Defect structure and percolation in the packing of bidispersed particles on a sphere.
basic_science · Level V
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- Record sourced from PubMed, PMID 28849852.
- Also identified by DOI 10.1039/c7sm00179g.
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Abstract
We study packings of bidispersed spherical particles on a spherical surface. The presence of curvature necessitates defects even for monodispersed particles; bidispersity either leads to a more disordered packing for nearly equal radii, or a higher fill fraction when the smaller particles are accommodated in the interstices of the larger spheres. Variation in the packing fraction is explained by a percolation transition, as chains of defects or scars previously discovered in the monodispersed case grow and eventually disconnect the neighbor graph.