Entropically driven colloidal crystallization on patterned surfaces

被引：264

作者：

Lin, KH

Crocker, JC

Prasad, V

Schofield, A

Weitz, DA

Lubensky, TC

Yodh, AG

机构：

[1] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[2] Univ Edinburgh, Dept Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.85.1770

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the self-assembly of colloidal spheres on periodically patterned templates. The surface potentials and the surface phases are induced entropically by the presence of dissolved, nonadsorbing polymers. A rich variety of two-dimensional fluidlike and solidlike phases was observed to form on template potentials with both one- and two-dimensional symmetry. The same methodology was then used to nucleate an oriented single fee crystal more than 30 layers thick. The general approach provides a new route for directed self-assembly of novel mesoscopic structures.

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页码：1770 / 1773

页数：4

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