View Working Paper: Icosahedral packing of polymer-tethered nanospheres and stabilization of the Gyroid Phase
Iacovella, Christopher R., Keys, Aaron S., Horsch, Mark A. and Glotzer, Sharon C. (2006). Icosahedral packing of polymer-tethered nanospheres and stabilization of the Gyroid Phase. Glotzer group. Depts of Chemical Engineering, Materials Science & Engineering, Macromolecular Science, and Physics, University of Michigan.
We present results of molecular simulations that predict the phases formed by the selfassembly of model nanospheres functionalized with a single polymer “tether”. Microphase
separation of the immiscible tethers and nanospheres induces the formation of the double gyroid, perforated lamella and crystalline bilayer phases. Confinement effects promote the formation of
icosahedral arrangements of nanoparticles that help to stabilize the gyroid and perforated lamella phases. We also present a new metric for determining the local arrangement of particles in liquid
and solid configurations. Preprint, link to published version can be found below.
School, Department or Centre
Glotzer group. Depts of Chemical Engineering, Materials Science & Engineering, Macromolecular Science, and Physics
University of Michigan
Additional images illustrating figure 1, the phase diagram, are available through the links below: hexagonally packed cylinders, double gyroid, perforated lamellae where
perforations are through the nanoparticles, and lamellar bilayers.