SUPERLATTICE FORMATION IN BINARY-MIXTURES OF HARD-SPHERE COLLOIDS
SUPERLATTICE FORMATION IN BINARY-MIXTURES OF HARD-SPHERE COLLOIDS
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DOI：
10.1103/physrevlett.68.3801
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发表时间：
1992-06-22
影响因子：
8.6
通讯作者：
PUSEY, PN
中科院分区：
文献类型：
--
作者：
BARTLETT, P;OTTEWILL, RH;PUSEY, PN
观察到半径比 R(B)/R(A) = 0.58 的悬浮硬球胶体颗粒的二元混合物在两种物质的不同相对比例下经历熵驱动的冻结转变为 AB2 和 AB13 超晶格结构。通过粉末光学晶体学和干燥固相的电子显微镜鉴定结构。确定了包含三种共晶的近似（恒定体积）相图。结果与尺寸比为 0.62 的早期工作进行了比较。
Binary mixtures of suspended hard-sphere colloidal particles, radius ratio R(B)/R(A) = 0.58, were observed to undergo entropically driven freezing transitions into both the AB2 and the AB13 superlattice structures at different relative proportions of the two species. The structures were identified by powder light crystallography and by electron microscopy of the dried solid phases. An approximate (constant volume) phase diagram containing three eutectics was determined. The results are compared with earlier work at size ratio 0.62.