论文标题
各向异性包装问题中缺陷基序的伸长和渗透
Elongation and percolation of defect motifs in anisotropic packing problems
论文作者
论文摘要
我们通过连续改变单分散球或单分散的椭圆形颗粒，通过不断改变它们的大小分布或形状，来检查不同属表面上各向异性物体的晶体和无定形堆之间的状态；我们还考虑了汤姆森问题的各向异性变体，并混合了电荷。随着各向异性的增加，我们首先观察到尼尔森，鲁宾斯坦和斯佩彭提出的中间方向有序的示象相的翻译秩序破坏，然后是过渡到无定形状态的。通过分析所引起的披露基序的结构，我们表明，诊断为不惯性过渡是由披露晶界的增长和联系引起的，这表明这种过渡在于所考虑的场景中的渗透普遍性类别。
We examine the regime between crystalline and amorphous packings of anisotropic objects on surfaces of different genus by continuously varying their size distribution or shape from monodispersed spheres to bidispersed mixtures or monodispersed ellipsoidal particles; we also consider an anisotropic variant of the Thomson problem with a mixture of charges. With increasing anisotropy, we first observe the disruption of translational order with an intermediate orientationally ordered hexatic phase as proposed by Nelson, Rubinstein and Spaepen, and then a transition to amorphous state. By analyzing the structure of the disclination motifs induced, we show that the hexatic-amorphous transition is caused by the growth and connection of disclination grain boundaries, suggesting this transition lies in the percolation universality class in the scenarios considered.
