UFR de Physique

Propositions de stages en laboratoire -- M2

Les offres sont actualisées en mai. Par exemple, les offres de stages pour l'année universitaire 2015-2016 seront mises en place en mai 2015, les offres de stages pour l'année universitaire 2016-2017 seront mises en place pour en mai 2016, etc.

Investigation of ice nucleation processes triggered by bioaerosols within a cold and humid atmosphere

  • Option International « Atmospheric Environnement » du parcours Lumière-Matière
  • Laboratoire: Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM)
  • Responsable du stage: Claire PIRIM (Claire.Pirim@univ-lille1.fr, 03.20.33.64.70)
  • Co-responsable(s): Bertrand Chazallon
  • Mots clés: soot, micro- Raman spectroscopy, FTIR, nucleation
  • Fiche complète en PDF : Fiche complète en PDF

A 5-month internship is available in the ANATRAC group at the PhLAM laboratory (Physique des Lasers Atomes et Molécules), Univ. Lille (CNRS, UMR 8523), France. The Master’s project will focus on investigating the physicochemical properties of bio aerosol particles using both micro-Raman and Fourier transform infrared spectroscopies and on assessing the ability of such substrates to activate ice formation in deposition and immersion modes. In this master’s project, the analytical efforts will be focused on natural aerosols such as pollens. Because their effect on climate and their subsequent evolution in the atmosphere are closely related to their physicochemical properties, it is necessary to thoroughly study their structure and chemical surface composition so as to determine, ultimately, their influence on the formation of atmospheric clouds or precipitations. The primary objective of this project is thus to study the structure and surface composition of natural aerosols using micro-Raman Spectroscopy and Fourier transform infrared spectroscopy (FTIR). The project will then evolve in determining whether the characterized atmospheric aerosols are able to activate the growth of water droplets or ice crystals (nucleation) depending on the atmospheric conditions surrounding the particles (pressure, temperature, humidity).