Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Puosi, Francesco"'
We demonstrate that surface morphogenesis in compressed thin films may result from spatially correlated plastic activity. A soft glassy film strongly adhering to a smooth and rigid substrate and subjected to uniaxial compression, indeed, does not und
Externí odkaz:
http://arxiv.org/abs/2209.09055
Publikováno v:
Int. J. Mol. Sci. 2021, 22, 9577
The relaxation properties of viscous liquids close to their glass transition (GT) have been widely characterised by the statistical tool of time correlation functions. However, the strong influence of ubiquitous non-linearities calls for new, alterna
Externí odkaz:
http://arxiv.org/abs/2109.05839
Publikováno v:
Polymers 2021, 13(8), 1336 (2021)
The vibrational dynamics of a model polymer glass is studied by Molecular Dynamics simulations. The focus is on the "soft" monomers with high participation to the lower-frequency vibrational modes contributing to the thermodynamic anomalies of glasse
Externí odkaz:
http://arxiv.org/abs/2104.10411
The heterogeneous character of the Johari-Goldstein (JG) relaxation is evidenced by molecular-dynamics simulation of a model polymer system. A double-peaked evolution of dynamic heterogeneity (DH), with maxima located at JG and structural relaxation
Externí odkaz:
http://arxiv.org/abs/2102.12527
The mechanisms governing mechanical dissipation in amorphous tantala are studied at microscopic scale via Molecular Dynamics simulations, namely by mechanical spectroscopy in a wide range of temperature and frequency. We find that dissipation is asso
Externí odkaz:
http://arxiv.org/abs/2009.11012
Publikováno v:
Int. J. Mol. Sci. 2019, 20(22), 5708
Many systems, including polymers and molecular liquids, when adequately cooled and/or compressed, solidify into a disordered solid, i.e., a glass. The~transition is not abrupt, featuring progressive decrease of the microscopic mobility and huge slowi
Externí odkaz:
http://arxiv.org/abs/1911.07521
The onset of irreversible deformation in low-temperature amorphous solids is due to the accumulation of elementary events, consisting of spacially and temporally localized atomic rearrangements involving only a few tens of atoms. Recently, numerical
Externí odkaz:
http://arxiv.org/abs/1606.08745
We show that critical Casimir effects can be accessed through direct simulation of a model binary fluid passing through the demixing transition. We work in the semi grand canonical ensemble, in slab geometry, in which the Casimir force appears as the
Externí odkaz:
http://arxiv.org/abs/1603.07891
Publikováno v:
Phys. Rev. Lett. 116, 065501 (2016)
We study stress time series caused by plastic avalanches in athermally sheared disordered materials. Using particle-based simulations and a mesoscopic elasto-plastic model, we analyze size and shear-rate dependence of the stress-drop durations and si
Externí odkaz:
http://arxiv.org/abs/1506.08161
Shear transformations (i.e., localised rearrangements of particles resulting in the shear deformation of a small region of the sample) are the building blocks of mesoscale models for the flow of disordered solids. In order to compute the time-depende
Externí odkaz:
http://arxiv.org/abs/1503.01572