Directed patterned adsorption of magnetic beads on polyelectrolyte multilayers on glass

被引：38

作者：

Lyles, BF ^{[1
]}

Terrot, MS ^{[1
]}

Hammond, PT ^{[1
]}

Gast, AP ^{[1
]}

机构：

[1] MIT, Dept Chem Engn, Cambridge, MA 02139 USA

来源：

LANGMUIR | 2004年 / 20卷 / 08期

关键词：

D O I：

10.1021/la049486d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Here we present a study of patterning micrometer-sized features on glass surfaces with magnetic colloids. We employ a polyelectrolyte foundation composed of five bilayers on the surface of a glass slide. The directed assembly of carboxylate-modified superparamagnetic particles is accomplished by creating patterned regions of opposite charge via polymer-on-polymer stamping. Dot patterns created in a two-dimensional square array produce colloidal clusters with diameters ranging from 1 to 12 mum. Individual magnetic particles were patterned on the glass surface with micrometer-scale precision. Striped patterns also produced lines of magnetic particles varying in spacing and width from 1 to 7 mum.

引用

页码：3028 / 3031

页数：4

共 24 条

[1] Patterned colloidal deposition controlled by electrostatic and capillary forces [J].