Fig. 7: Si-centric PDs for glassy SiO2.
From: Structure and properties of densified silica glass: characterizing the order within disorder
A–D The PDs for (A) RT/7.7 GPa, (B) 400 °C/7.7 GPa, (C) 1200 °C/7.7 GPa and (D) RT/20 GPa. The multiplicity Mij per Si atom is indicated by the color bar. E–H Three-dimensional representations of the PDs for the boxed regions shown in (A)–(D), respectively. A PD is a visualization of the persistent homology of the glass network. It conveys quantitative information regarding the topological features of that network, in this case, the holes that are created from the positioning of the Si atoms.
