Methods for Creation and Linear Elastic Response Analysis of Packings of Semi-flexible Soft Polymer Chains

Abstract

From understanding the sand on the beach to the foam on your beer, soft sphere simulations have been crucial to the study of the amorphous world around us. However, many of the materials we interact with on a daily basis aren't comprised of individual grains, but complex molecules and chains of polymers. By extending the soft sphere model to a model of linked spheres, we can learn more about the materials we interact with on a daily basis. In this methods paper, I show how one can find and study the physical properties of packings of flexible chains, rigid molecules, and everything in between. In addition to describing the energy landscape of these materials, these methods describe how to shear stabilize polymer packings, classify them in the jamming hierarchy, describe their elastic properties, and much more. This simple modification to soft sphere simulations has the potential to yield new discoveries surrounding glasses.

References in corpus (11)

• Vibrational modes identify soft spots in a sheared disordered packing
• Molecular dynamics simulations of glassy polymers
• Jamming Criticality Revealed by Removing Localized Buckling Excitations
• The packing of granular polymer chains
• Soft Sphere Packings at Finite Pressure but Unstable to Shear
• Pinching a glass reveals key properties of its soft spots
• Universal non-Debye scaling in the density of states of amorphous solids
• Jamming of semiflexible polymers
• Echoes of the glass transition in athermal soft spheres
• Evidence for marginal stability in emulsions
• Jamming Energy Landscape is Hierarchical and Ultrametric