88 citations · 328 across the 8 of their papers we have counts for
8 papers · 1 filter
Entropic stress of grafted polymer chains in shear flow
Jan Mees, Thomas C. O'Connor, Lars Pastewka
We analyze the shear response of grafted polymer chains in shear flow via coarse-grained molecular dynamics simulations. Our simulations confirm that the shear response is dominate…
Molecular mechanisms of self-mated hydrogel friction
Jan Mees, Rok Simič, Thomas C. O'Connor +2
Self-mated hydrogel contacts show extremely small friction coefficients at low loads but a distinct velocity dependence. Here we combine mesoscopic simulations and experiments to t…
Super-stretchable Elastomer from Cross-linked Ring Polymers
Jiuling Wang, Thomas C. O'Connor, Gary S. Grest +1
The stretchability of polymeric materials is critical to many applications such as stretchable electronics and soft robotics, yet the stretchability of conventional cross-linked li…
Composite Entanglement Topology and Extensional Rheology of Symmetric Ring-Linear Polymer Blends
Thomas C. O'Connor, Ting Ge, Gary S. Grest
Extensive molecular simulations are applied to characterize the equilibrium dynamics, entanglement topology, and nonlinear extensional rheology of symmetric ring-linear polymer ble…
Topological Linking Drives Anomalous Thickening of Ring Polymers In Weak Extensional Flows
Thomas C. O'Connor, Ting Ge, Michael Rubinstein +1
Molecular dynamics simulations confirm recent extensional flow experiments showing ring polymer melts exhibit strong extension-rate thickening of the viscosity at Weissenberg numbe…
O'Connor, Alvarez, and Robbins Reply to Xu et al. (arXiv:1808.05390)
Thomas C. O'Connor, Nicolas J. Alvarez, Mark O. Robbins
The preceding Comment by Xu et al. (Phys. Rev. Lett. 122, 059803 (2019); arXiv:1808.05390) erroneously applies the entropic stress expression in our Letter (T.C. O'Connor et al., P…
Relating Chain Conformations to Extensional Stress In Entangled Polymer Melts
Thomas C. O'Connor, Nicolas J. Alvarez, Mark O. Robbins
Nonlinear extensional flows are common in polymer processing but remain challenging theoretically because dramatic stretching of chains deforms the entanglement network far from eq…
Chain Ends and the Ultimate Strength of Polyethylene Fibers
Thomas C. O'Connor, Mark O. Robbins
We use large scale molecular dynamics (MD) simulations to determine the tensile yield mechanism of orthorhombic polyethylene (PE) crystals with finite chains spanning c…