摘要翻译:
我们发现了一个新的三维晶体球填料家族,它们严格地被卡住(即机械稳定),但却具有异常低的密度。这一族构成了无数个晶体填料,它们是最密集的晶体填料的子填料,其特点是渗透结构的高度自避“隧道”(空位链)。这些隧道晶体的基本几何特征本身就引起了人们的兴趣,这里将进行一些详细的描述。其中包括晶格向量(指定堆积配置)、配位结构、Voronoi单元和密度波动。隧道晶体不仅是达到干扰阈值(最低密度刚性堆积)的候选结构,而且在凝聚态物理和材料科学中具有广泛的意义。
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英文标题:
《Toward the Jamming Threshold of Sphere Packings: Tunneled Crystals》
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作者:
S. Torquato and F. H. Stillinger
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Soft Condensed Matter 软凝聚态物质
分类描述:Membranes, polymers, liquid crystals, glasses, colloids, granular matter
膜,聚合物,液晶,玻璃,胶体,颗粒物质
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
We have discovered a new family of three-dimensional crystal sphere packings that are strictly jammed (i.e., mechanically stable) and yet possess an anomalously low density. This family constitutes an uncountably infinite number of crystal packings that are subpackings of the densest crystal packings and are characterized by a high concentration of self-avoiding "tunnels" (chains of vacancies) that permeate the structures. The fundamental geometric characteristics of these tunneled crystals command interest in their own right and are described here in some detail. These include the lattice vectors (that specify the packing configurations), coordination structure, Voronoi cells, and density fluctuations. The tunneled crystals are not only candidate structures for achieving the jamming threshold (lowest-density rigid packing), but may have substantially broader significance for condensed matter physics and materials science.
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PDF链接:
https://arxiv.org/pdf/707.4263