8–15 Oct 2025
Università degli Studi di Roma Tor Vergata
Europe/Rome timezone

Surface Physics Approach to Prebiotic Molecular Aggregation on Mineral Substrates: Focusing on the Earliest Stages

8 Oct 2025, 16:20
20m
Aula Gismondi & Aula Grassano (Università degli Studi di Roma Tor Vergata)

Aula Gismondi & Aula Grassano

Università degli Studi di Roma Tor Vergata

Via della Ricerca Scientifica, 1, 00133 Roma RM

Speaker

Ilaria Tomei

Description

This project explores the controlled deposition of amino acid molecules onto mineral surfaces relevant to the early Earth environment, under ultra-high vacuum conditions. As an initial step, suitable substrate materials were characterized. Reflectance Anisotropy Spectroscopy (RAS) and X-ray Photoemission Spectroscopy (XPS) were employed to investigate layered systems such as Ge₂Sb₂Te₅, as well as TiO₂ and GeAs, which serve as substrates of both physical relevance and scientific interest. Complementary experiments were also carried out on chiral molecules in liquid solution using CD-RAS, providing insights into their optical activity. Furthermore, the project included initial developments in on-surface synthesis techniques, laying the groundwork for future studies on molecular aggregation processes and their correlation with temperature.

Presentation materials