Shiwang Cheng Contact 865.576.6415 | CHENGS3@ORNL.GOV All Publications Big Effect of Small Nanoparticles: A Shift in Paradigm for Polymer Nanocomposites Unexpected Molecular Weight Effect in Polymer Nanocomposites Unraveling the Mechanism of Nanoscale Mechanical Reinforcement in Glassy Polymer Nanocomposites Polystyrene Glasses under Compression: Ductile and Brittle Responses Revealing spatially heterogeneous relaxation in a model nanocomposite Key Links Organizations Physical Sciences Directorate Chemical Sciences Division Separations and Polymer Chemistry Section Soft Matter Group