title: Simple and scalable gel-based separation of metallic and semiconducting carbon nanotubes.
abstract: We report a rapid and scalable method for the separation of metallic and semiconducting single-wall carbon nanotubes (SWCNTs); the separation is performed by the selective adsorption of semiconducting SWCNTs on agarose gel. The most effective separation was realized by a simple procedure in which a piece of gel containing SWCNTs and sodium dodecyl sulfate was frozen, thawed, and squeezed. This process affords a solution containing 70% pure metallic SWCNTs and leaves a gel containing 95% pure semiconducting SWCNTs. Field-effect transistors constructed from the separated semiconducting SWCNTs have been demonstrated to function without any electrical breakdown.
authors.affiliation: Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, Ibaraki, Japan. tanaka-t@aist.go.jp
authors.forename: Takeshi
authors.initials: T
authors.lastname: Tanaka
authors.forename: Hehua
authors.initials: H
authors.lastname: Jin
authors.forename: Yasumitsu
authors.initials: Y
authors.lastname: Miyata
authors.forename: Shunjiro
authors.initials: S
authors.lastname: Fujii
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Suga
authors.forename: Yasuhisa
authors.initials: Y
authors.lastname: Naitoh
authors.forename: Takeo
authors.initials: T
authors.lastname: Minari
authors.forename: Tetsuhiko
authors.initials: T
authors.lastname: Miyadera
authors.forename: Kazuhito
authors.initials: K
authors.lastname: Tsukagoshi
authors.forename: Hiromichi
authors.initials: H
authors.lastname: Kataura