Selective Positioning and Integration of Individual Single-Walled Carbon Nanotubes
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- 作者：Liying Jiao ; Xiaojun Xian ; Zhongyun Wu ; Jin Zhang ; Zhongfan Liu
- 刊名：Nano Letters
- 出版年：2009
- 出版时间：January 14, 2009
- 年：2009
- 卷：9
- 期：1
- 页码：205-209
- 全文大小：232K
- 年卷期：v.9,no.1(January 14, 2009)
- ISSN：1530-6992
文摘
We present a general selective positioning and integration technique for fabricating single-walled carbon nanotube (SWNT) circuits with preselected individual SWNTs as building blocks by utilizing poly(methyl methacrylate) (PMMA) thin film as a macroscopically handlable mediator. The transparency and marker-replicating capability of PMMA mediator allow the selective placement of chirality-specific nanotubes onto predesigned patterned surfaces with a resolution of ca. 1 μm. This technique is compatible with multiple operations and p−n conversion by chemical doping, which enables the construction of complex and logic circuits. As demonstrations of building SWNTs circuits, we fabricated a field effect inverter, a 2 × 2 all-SWNT crossbar field effect transistor (FET), and flexible FETs on plastic with this technique. This selective positioning approach can also be extended to construct purpose-directed architecture with various nanoscale building blocks.