Search Results - "O'Connor, Thomas C"

Relating Chain Conformations to Extensional Stress in Entangled Polymer Melts by O'Connor, Thomas C, Alvarez, Nicolas J, Robbins, Mark O

“…Nonlinear extensional flows are common in polymer processing, but they remain challenging theoretically because dramatic stretching of chains deforms the…”
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Topological Linking Drives Anomalous Thickening of Ring Polymers in Weak Extensional Flows by O'Connor, Thomas C, Ge, Ting, Rubinstein, Michael, Grest, Gary S

“…Molecular dynamics simulations confirm recent extensional flow experiments showing ring polymer melts exhibit strong extension-rate thickening of the viscosity…”
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Diffusion of Thin Nanorods in Polymer Melts by Wang, Jiuling, O’Connor, Thomas C, Grest, Gary S, Zheng, Yitong, Rubinstein, Michael, Ge, Ting

“…The diffusion of monomerically thin nanorods in polymer melts is studied by molecular dynamics simulations. We focus on the systems where the chains are long…”
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Superstretchable Elastomer from Cross-linked Ring Polymers by Wang, Jiuling, O’Connor, Thomas C., Grest, Gary S., Ge, Ting

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Threading-Unthreading Transition of Linear-Ring Polymer Blends in Extensional Flow by Borger, Anine, Wang, Wendi, O'Connor, Thomas C, Ge, Ting, Grest, Gary S, Jensen, Grethe V, Ahn, Junyoung, Chang, Taihyun, Hassager, Ole, Mortensen, Kell, Vlassopoulos, Dimitris, Huang, Qian

“…Adding small amounts of ring polymers to a matrix of their linear counterparts is known to increase the zero-shear-rate viscosity because of linear-ring…”
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Chain Ends and the Ultimate Strength of Polyethylene Fibers by O’Connor, Thomas C, Robbins, Mark O

“…We use large scale molecular dynamics (MD) simulations to determine the tensile yield mechanism of orthorhombic polyethylene (PE) crystals with finite chains…”
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Molecular Mechanisms of Self-mated Hydrogel Friction by Mees, Jan, Simič, Rok, O’Connor, Thomas C., Spencer, Nicholas D., Pastewka, Lars

“…Hydrogel-like structures are responsible for the low friction experienced by our joints when we walk or by our eyelids when we blink. At low loads, hydrogel…”
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Micromechanical models for the stiffness and strength of UHMWPE macrofibrils by Dong, Hai, Wang, Zheliang, O’Connor, Thomas C., Azoug, Aurelie, Robbins, Mark O., Nguyen, Thao D.

“…Ultrahigh molecular weight polyethylene (UHMWPE) fibers have a complex hierarchical structure that at the micron-scale is composed of oriented chain crystals,…”
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Entropic Mixing of Ring/Linear Polymer Blends by Grest, Gary S., Ge, Ting, Plimpton, Steven J., Rubinstein, Michael, O’Connor, Thomas C.

“…The topological constraints of nonconcatenated ring polymers force them to form compact loopy globular conformations with much lower entropy than unconstrained…”
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O'Connor, Alvarez, and Robbins Reply by O'Connor, Thomas C, Alvarez, Nicolas J, Robbins, Mark O

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Unexpected Slow Relaxation Dynamics in Pure Ring Polymers Arise from Intermolecular Interactions by Tu, Michael Q., Davydovich, Oleg, Mei, Baicheng, Singh, Piyush K., Grest, Gary S., Schweizer, Kenneth S., O’Connor, Thomas C., Schroeder, Charles M.

“…Ring polymers have fascinated scientists for decades, but experimental progress has been challenging due to the presence of linear chain contaminants that…”
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A Reactive Bead–Spring Model for Associative Polymer Melts In and Out of Equilibrium by Liu, Songyue, O’Connor, Thomas C.

“…We describe a new coarse-grained reactive molecular dynamics model for associative polymer networks. Our model combines a Tersoff bond-order potential for…”
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Smoother Surfaces Enhance Diffusion of Nanorods in Entangled Polymer Melts by Taylor, Phillip A., Wang, Jiuling, Ge, Ting, O’Connor, Thomas C., Grest, Gary S.

“…Coarse-grained molecular dynamics simulations are used to study the diffusion of thin nanorods in entangled polymer melts for varying nanorod length and…”
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Stress Relaxation in Highly Oriented Melts of Entangled Polymers by O’Connor, Thomas C, Hopkins, Austin, Robbins, Mark O

“…Molecular dynamics simulations are used to study relaxation of entangled polymer melts deformed far from equilibrium by uniaxial extensional flow. Melts are…”
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Response of Sulfonated Polystyrene Melts to Nonlinear Elongation Flows by Mohottalalage, Supun S., Kosgallana, Chathurika, Meedin, Shalika, O’Connor, Thomas C., Grest, Gary S., Perahia, Dvora

“…Ionizable polymers form dynamic networks with domains controlled by two distinct energy scales, ionic interactions and van der Waals forces; both evolve under…”
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Daedalus in Dublin: A Physicist’s Labyrinth by O’Connor, Thomas C.

“…I describe some of the rich physical and natural-philosophy heritage of the urban center of the Irish capital Dublin (first tour) and its environs (second…”
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Measuring Topological Constraint Relaxation in Ring-Linear Polymer Blends by Vigil, Daniel L, Ge, Ting, Rubinstein, Michael, O'Connor, Thomas C, Grest, Gary S

“…Polymers are an effective test bed for studying topological constraints in condensed matter due to a wide array of synthetically available chain topologies…”
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Unified understanding of the impact of semiflexibility, concentration, and molecular weight on macromolecular-scale ring diffusion by Mei, Baicheng, Grest, Gary S, Liu, Songyue, O'Connor, Thomas C, Schweizer, Kenneth S

“…Conformationally fluctuating, globally compact macromolecules such as polymeric rings, single-chain nanoparticles, microgels, and many-arm stars display…”
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A hybrid smoothed-particle hydrodynamics model of oxide skins on molten aluminum by Clemmer, Joel T., Pierce, Flint, O'Connor, Thomas C., Nevins, Thomas D., Jones, Elizabeth M.C., Lechman, Jeremy B., Tencer, John

“…A computational model of aluminum melting is proposed which captures both the thermal fluid-solid phase transition and the mechanical effects of oxidation. The…”
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Directional dependence of the mechanical properties of aged paper by Leheny, Sophie, Robbins, Thomas C., Robbins, Catherine K., Zhou, Fangyi, Hall, Andrea K.I., McGath, Molly K., Pasternack, Louise, Wallace, Jay, O'Connor, Thomas C., McGuiggan, Patricia M.

“…Tensile testing was used to measure the mechanical properties of paper at various orientations relative to the fiber alignment of paper. New, artificially…”
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