Job Description

Your tasks

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Your research will explore the mechanisms of ammonia (NH?) adsorption and interfacial proton transfer, focusing on how these processes are influenced by acidic adsorbents (CO?, HONO, HNO?), mineral oxides, and reactive trace gases (NO?, SO?, O?) A central aim is to investigate molecular-level differences between air-water and air-ice interfaces You will design and conduct experiments using coated wall flow-tube reactors, X-ray excited electron spectroscopy at the Swiss Light Source, and sum-frequency generation spectroscopy in collaboration with Boise State University

Your profile

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Brilliant, creative, and motivated - even if your previous research didn't focus on interfaces, snow, or atmospheric science Hold a master's degree in physical chemistry, chemical physics, or a closely related discipline Talented Experimentalist or experienced with analytical field campaigns Curious about molecular-level interfacial processes and eager to develop a predictive understanding A strong communicator in English, able to present results in high-impact journals and at international conferences Experience in low-temperature experiments, spectroscopic methods, and programming for data analysis is beneficial

We offer

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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.

For further information, please contact Dr Thorsten Bartels-Rausch, phone +41 56 310 43 01.


Please submit your application online by

31 December 2025

(including a motivation letter and addresses of referees) for the position as a PhD Student (Index-Nr. 5505-25377).

Paul Scherrer Institute, Human Resources Management, Mariusz Prus, 5232 Villigen PSI, Switzerland