Self-Assembly of Pillars Modified with Vapor Deposited Polymer Coatings

被引：22

作者：

Chen, Benny ^{[1
]}

Seidel, Scott ^{[1
]}

Hori, Hiroki ^{[1
]}

Gupta, Malancha ^{[1
]}

机构：

[1] Univ So Calif, Mork Family Dept Chem Engn & Mat Sci, Los Angeles, CA 90089 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2011年 / 3卷 / 11期

关键词：

coatings; self-assembly; polymers; capillary forces; soft lithography; adhesion; MICROPILLAR ARRAYS; ADHESIVE; ICVD; STABILITY; SURFACES;

D O I：

10.1021/am200836n

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, we demonstrate that thin layers of polymer coatings can be used to self-assemble pillars into stable microstructures. Polymer coatings are deposited onto elastomeric pillars using solventless initiated chemical vapor deposition and capillary forces are used to collapse the coated pillars into microstructures. The location of pillar collapse can be controlled by patterning regions of hydrophilicity and hydrophobicity. Poly(hydroxyethyl methacrylate) and poly(methacrylic acid) coatings stabilize the self-assembled microstructures by providing an adhesive force through solvent bonding. These solvent bonds allow the response of the microstructures to be tuned by varying the thickness of the polymer coating and the solubility parameter of the solvent. The coating process described in this paper is substrate-independent and therefore can be applied to pillars composed of any material.

引用

页码：4201 / 4205

页数：5

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