2024/12/13 by Miyahara, Yoshitaka, Haga, Taiki
Chemistry · #Electrostatics and Colloid Interactions #FOS: Physical sciences #Soft Condensed Matter (cond-mat.soft) #Spectroscopy and Chemometric Analyses #Statistical Mechanics (cond-mat.stat-mech)
paper · pdf · doi:10.48550/arxiv.2412.09949
openalex publication_date 2024/12/13 · openalex created_date 2024/12/17 · openalex updated_date 2026/07/28
We develop an unsupervised machine learning approach to classify disordered phases in a system of oppositely charged colloids. In this system, the interplay between Coulomb and van der Waals interactions leads to transitions in local structures, while the global structure remains disordered. Our method involves representing the local structures of the system as high-dimensional vectors and applying principal component analysis to identify distinct features of each phase. We demonstrate that our method results in a reasonable classification of disordered phases, which is consistent with that obtained from radial distribution functions. The interpretability of the method reveals the key characteristics of each phase and provides valuable insights into the mechanisms underlying the unconventional phase transitions.