Heyi Liang, Gary S. Grest, and Andrey V. Dobrynin Dynamics of melts and solutions of high molecular weight polymers and biopolymers is controlled by topological constraints (entanglements) imposing a sliding chain motion along an effective confining tube. For linear chains, … Read more

Zilu Wang, Yuan Tian, Heyi Liang, Douglas H. Adamson, and Andrey V. Dobrynin We use a combination of the coarse-grained molecular dynamics simulations and finite difference method calculations to study electromechanical coupling in composite polymer/graphene foams. In these foams, graphene … Read more

Sergei S. Sheiko and Andrey V. Dobrynin The current approach to regulating mechanical properties of elastomeric materials is predominately based on the exploratory mixing of different polymers, solvents, and fillers—which is both inflexible in application and imprecise in property control. … Read more

Heyi Liang, Zilu Wang, and Andrey V. Dobrynin We use coarse-grained molecular dynamics simulations to establish correlations between peak position in the static structure factor S(q) of combs and bottlebrushes in a melt and their architectural parameters such as the … Read more

Michael Jacobs, Heyi Liang, Erfan Dashtimoghadam, Benjamin J. Morgan, Sergei S. Sheiko, and Andrey V. Dobrynin While chain branching generally promotes swelling of polymer networks, it also leads to nonlinear modulus increase with network expansion. To understand the effect of … Read more

Ryan Sayko, Zhen Cao, Heyi Liang, and Andrey V. Dobrynin Nanoparticles have been recently shown to be able to act as effective adhesives capable of binding two soft materials together. We performed coarse-grained molecular dynamics simulations to study contact mechanics … Read more

Heyi Liang, Zilu Wang, Sergei S. Sheiko, and Andrey V. Dobrynin We have studied properties of comb-like and bottlebrush-like graft copolymers made of chemically different backbones and side chains in a melt. A diagram of states for this class of … Read more

Charles Clair, Abdelaziz Lallam, Martin Rosenthal, Michael Sztucki, Mohammad Vatankhah-Varnosfaderani, Andrew N. Keith, Yidan Cong, Heyi Liang, Andrey V. Dobrynin, Sergei S. Sheiko, and Dimitri A. Ivanov ABA triblock copolymers composed of a poly(dimethylsiloxane) (PDMS) bottlebrush central block and linear … Read more

Heyi Liang, Benjamin J. Morgan, Guojun Xie, Michael R. Martinez, Ekaterina B. Zhulina, Krzysztof Matyjaszewski, Sergei S. Sheiko, and Andrey V. Dobrynin A combination of scaling analysis and rheological experiments was used to study correlations between the entanglement plateau modulus … Read more

Yuan Tian, Heyi Liang, and Andrey V. Dobrynin Self-propelled elastic shells capable of transducing energy to rolling motion could have potential applications as drug delivery vehicles. To understand the dynamics of the nanoscale size elastic shells, we performed molecular dynamics … Read more