Your tasks
The properties of aqueous solutions representative of atmospheric aerosol particles are important for many aspects related to their impact on human health, air quality and climate. In an interdisciplinary project funded by the Swiss National Science Foundation, we are interested in how transition metals affect photochemical processes of aerosol particles. The basic properties of concentrated aqueous solutions containing both inorganic electrolytes and organic components are playing an important role. You will focus on using X-ray photoelectron spectroscopy (XPS) and electron yield X-ray absorption spectroscopy on such solutions to investigate their surface properties with respect to how inorganic ions and surface active organics interact. In addition, you will engage in in situ Scanning X-ray transmission spectromicroscopy (STXM) to address the spatially resolved chemical composition of single aerosol particles as they undergo realistic processing. You will connect your results with thermodynamic modelling for these solutions and compare to viscosity and surface tension measurements, as well as kinetic results obtained as part of the overall project. There also options to compare the XPS results to theory obtained by collaborating groups.
Your profile
You should have a PhD in physical or environmental chemistry, material science or related field. Previous experience with synchrotron based X-ray spectroscopy is expected, including experience with liquid samples. You should bring interest in a detailed understanding of fundamental properties and processes in the context of atmospheric sciences. You should be motivated to work in an interdisciplinary team.
We offer
Our institution is based on an interdisciplinary, innovative and dynamic collaboration. You will profit from a systematic training on the job, in addition to personal development possibilities and our pronounced vocational training culture. If you wish to optimally combine work and family life or other personal interests, we are able to support you with our modern employment conditions and the on-site infrastructure.
Your employment contract is limited to 2 years.
For further information, please contact Prof. Dr. Markus Ammann, phone +41 56 310 40 49.
Please submit your application online by 23 February 2025 (including list of publications and addresses of referees) for the position as a Postdoctoral Fellow (index no. 5505-00).
Paul Scherrer Institute, Human Resources Management, Mariusz Prus, 5232 Villigen PSI, Switzerland