Publications de Alessandro Luigi Sellerio

High-Precision MRI Reconstruction Algorithm for 3D Sphere Packings

Arnaud Comment, Daniele Mari, Alessandro Luigi Sellerio, Riccardo Balzan

Packings of granular materials are complex systems consisting of large sets of particles interacting via contact forces. Their internal structure is interesting for several theoretical and practical reasons, especially when the model system consists in a l ...

Springer Verlag2015

A link between short-range and long-range properties of random sphere packings

Arnaud Comment, Gérard Gremaud, Daniele Mari, Alessandro Luigi Sellerio, Riccardo Balzan

We present a high precision particle-by-particle 3D reconstruction of granular systems composed of monodispersed spheres (sphere packings); the experimental approach is based on magnetic resonance imaging techniques. Our measurements revealed a strong corr ...

Springer Berlin Heidelberg2013

Friction and Hertzian contact in granular glass

Gérard Gremaud, Daniele Mari, Alessandro Luigi Sellerio

We study the jamming process arising in granular systems subjected to decreasing external vibration, which has features similar to the cooling of glass-forming liquids. We modify the friction between grains and observe that jamming occurs 'more easily' for ...

Iop Publishing Ltd2013

Fractional Brownian motion and anomalous diffusion in vibrated granular materials

Gérard Gremaud, Daniele Mari, Alessandro Luigi Sellerio

We propose a new approach to the study of diffusion dynamics in vibrated granular systems. The dynamic of a granular material is mainly defined by dry friction interactions. This type of interaction is difficult to model for a large quantity of particles. ...

2012

Towards the Glass Transition in Vibrated Granular Matter

Alessandro Luigi Sellerio

Granular materials are large sets of macroscopic particles that interact solely via contact forces. The static behavior depends on the contact network and on the surface friction forces between grains; when they are set in motion (typically by vibrations) ...

EPFL2012

A new MRI reconstruction technique based on real space Hough transform for granular samples

Arnaud Comment, Gérard Gremaud, Daniele Mari, Alessandro Luigi Sellerio, Riccardo Balzan

2012

Glass transition associated with the jamming of vibrated granular matter

Gérard Gremaud, Daniele Mari, Alessandro Luigi Sellerio

We investigate a vibrated granular system composed of millimeter-size glass beads. When the system is submitted to a perturbation with decreasing intensity, below the fluidization limit, it evolves in a way similar to glass-forming liquids until it reaches ...

2011