Nano Archive

Large-area blown bubble films of aligned nanowires and carbon nanotubes

Yu, Guihua and Cao, Anyuan and Lieber, Charles M. (2007) Large-area blown bubble films of aligned nanowires and carbon nanotubes. NATURE NANOTECHNOLOGY, 2 (6). pp. 372-377.

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Abstract

Many of the applications proposed for nanowires and carbon nanotubes require these components to be organized over large areas with controlled orientation and density. Although progress has been made with directed assembly and Langmuir-Blodgett approaches, it is unclear whether these techniques can be scaled to large wafers and non-rigid substrates. Here, we describe a general and scalable approach for large-area, uniformly aligned and controlled-density nanowire and nanotube films, which involves expanding a bubble from a homogeneous suspension of these materials. The blown-bubble films were transferred to single-crystal wafers of at least 200 mm in diameter, flexible plastics sheets of dimensions of at least 225 x 300 mm(2) and highly curved surfaces, and were also suspended across open frames. In addition, electrical measurements show that large arrays of nanowire field-effect transistors can be efficiently fabricated on the wafer scale. Given the potential of blown film extrusion to produce continuous films with widths exceeding 1 m, we believe that our approach could allow the unique properties of nanowires and nanotubes to be exploited in applications requiring large areas and relatively modest device densities.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
Physical Science > Nanoelectronics
Technology > Manufacturing processes for nanotechnology
ID Code:1657
Deposited By:Mark Morrison
Deposited On:08 Jan 2009 12:50
Last Modified:08 Jan 2009 12:50

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