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O: Fachverband Oberflächenphysik

O 36: Focus Session: Mineral-water interfaces II

Dienstag, 10. März 2026, 10:30–12:30, HSZ/0403

The Focus Session discusses recent advances in the understanding of mineral-water interfaces. These interfaces are ubiquitous in nature, host of many geological and biological processes, intimately linked to the global carbon cycle, and therefore highly relevant for Earth*s climate. For example, silicate weathering removes carbon dioxide from the atmosphere on geological timescales, acting as a stabilizing feedback mechanism since weathering rates increase with temperature. In the oceans, carbonates dissolve and precipitate in response to changing atmospheric carbon dioxide concentrations, thus far mitigating part of the anthropogenic impact of CO₂ emissions. In addition, numerous industrial and technological processes involve mineral-water interfaces, including seawater desalination, scaling and incrustation prevention, as well as various biochemical applications. However, and despite their importance, many fundamental aspects of mineral-water interfaces remain poorly understood, including water binding and diffusion, structure formation, ice nucleation, growth, or desorption.

This DPG Focus Session will address these aspects at the molecular level, elucidating fundamental processes involving both single water molecules and bulk water in contact with mineral surfaces. The session brings together scientists investigating mineral-water systems under ultrahigh vacuum conditions as well as at mineral-water interfaces in bulk aqueous environments. We aim for a balanced Session with contribution from both renowned experts and young investigators active in the field.

Organized by Philipp Rahe (U Osnabrück), Angelika Kühnle (U Bielefeld), Jan Balajka (TU Vienna), Wolf Gero Schmidt (U Paderborn).

	10:30	O 36.1	Hauptvortrag: Acidity in nanoconfinement from ab initio and NNPs simulations — Anthony Baldo, Muhammad Saleh, Kevin Leung, and •Marialore Sulpizi
	11:00	O 36.2	Ab initio exploration of water clusters on CaF2 — •Isaac Azahel Ruiz Alvarado, Wolf Gero Schmidt, Paul Laubrock, Jonas Heggemann, and Philipp Rahe
	11:15	O 36.3	Surface Structure of Polar Silver Iodide (0001) in Various Liquids: No Indication for a Surface Reconstruction — •Kim Noelle Dreier, Annamaria Latus, Ralf Bechstein, and Angelika Kühnle
	11:30	O 36.4	Hauptvortrag: Living Interfaces: Dissolution and Precipitation Processes at Mineral-Brine Interfaces Revealed by AFM — •Igor Siretanu, Vincenzo Alagia, Saravana Kumar, Shilpa Mohanakumar, Max Nederstigt, Chinmay Shukla, Michel Duits, and Frieder Mugele
	12:00	O 36.5	Water Organization and Speciation at the Calcite (10.4)-Water Interface at High pH — •Tobias Dickbreder, Frank Heberling, and Ellen H. G. Backus
	12:15	O 36.6	The mechanism of selenite incorporation into the calcite surface revealed by atomic-scale imaging — •Marie Luigs, Ralf Bechstein, and Angelika Kühnle