Shiwang Cheng Contact chengs@ornl.gov | 865.576.6415 All Publications Big Effect of Small Nanoparticles: A Shift in Paradigm for Polymer Nanocomposites Polystyrene Glasses under Compression: Ductile and Brittle Responses Unexpected Molecular Weight Effect in Polymer Nanocomposites Unraveling the Mechanism of Nanoscale Mechanical Reinforcement in Glassy Polymer Nanocomposites Revealing spatially heterogeneous relaxation in a model nanocomposite Key Links ORCID Organizations Physical Sciences Directorate Chemical Sciences Division Separations and Polymer Chemistry Section Soft Matter Group