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Carbon Nanotubes: Measuring Dispersion and Length

Authors

  • Jeffrey A. Fagan,

    Corresponding author
    1. Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
    • Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
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  • Barry J. Bauer,

    1. Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
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  • Erik K. Hobbie,

    1. Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
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  • Matthew L. Becker,

    1. Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
    Current affiliation:
    1. Present Address: Department of Polymer Science, University of Akron, Akron, Ohio 44325, USA
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  • Angela R. Hight Walker,

    1. Optical Technology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
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  • Jeffrey R. Simpson,

    1. Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
    Current affiliation:
    1. Present Address: Physics Department, Towson University, Towson, MD 21252, USA
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  • Jaehun Chun,

    1. Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
    Current affiliation:
    1. Present Address: Pacific Northwest National Lab, 902 Battelle Blvd., P.O. Box 999, Richland, WA 99352, USA
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  • Jan Obrzut,

    1. Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
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  • Vardhan Bajpai,

    1. Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
    Current affiliation:
    1. Present Address: Seldon Technologies Inc., Windsor, VT 05089, USA
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  • Fred R. Phelan,

    1. Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
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  • Daneesh Simien,

    1. Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
    Current affiliation:
    1. Present Address: Mechanical and Aerospace Engineering Department, West Virginia University, Morgantown, WV 26506, USA
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  • Ji Yeon Huh,

    1. Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
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  • Kalman B. Migler

    1. Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
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Abstract

Advanced technological uses of single-walled carbon nanotubes (SWCNTs) rely on the production of single length and chirality populations that are currently only available through liquid-phase post processing. The foundation of all of these processing steps is the attainment of individualized nanotube dispersions in solution. An understanding of the colloidal properties of the dispersed SWCNTs can then be used to design appropriate conditions for separations. In many instances nanotube size, particularly length, is especially active in determining the properties achievable in a given population, and, thus, there is a critical need for measurement technologies for both length distribution and effective separation techniques. In this Progress Report, the current state of the art for measuring dispersion and length populations, including separations, is documented, and examples are used to demonstrate the desirability of addressing these parameters.

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