37 citations · 95 across the 9 of their papers we have counts for
9 papers
Effect of nematic ordering on the elasticity and yielding in disordered polymeric solids
Nicola Calonaci, Andrea Giuntoli, Sebastiano Bernini +1
The relation between elasticity and yielding is investigated in a model polymer solid by Molecular-Dynamics simulations. By changing the bending stiffness of the chain and the bond…
Bond disorder, frustration and polymorphism in the spontaneous crystallization of a polymer melt
Andrea Giuntoli, Sebastiano Bernini, Dino Leporini
The isothermal, isobaric spontaneous crystallization of a supercooled polymer melt is investigated by MD simulation of an ensemble of fully-flexible linear chains. Frustration is i…
Thermodynamic scaling of vibrational dynamics and relaxation
F. Puosi, O. Chulkin, S. Bernini +2
We investigate by thorough Molecular Dynamics simulations the thermodynamic scaling (TS) of a polymer melt. Two distinct models, with strong and weak virial-energy correlations, ar…
Cage effect in supercooled molecular liquids: local anisotropies and collective solid-like response
S. Bernini, D. Leporini
Both local geometry and collective, extended excitations drive the moves of a particle in the cage of its neighbours in dense liquids. The strength of their influence is investigat…
Anisotropy of the monomer random walk in a polymer melt: local-order and connectivity effects
S. Bernini, D. Leporini
The random walk of a bonded monomer in a polymer melt is anisotropic due to local order and bond connectivity. We investigate both effects by molecular-dynamics simulations on melt…
Short-Time Elasticity of Polymer Melts: Tobolsky Conjecture and Heterogeneous Local Stiffness
S. Bernini, D. Leporini
An extended Molecular-Dynamics study of the short-time "glassy" elasticity exhibited by a polymer melt of linear fully-flexible chains above the glass transition is presented. The…