title: Carbon nanotubes: measuring dispersion and length.
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.
authors.affiliation: Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA. Jeffrey.fagan@nist.gov
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Fagan
authors.forename: Barry J
authors.initials: BJ
authors.lastname: Bauer
authors.forename: Erik K
authors.initials: EK
authors.lastname: Hobbie
authors.forename: Matthew L
authors.initials: ML
authors.lastname: Becker
authors.forename: Angela R
authors.initials: AR
authors.lastname: Hight Walker
authors.forename: Jeffrey R
authors.initials: JR
authors.lastname: Simpson
authors.forename: Jaehun
authors.initials: J
authors.lastname: Chun
authors.forename: Jan
authors.initials: J
authors.lastname: Obrzut
authors.forename: Vardhan
authors.initials: V
authors.lastname: Bajpai
authors.forename: Fred R
authors.initials: FR
authors.lastname: Phelan
authors.forename: Daneesh
authors.initials: D
authors.lastname: Simien
authors.forename: Ji Yeon
authors.initials: JY
authors.lastname: Huh
authors.forename: Kalman B
authors.initials: KB
authors.lastname: Migler
mesh_terms: D000818:Animals; D002460:Cell Line; D004247:DNA / Q000737:chemistry; D004553:Electric Conductivity; D004581:Electronics; D006801:Humans; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010316:Particle Size; D013050:Spectrometry, Fluorescence
chemical_list: D037742:Nanotubes, Carbon; D004247:DNA