University Chemical Laboratories, Lensfield Road, Cambridge CB2 1EW, United Kingdom.
ACS Nano. 2013 Feb 26;7(2):1246-56. doi: 10.1021/nn304677t. Epub 2013 Jan 31.
A model potential for colloidal building blocks is defined with two different types of attractive surface sites, described as complementary patches and antipatches. A Bernal spiral is identified as the global minimum for clusters with appropriate arrangements of three patch-antipatch pairs. We further derive a minimalist design rule with only one patch and antipatch, which also produces a Bernal spiral. Monte Carlo simulations of these patchy colloidal building blocks in the bulk are generally found to corroborate the global optimization results.
定义了具有两种不同类型的吸引力表面位的胶体构建块的模型势能，描述为互补斑块和反斑块。对于具有适当的三个斑块-反斑块对排列的团簇，确定了伯纳尔螺旋作为全局最小值。我们进一步推导出一个仅具有一个斑块和反斑块的最小设计规则，它也产生了伯纳尔螺旋。在体相中的这些有斑块的胶体构建块的蒙特卡罗模拟通常证实了全局优化结果。
