6533b7d6fe1ef96bd126686e
RESEARCH PRODUCT
Modelling nanoparticles formation in the plasma plume induced by nanosecond pulsed lasers
M. GiraultM. GiraultValérie PotinM.c. Marco De LucasL. LavisseL. HalloL. HalloDavid HebertJean-marie Jouvardsubject
Materials scienceNanostructureGeneral Physics and AstronomyNanoparticlePhysics::Optics02 engineering and technology01 natural sciencesMolecular physicsElectromagnetic radiationlaw.inventionlawPhysics::Plasma Physics0103 physical sciencesABLATIONPhysics::Atomic Physics010302 applied physicsbusiness.industryCondensationSurfaces and InterfacesGeneral ChemistryPlasmaNanosecond021001 nanoscience & nanotechnologyCondensed Matter PhysicsLaserSurfaces Coatings and FilmsPlumeOptoelectronics0210 nano-technologybusinessdescription
International audience; Nanoparticles formation in a laser-induced plasma plume in the ambient air has been investigated by using numerical simulations and physical models. For high irradiances, or for ultrashort laser pulses, nanoparticles are formed by condensation, as fine powders, in the expanding plasma for very high pairs of temperature and pressure. At lower irradiances, or nanosecond laser pulses, another thermodynamic paths are possible, which cross the liquid-gas transition curve while laser is still heating the target and the induced plasma. In this work, we explore the growth of nanoparticles in the plasma plume induced by nanosecond pulsed lasers as a function of the laser irradiance. Moreover, the influence of the ambient gas has also been investigated.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-09-01 |