Memory formation in matter

NC Keim, JD Paulsen, Z Zeravcic, S Sastry… - Reviews of Modern …, 2019 - APS
Memory formation in matter is a theme of broad intellectual relevance; it sits at the
interdisciplinary crossroads of physics, biology, chemistry, and computer science. Memory …

Complex pathways and memory in compressed corrugated sheets

H Bense, M van Hecke - Proceedings of the National …, 2021 - National Acad Sciences
The nonlinear response of driven complex materials—disordered magnets, amorphous
media, and crumpled sheets—features intricate transition pathways where the system …

Sequential snapping and pathways in a mechanical metamaterial

J Ding, M van Hecke - The Journal of Chemical Physics, 2022 - pubs.aip.org
Materials that feature bistable elements, hysterons, exhibit memory effects. Often, these
hysterons are difficult to observe or control directly. Here, we introduce a mechanical …

Networks and hierarchies: How amorphous materials learn to remember

M Mungan, S Sastry, K Dahmen, I Regev - Physical review letters, 2019 - APS
We consider the slow and athermal deformations of amorphous solids and show how the
ensuing sequence of discrete plastic rearrangements can be mapped onto a directed …

Multiple memory formation in glassy landscapes

CW Lindeman, SR Nagel - Science Advances, 2021 - science.org
Cyclically sheared jammed packings form memories of the shear amplitude at which they
were trained by falling into periodic orbits where each particle returns to the identical …

Unified phase diagram of reversible–irreversible, jamming, and yielding transitions in cyclically sheared soft-sphere packings

P Das, HA Vinutha, S Sastry - Proceedings of the National …, 2020 - National Acad Sciences
Self-organization, and transitions from reversible to irreversible behavior, of interacting
particle assemblies driven by externally imposed stresses or deformation is of interest in …

Global memory from local hysteresis in an amorphous solid

NC Keim, J Hass, B Kroger, D Wieker - Physical Review Research, 2020 - APS
A disordered material that cannot relax to equilibrium, such as an amorphous or glassy
solid, responds to deformation in a way that depends on its past. In experiments we train a …

Models for the yielding behavior of amorphous solids

S Sastry - Physical Review Letters, 2021 - APS
Investigations of plastic deformation and yielding of amorphous solids reveal a strong
dependence of their yielding behavior on the degree of annealing. Above a threshold …

Critical behavior of density-driven and shear-driven reversible–irreversible transitions in cyclically sheared vortices

S Maegochi, K Ienaga, S Okuma - Scientific Reports, 2021 - nature.com
Random assemblies of particles subjected to cyclic shear undergo a reversible–irreversible
transition (RIT) with increasing a shear amplitude d or particle density n, while the latter type …

Annealing glasses by cyclic shear deformation

P Das, ADS Parmar, S Sastry - The Journal of Chemical Physics, 2022 - pubs.aip.org
A major challenge in simulating glassy systems is the ability to generate configurations that
may be found in equilibrium at sufficiently low temperatures, in order to probe static and …