activity
20212025
most citedEntanglement length scale separates threading from branching of unknotted and non-concatenated ring polymers in melts

25 citations · 60 across the 6 of their papers we have counts for

collaborators

6 papers

cond-mat.soft2025★ 1 cited

Ring polymers in two-dimensional melts double-fold around randomly branching "primitive shapes"

Mattia A. Ubertini, Angelo Rosa

Drawing inspiration from the concept of the "primitive path" of a linear chain in melt conditions, we introduce here a numerical protocol which allows us to detect, in an unambiguo…

cond-mat.soft2024★ 1 cited

Universal time and length scales of polar active polymer melts

Mattia Alberto Ubertini, Emanuele Locatelli, Angelo Rosa

We present an in-depth multi-scale analysis of the conformations and dynamics of polar active polymers, comparing very dilute and very dense conditions. We unveil characteristic le…

cond-mat.soft2023

Spatial organization of slit-confined melts of ring polymers with non-conserved topology: A lattice Monte Carlo study

Mattia Alberto Ubertini, Angelo Rosa

We present Monte Carlo computer simulations for melts of semiflexible randomly knotted and randomly concatenated ring polymers on the fcc lattice and in slit confinement. Through s…

cond-mat.soft2023★ 17 cited

Topological analysis and the recovery of entanglements in polymer melts

Mattia Alberto Ubertini, Angelo Rosa

The viscous flow of polymer chains in dense melts is dominated by topological constraints whenever the single chain contour length, N, becomes larger than the characteristic scale…

cond-mat.soft2022★ 25 cited

Entanglement length scale separates threading from branching of unknotted and non-concatenated ring polymers in melts

Mattia Alberto Ubertini, Jan Smrek, Angelo Rosa

Current theories on the conformation and dynamics of unknotted and non-concatenated ring polymers in melt conditions describe each ring as a tree-like double-folded object. While e…

cond-mat.soft2021★ 16 cited

Computer simulations of melts of ring polymers with non-conserved topology: A dynamic Monte Carlo lattice model

Mattia Alberto Ubertini, Angelo Rosa

We present computer simulations of a dynamic Monte Carlo algorithm for polymer chains on the FCC lattice which takes explicitly into account the possibility to overcome topological…