Molecular mechanics of disordered solids

F Bamer, F Ebrahem, B Markert, B Stamm - Archives of Computational …, 2023 - Springer
Disordered solids are ubiquitous in engineering and everyday use. Although research has
made considerable progress in the last decades, our understanding of the mechanics of …

Topology of vibrational modes predicts plastic events in glasses

ZW Wu, Y Chen, WH Wang, W Kob, L Xu - Nature Communications, 2023 - nature.com
The plastic deformation of crystalline materials can be understood by considering their
structural defects such as disclinations and dislocations. Although also glasses are solids …

Stochastic atomic acceleration during the X-ray-induced fluidization of a silica glass

F Dallari, A Martinelli, F Caporaletti… - Proceedings of the …, 2023 - National Acad Sciences
The X-ray-induced, nonthermal fluidization of the prototypical SiO2 glass is investigated by X-
ray photon correlation spectroscopy in the small-angle scattering range. This process is …

Predicting the failure of two-dimensional silica glasses

F Font-Clos, M Zanchi, S Hiemer, S Bonfanti… - Nature …, 2022 - nature.com
Being able to predict the failure of materials based on structural information is a fundamental
issue with enormous practical and industrial relevance for the monitoring of devices and …

Universal low-frequency vibrational modes in silica glasses

S Bonfanti, R Guerra, C Mondal, I Procaccia… - Physical Review Letters, 2020 - APS
It was recently shown that different simple models of glass formers with binary interactions
define a universality class in terms of the density of states of their quasilocalized low …

The brittle-to-ductile transition in aluminosilicate glasses is driven by topological and dynamical heterogeneity

L Tang, MM Smedskjaer, M Bauchy - Acta Materialia, 2023 - Elsevier
Amorphous materials can exhibit varying degrees of nanoscale ductility depending on their
atomic structure. Despite its critical importance for applications, the physical origin that …

Discontinuous yielding of pristine micro-crystals

OU Salman, R Baggio… - Comptes …, 2021 - comptes-rendus.academie-sciences …
We study the mechanical response of a dislocation-free 2D crystal under homogenous
shear using a new mesoscopic approach to crystal plasticity, a Landau-type theory …

Quasilocalized modes in crystalline and partially crystalline high-entropy alloys

S Bonfanti, R Guerra, R Alvarez-Donado… - Physical Review …, 2024 - APS
High entropy alloys (HEAs) are designed by mixing multiple metallic species in nearly the
same amount to obtain crystalline or amorphous materials with exceptional mechanical …

Avalanches, clusters, and structural change in cyclically sheared silica glass

H Bhaumik, G Foffi, S Sastry - Physical Review Letters, 2022 - APS
We investigate avalanches and clusters associated with plastic rearrangements and the
nature of structural change in the prototypical strong glass, silica, computationally. We …

Data-driven classification of elementary rearrangement events in silica glass

F Bamer, SS Alshabab, A Paul, F Ebrahem, B Markert… - Scripta Materialia, 2021 - Elsevier
Reliable classification and prediction of elementary rearrangement events is a crucial step
towards a profound understanding of the mechanical behavior of silica glass. Using various …