title: Chirality-dependent transport in double-walled carbon nanotube assemblies: the role of inner tubes.
abstract: A fundamental understanding of the electrical properties of carbon nanotubes is vital when fabricating high-performance polymeric composites as well as transparent conductive films. Herein, the chirality-dependent transport mechanisms in peapod- and chemical vapor deposition-grown double-walled carbon nanotubes (DWNTs) films are discussed by identifying the chiralities of the inner and the outer tubes using fast Fourier transform image processing, as well as optical studies (e.g., Raman, UV, and photoluminescence spectroscopies). The observed conduction mechanisms are strongly dependent on the total fraction of the metallic inner and outer tubes within the DWNT samples. Furthermore, the contribution of the inner tubes to the electronic transport properties of DWNT films is confirmed by photochemically deactivating the outer tubes in both types of DWNT samples.
authors.affiliation: Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano-shi, Japan.
authors.forename: Kazunori
authors.initials: K
authors.lastname: Fujisawa
authors.forename: Keita
authors.initials: K
authors.lastname: Komiyama
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Muramatsu
authors.forename: Daisuke
authors.initials: D
authors.lastname: Shimamoto
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Tojo
authors.forename: Yoong Ahm
authors.initials: YA
authors.lastname: Kim
authors.forename: Takuya
authors.initials: T
authors.lastname: Hayashi
authors.forename: Morinobu
authors.initials: M
authors.lastname: Endo
authors.forename: Kyoichi
authors.initials: K
authors.lastname: Oshida
authors.forename: Mauricio
authors.initials: M
authors.lastname: Terrones
authors.forename: Mildred S
authors.initials: MS
authors.lastname: Dresselhaus