Regensburg 2025 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 6: Critical Phenomena and Phase Transitions
DY 6.5: Talk
Monday, March 17, 2025, 12:30–12:45, H47
Relating phase transitions of confined materials and topology of pore network — Georgiy Baroncha1, Rustem Valiullin1, and •Eustathios Kikkinides2 — 1Leipzig University, Leipzig, Deutschland — 2Aristotle University of Thessaloniki, Thessaloniki, Griechenland
Measuring adsorption/desorption and melting/freezing transitions in porous materials is a common route to obtain information about pore structure. To describe phase transition behavior we exploit statistical network models including cooperative effects. In this way, important properties such as pore size distribution can be deduced. By constructing statistically-disordered random-brunching Bethe lattices we show that the average pore connectivity can be assessed. However, phase transitions remain insensitive to fine details of pore network, namely its topology. Further we discuss the experimental approaches to probe pore network topology.
Keywords: Phase transitions; Network models; Pore size distribution; Average connectivity; Pore network topology