Web Release Date: October 13,
Printed Multilayer Superstructures of Aligned Single-Walled Carbon Nanotubes for Electronic Applications
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Department of Materials Science and Engineering, Department of Physics, Department of Mechanical Science and Engineering, Department of Electrical and Computer Engineering, Department of Chemistry, Beckman Institute for Advanced Science and Technology, Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana-Champaign, Illinois, and Division of Advanced Technology, Korea Research Institute of Standards and Science, Daejeon, 305-340 South Korea
Received July 3, 2007
Revised September 18, 2007
Abstract:
We developed means to form multilayer superstructures of large collections of single-walled carbon nanotubes (SWNTs) configured in horizontally aligned arrays, random networks, and complex geometries of arrays and networks on a wide range of substrates. The approach involves guided growth of SWNTs on crystalline and amorphous substrates followed by sequential, multiple step transfer of the resulting collections of tubes to target substrates, such as high-k thin dielectrics on silicon wafers, transparent plates of glass, cylindrical tubes and other curved surfaces, and thin, flexible sheets of plastic. Electrical measurements on dense, bilayer superstructures, including crossbars, random networks, and aligned arrays on networks of SWNTs reveal some important characteristics of representative systems. These and other layouts of SWNTs might find applications not only in electronics but also in areas such as optoelectronics, sensors, nanomechanical systems, and microfluidics.
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