Department of Physics and Astronomy, Tufts University, 574 Boston Avenue, Medford, Massachusetts 02155, USA.
Soft Matter. 2017 Oct 11;13(39):7090-7097. doi: 10.1039/c7sm00179g.
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.
我们研究了在球面上双分散球形颗粒的堆积。即使对于单分散颗粒，曲率的存在也需要缺陷；当较小的颗粒填充在较大球体的间隙中时，双分散性要么导致几乎相等半径的更无序的堆积，要么导致更高的填充分数。通过渗流转变来解释堆积分数的变化，就像以前在单分散情况下发现的缺陷或疤痕链一样，它们会生长并最终断开相邻的图形。
