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Master/ingénieur: Microstructuration de surface par laser ultrabref pour la migration de cellules

Contrôler la migration de cellules dans le système immunitaire est un enjeu clinique majeur. S’appuyant sur les propriétés physiques de déformabilité des cellules (qui leur permettent par exemple de migrer à travers la paroi des vaisseaux sanguins), concevoir des microsystèmes physiques dédiés permet d’envisager un guidage ou un piégeage personnalisé des cellules.
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18 months

Postdoctoral researcher in laser techniques for tissue engineering

The mission of the recruited researcher is to apply the laser processes implemented at LP3 (laser-assisted bioprinting, micro-nano structuring of biopolymers, fabrication of nanoparticles by pulsed laser) to optimize the proliferation, migration and differentiation of stem cells.

High-power laser initiation into detonation of secondary explosives

In order to improve the safety of energetic systems, both in the civil and military domains, detonators containing only secondary explosives have been developed. Some of them are based on optical initiation, to further improve the safety by being immune to electromagnetic environments. These detonators present excellent priming power but are usually slower than their counterparts based on primary explosives. An alternative solution for faster optical initiation would be to use short-pulse high-power lasers. The plasma created by light-matter interaction can indeed generate a shock wave that will propagate inside the target material. It would be interesting to investigate whether this shock can be strong enough for inducing shock to detonation transition in the secondary explosive.
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Ultrafast laser processing : Applications in the mid-IR and THz domains

The main objective of this PhD will be to demonstrate new modalities to enhance the level of controllabity of local laser energy deposition in semiconductors and so their transformations. In particular, the work will explore the introduction of new wavelengths in the mid-infrared and/or THz and strategies based on the temporal shaping of irradiations. The nonlinear processes expected with these approaches should open up new possibilities for tailoring the optical properties inside semiconductor materials (e.g. silicon) and fabricate 3D architectured microdevices.
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