Conveners
Solids and solid interfaces
- Markus Ammann (PSI - Paul Scherrer Institut)
Solids and solid interfaces
- Luca Artiglia (Paul Scherrer Institut)
Cloud formation, atmospheric chemistry, and human health are influenced by multiphase chemistry at the air-substrate interface of atmospheric particles and ground surfaces (Pöschl and Shiraiwa 2015). All of these impacts are affected by acidity (Angle et al. 2021). A conceptional understanding of interfacial acid-base character has not yet been reached (Saykally 2013). Using X-ray...
I'll present some atmospheric chemistry science cases and options to answer key questions with X-ray excited electron spectroscopy. This talk focuses very much on sample development that mimic atmospheric surfaces and allow systematic studies.
Interfaces have a fundamental role in chemistry because they are the place where most reactions take place. Over the last 20 years, in situ X-ray photoelectron spectroscopy (XPS) has known a huge technological development and now offers the possibility to routinely characterize solid-gas, solid-vapor and solid-liquid interfaces. In situ XPS has joined the surface sensitivity of the technique...
"Alkali feldspar is an important constituent of airborne mineral dust, the major source of primary ice nucleating particles (INPs) in the atmosphere. Some alkali feldspars have particularly high ice nucleation (IN) activity. This phenomenon has been recently ascribed to the ability of (100) planes of alkali feldspar to nucleate ice. However, the structure of feldspar-ice interface is not known...
Small-angle scattering (SAS), including neutron (SANS) and X-ray scattering (SAXS) techniques, enables in-depth examination of particle structure and composition at the nanometer scale, making it highly applicable for atmospheric research. This presentation will introduce the fundamentals of SANS, with a focus on its distinctive advantage of contrast variation, which allows selective...
