6 papers
Emergent medium-range order in amorphous silicon
Zhen Zhang, Stephen R. Elliott, Yujie Wang +1
Medium-range order (MRO) is an important feature of amorphous materials, but its nature in terms of atomic arrangement has remained elusive. Here, using large-scale machine-learnin…
Anisotropic medium-range order uncovers dynamic crossovers in glass-forming liquids
Kamlesh Mishra, Rajesh Ganapathy, Walter Kob
On cooling liquids towards their glass-transition temperature, the dramatic increase of their relaxation times is accompanied by changes in particle dynamics at two distinct temper…
Effective particle size governs structure and dynamics in rough hard-particle fluids
Nanqing Xiao, Zhen Zhang, Walter Kob +1
We numerically investigate how particle surface roughness affects the static and dynamic properties of a hard-particle fluid across a wide range of densities, rho. These simulation…
Connecting heterogeneous dynamics with local entropy
Jun Wu, Walter Kob, Yujie Wang +1
Establishing a robust and physically interpretable link between static structure and heterogeneous relaxation dynamics remains a fundamental challenge in glass physics. Here, we in…
Symmetry Transitions Beyond the Nanoscale in Pressurized Silica Glass
Zhen Zhang, Zhencheng Xie, Walter Kob
Silica is the paradigmatic network glass-former and understanding its response to pressure is essential for comprehending the mechanical properties of silica-based materials and th…
Revealing hidden medium-range order in silicate glass-formers using many-body correlation functions
Zhen Zhang, Walter Kob
The medium range order (MRO) in amorphous systems has been linked to complex features such as the dynamic heterogeneity of supercooled liquids or the plastic deformation of glasses…