Self-Assembly of Two-Dimensional Patchy Colloidal Dumbbells
Self-Assembly of Two-Dimensional Patchy Colloidal Dumbbells
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DOI：
10.7566/jpsj.87.064601
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发表时间：
2018-06-15
影响因子：
1.7
通讯作者：
Sato, Masahide
中科院分区：
文献类型：
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作者：
Nakamura, Kanji;Sato, Masahide
我们研究了由相互吸引和相互排斥的圆环组成的二维块状哑铃状胶体的自组装。胶体哑铃的形状由形成它的两个圆的直径之比q和两个圆的质心之间的无量纲距离l来表征。我们进行Monte Carlo模拟，并表明，各种自组装结构，胶束，细长胶束，直弦，网状结构，并与空隙大集群，通过改变q和l的组合形成。q表示胶体哑铃的排斥部分的空间效应。l表示颗粒形状的各向异性，并增加吸引部分的周边。从我们的模拟中，我们发现自组装结构的形状对q比l更敏感。
We study the self-assembly of two-dimensional patchy colloidal dumbbells, which are composed of attractive and repulsive circles. The shape of a colloidal dumbbell is characterized by the ratio of the diameters of the two circles forming it, q, and the dimensionless distance between the centers of mass of the two circles, l. We carry out Monte Carlo simulations and show that various sell-assembled structures, micelles, elongated micelles, straight string, a meshlike structure, and large clusters with voids, are formed by changing the combination of q and l. q represents the steric effect of the repulsive part of colloidal dumbbells. l represents the anisotropy of the paiticle shape and increasing the periphery of attractive part. From our simulations, we find that the shapes of self-assembled structures are more sensitive to q than to l.