Postdocs in Probing chemistry at atmospheric interfaces: aerosol research and surface spectroscopy, University

Job description/research project/research area
Aerosol particles play a central role in the formation of clouds. Particles are emitted from a variety of sources or formed in the atmosphere via photochemical reactions. During their atmospheric lifetime aerosol particles undergo “ageing”; chemical reactions and processes that change particle properties and their ability to act as nuclei for cloud formation. 

The two postdocs will work in close collaboration to correlate findings on aerosol properties with the molecular structure of the surface of aerosols and water droplets under different conditions. Eventually, the aim will be to understand how particles and water molecules interact to form clouds. The experiments will be complemented with off-line chemical analysis and molecular modelling with collaborating groups in C3.

Postdoc 1: The first postdoctoral researcher will focus on the generation and characterization of aerosol particles. Key responsibilities include:

• Generate aerosol particles under controlled laboratory conditions that mimic various atmospheric environments. This includes experiments in the AURA atmospheric simulation chamber.
• Develop sampling and interface system to study ultrafast laser spectroscopy studies of the generated aerosols.
• Characterize aerosols using advanced instrumentation to understand the processes of particle "ageing" and their impact on cloud formation.
• Conduct experiments to investigate the role of different environmental factors, such as oxidant conditions, humidity, and temperature, on aerosol properties and the molecular structure of water at particle and droplet surfaces.

Postdoc 2: The second postdoctoral researcher will concentrate on the study of molecular structure at the surface of aerosols and water droplets. Key responsibilities include:

• Assist in development of sampling and interface system to study aerosols using ultrafast laser spectroscopy.
• Employing ultrafast laser spectroscopy techniques, such as sum frequency scattering (SFS) spectroscopy and 2D infrared spectroscopy, to investigate the molecular structure and dynamics at water droplet interfaces.
• Examining how environmental conditions, including varying levels of humidity, temperature, and oxidants, influence the molecular structure of water at aerosol and droplet surfaces.

The project will be carried out within the newly established Center of Excellence: Center for Chemistry of Clouds (C3) in a dynamic and ambitious research environment using excellent experimental facilities for physical and atmospheric chemistry.

Postdocs in our team have the opportunity for collaboration with other students and postdocs within C3 as well as international partners, providing the opportunity for international travel within the research project.

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