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Ultrafast Laser Alignment and Processing of Carbon Nanotube Films

Published online by Cambridge University Press:  08 March 2011

Ryan D. Murphy
Affiliation:
Applied Physics Program, University of Michigan, 2477 Randall Laboratory, Ann Arbor, MI 48109, U.S.A.
Michael J. Abere
Affiliation:
Department of Materials Science and Engineering, University of Michigan, 2300 Hayward St., Ann Arbor, MI 48109, U.S.A.
Huanan Zhang
Affiliation:
Department of Chemical Engineering, University of Michigan, 2300 Hayward St., Ann Arbor, MI 48109, U.S.A.
Haiping Sun
Affiliation:
Department of Materials Science and Engineering, University of Michigan, 2300 Hayward St., Ann Arbor, MI 48109, U.S.A.
Ben Torralva
Affiliation:
Department of Materials Science and Engineering, University of Michigan, 2300 Hayward St., Ann Arbor, MI 48109, U.S.A.
John F. Mansfield
Affiliation:
Department of Materials Science and Engineering, University of Michigan, 2300 Hayward St., Ann Arbor, MI 48109, U.S.A.
Nick Kotov
Affiliation:
Department of Chemical Engineering, University of Michigan, 2300 Hayward St., Ann Arbor, MI 48109, U.S.A.
Steven M. Yalisove
Affiliation:
Department of Materials Science and Engineering, University of Michigan, 2300 Hayward St., Ann Arbor, MI 48109, U.S.A.
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Abstract

Organized nanostructures are formed after irradiation of layers of randomly aligned single-wall carbon nanotube (SWNT)-polymer composites by a Ti:Sapphire 775 nm laser with a 150 fs pulse at fluences near 0.1 J/cm2. At varying peak fluences morphology is seen where the tubes are ejected from the substrate or formed into long, parallel structures of SWNT’s. These structures have been created on both glass substrates and carbon grids. Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM) investigation of the structures reveal that they are composed of bundled nanotubes typically 400 nm – 1 micron long. Large-area laser patterning of the film allows for structuring of the film without detrimental decreases in conductivity.

Type
Research Article
Copyright
Copyright © Materials Research Society 2011

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References

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