Speaker
Description
The advent of quantum beam sources, which can generate high-flux high-energy X-rays/neutrons, and the development of advanced instrumentations make it feasible to probe atomic arrangement in disordered materials at atomistic level with a high real space resolution. A combination of quantum-beam diffraction and data-driven structural modeling such as reverse Monte Carlo enables us to study topological order in disordered materials. We introduce recent research topics on probing the topological order in oxide glasses and liquids revealed by several topological analyses (ring size, cavity volume, and homology) on the atomistic configuration derived by combined molecular dynamics (MD)-RMC modeling based on X-ray and neutron diffraction data. Finally, we introduce extraordinarily-ordered glasses and liquids to discuss the relationship between diffraction peaks and intermediate-range order in disordered materials.
