Colloidal interactions and self-assembly using DNA hybridization

被引：287

作者：

Biancaniello, PL ^{[1
]}

Kim, AJ

Crocker, JC

机构：

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

[2] Univ Penn, Dept Chem & Biomol Engn, Philadelphia, PA 19104 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.94.058302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The specific binding of complementary DNA strands has been suggested as an ideal method for directing the controlled self-assembly of microscopic objects. We report the first direct measurements of such DNA-induced interactions between colloidal microspheres, as well as the first colloidal crystals assembled using them. The interactions measured with our optical tweezer method can be modeled in detail by well-known statistical physics and chemistry, boding well for their application to directed self-assembly. The microspheres' binding dynamics, however, have a surprising power-law scaling that can significantly slow annealing and crystallization.

引用

页数：4