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Langmuir 2008, 24, 13880-13889
Centrifugal Length Separation of Carbon Nanotubes Jeffrey A. Fagan,*,† Matthew L. Becker,† Jaehun Chun,†,§ Pingting Nie,† Barry J. Bauer,† Jeffrey R. Simpson,‡,| Angela Hight-Walker,‡ and Erik K. Hobbie Polymers DiVision and Physics Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 ReceiVed May 5, 2008. ReVised Manuscript ReceiVed October 1, 2008 Separation of single-wall carbon nanotubes (SWCNTs) by length via centrifugation in a high density medium, and the characterization of both the separated fractions and the centrifugation process are presented. Significant quantities of the separated SWCNTs ranging in average length from
