4 papers
The origin of mechanical enhancement in polymer nanoparticle composites with ultra-high nanoparticle loading
Emily Y. Lin, Amalie L. Frischknecht, Robert A. Riggleman
Polymer nanoparticle composites (PNC) with ultra high loading of nanoparticles (> 50%) have been shown to exhibit markedly improved strength, stiffness, and toughness simultaneousl…
Distinguishing failure modes at the molecular level by examining heterogeneity in local structures and dynamics
Emily Y. Lin, Robert A. Riggleman
Brittle failure is ubiquitous in amorphous materials that are sufficiently cooled below their glass transition temperature, . This catastrophic failure mode is limiting for am…
Identifying structural signatures of shear banding in model polymer nanopillars
Robert J. S. Ivancic, Robert A. Riggleman
Amorphous solids are critical in the design and production of nanoscale devices, but under strong confinement these materials exhibit changes in their mechanical properties which a…
Bond Stiffness, not Chain Length, Dictates Polymer Infiltration into Nanopores
David J. Ring, Robert A. Riggleman, Daeyeon Lee
We study the effect of physical confinement on the capillary infiltration of polymers into cylindrical nanopores using molecular dynamics simulations. In particular, we probe wheth…