title: Bond strength of individual carbon nanotubes grown directly on carbon fibers.
abstract: The performance of carbon nanotube (CNT)-based devices strongly depends on the adhesion of CNTs to the substrate on which they were directly grown. We report on the bond strength of CNTs grown on a carbon fiber (T700SC Toray), measured via in situ pulling of individual CNTs inside a transmission electron microscope. The bond strength of an individual CNT, obtained from the measured pulling force and CNT cross-section, was very high (∼200 MPa), 8-10 times higher than that of an adhesion model assuming only van der Waals interactions (25 MPa), presumably due to carbon-carbon interactions between the CNT (its bottom atoms) and the carbon substrate.
authors: Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, 1 Gwanangno, Gwanak-gu, Seoul 151-742, Korea.
authors: Kyoung Ju
authors: KJ
authors: Kim
authors: Geunsung
authors: G
authors: Lee
authors: Sung-Dae
authors: SD
authors: Kim
authors: Seong-Il
authors: SI
authors: Kim
authors: Ji Ho
authors: JH
authors: Youk
authors: Jinyong
authors: J
authors: Lee
authors: Young-Woon
authors: YW
authors: Kim
authors: Woong-Ryeol
authors: WR
authors: Yu