High-yield dielectrophoretic assembly of two-dimensional graphene nanostructures

被引：37

作者：

Burg, Brian R. ^{[1
]}

Luetolf, Fabian ^{[1
]}

Schneider, Julian ^{[1
]}

Schirmer, Niklas C. ^{[1
]}

Schwamb, Timo ^{[1
]}

Poulikakos, Dimos ^{[1
]}

机构：

[1] ETH, Lab Thermodynam Emerging Technol, Dept Mech & Proc Engn, CH-8092 Zurich, Switzerland

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 05期

关键词：

coating techniques; electrical resistivity; electrodes; electrophoresis; graphene; sheet materials; thick films; INDIVIDUAL CARBON NANOTUBES; OXIDE; TRANSPARENT; DEPOSITION; FILMS; SEPARATION; SHEETS;

D O I：

10.1063/1.3077197

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Graphene handling is still dominated by serial mechanical exfoliation, which may well facilitate measurements in a laboratory environment but does not allow reliable larger-scale integration. Herein we demonstrate the controlled, high-yield (>90%), site-selective deposition of ultrathin few-layer (three to ten) graphene oxide by dielectrophoresis between prefabricated electrodes. Individual layers are found near the edges. Initially insulating, thermal reduction at 450 degrees C thins out the two-dimensional few-atom thick films and dramatically reduces electrical resistances down to 40 k Omega. Conductivities between 15 and 36 S/cm are obtained. The introduced method permits the nonintrusive, parallel, large-scale assembly of soluble two-dimensional nanostructures and sheets.

引用

页数：3

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