Franz M. Geiger

TL;DR: This work describes a newly developed approach for reproducing the chemical complexity of SSA in a laboratory setting, comprising a unique ocean-atmosphere facility equipped with actual breaking waves and shows SSA size and chemical mixing state are acutely sensitive to the aerosol production mechanism, as well as to the type of biological species present.

TL;DR: It is demonstrated that nonlinear optics has now assumed the role of a Swiss Army knife that can be used to dissect, with molecular detail, the fundamental and practical aspects of environmental interfaces and heterogeneous geochemical environments.

TL;DR: Graphene supported on fused silica is subject to cycles of high and low pH, and it is shown that protons transfer reversibly from the aqueous phase through the graphene to the other side where they undergo acid–base chemistry with the silica hydroxyl groups.

TL;DR: The importance of accounting for the interfacial potential-dependent χ(3) term in interpreting spectral lineshapes when seeking molecular information from charged interfaces using second-order spectroscopy is shown.

TL;DR: A change occurs in particle morphology and crystallization behavior associated with increasing organic content for SS-OC particles, and changes with size and seawater composition have important implications for atmospheric processes such as cloud droplet activation and heterogeneous reactivity.