment and spin angular moment of light. This experimental training will require concepts of nonlinear optics, quantum optics and laser-matter interaction.
Résumé : This internship is part of a research project, funded by the french Agency ANR, whose purpose is to probe the carrier dynamics in solids with ultimate femtosecond and sub-femtosecond resolution, by developing new optical pump-probe methods on the Equipex Attolab, at LOA (ENSTA) and at L’Orme des Merisiers (CEA- Université Paris Saclay).
Résumé : M1 or M2 level internship: The project consists in the synthesis and the characterization of polymer nanoparticles from amphiphilic copolymers with one radiosensitive block. The other issue is to form metal nanoparticles (radiosensitizing effect) with a polymer corona. The objective is then to incorporate drugs inside these objects (by hydrophobic interactions or covalent grafting).
Résumé : The synthesis of yttrium vanadate nanoparticles in water is characterized by the transient existence of an amorphous network that appears within the first few ms, prior to crystal nucleation. In order to track the appearance of this transient network, we will carry out microfluidic syntheses using a device which allows mixing salt solutions in a few 100 µs, as well as on-chip x-ray scattering measurements.
Résumé : One of the route the Intergovernmental Panel on Climate Change strongly encourages to capture atmospheric CO2 is the use of liquid amines, followed by recovery and deep underground storage. But the CO2 recovery step is currently too energy consuming. We aim at understanding how the addition of nanoparticles can meet a carbon-efficient recovery.
Résumé : The aim of the internship is to study the magnetoresistive magnetic sensor integration in flexible cantilever on their performances. The sensors, destinated to be integrated in a scanning microscope, will be microfabricated in clean room and characterized in terms of magnetotransport and noise.