TITLE

Nanocrystalline diamond from carbon nanotubes

AUTHOR(S)
Sun, L. T.; Gong, J. L.; Zhu, Z. Y.; Zhu, D. Z.; He, S. X.; Wang, Z. X.; Chen, Y.; Hu, G.
PUB. DATE
April 2004
SOURCE
Applied Physics Letters;4/12/2004, Vol. 84 Issue 15, p2901
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Structural phase transformation from multiwalled carbon nanotubes to nanocrystalline diamond by hydrogen plasma post-treatment was carried out. Ultrahigh equivalent diamond nucleation density above 1011 nuclei/cm2 was easily obtained. The diamond formation and growth mechanism was proposed to be the consequence of the formation of sp3 bonded amorphous carbon clusters. The hydrogen chemisorption on curved graphite network and the energy deposited on the carbon nanotubes by continuous impingement of activated molecular or atomic hydrogen are responsible for the formation of amorphous carbon matrix. Diamond nucleates and grows in the way similar to that of diamond chemical vapor deposition processes on amorphous carbon films. © 2004 American Institute of Physics.
ACCESSION #
12754098

 

Related Articles

  • Improvement of luminescence degradation in pure water of nanocrystalline silicon particles covered by a hydrogenated amorphous carbon layer. Sato, Keisuke; Kishimoto, Naoki; Oku, Takahiro; Hirakuri, Kenji // Journal of Applied Physics;7/1/2007, Vol. 102 Issue 1, p014302 

    The stability of luminescence in pure water of surface-modified nanocrystalline silicon (nc-Si) particles has been studied. The surfaces of nc-Si particles were modified with more stable silicon-oxygen (Si-O) and silicon-carbon (Si-C) bonds by the formation of a thin native oxide layer and a...

  • Copper-induced diamond formation in amorphous carbon. Ivanov-Omskii, V. I.; Yastrebov, S. G. // Physics of the Solid State;Oct99, Vol. 41 Issue 10, p1711 

    Diamond formation in hydrogenated amorphous-carbon films containing ultradisperse copper has been studied by measuring IR absorption at two-phonon diamond frequencies. The anomalously high two-phonon absorption observed in the experiments has permitted improving the sensitivity of the method....

  • Bonding and hardness in nonhydrogenated carbon films with moderate sp... content. Gago, R.; Jimenez, I. // Journal of Applied Physics;6/1/2000, Vol. 87 Issue 11, p8174 

    Presents a study which tested an amorphous carbon films with hydrogen by evaporation of graphite with ion bombardment. Results; Discussion; Conclusions.

  • Electron–electron interaction effects in multiwall carbon nanotubes. Tkachev, E. N.; Romanenko, A. I.; Anikeeva, O. V.; Kuznetsov, V. L.; Usol'tseva, A. N. // Low Temperature Physics;Feb2007, Vol. 33 Issue 2/3, p272 

    The temperature dependence of the electrical conductivity σ and the field dependence of the magnetoresistivity ρ of samples of multiwall catalytic carbon nanotubes containing a small amount of amorphous carbon impurity. Below a temperature of 20 K the observed temperature dependence of the...

  • Estimation of the mechanical strength of nanotube bundle. Nishina, Y.; Maeda, T.; Kasuya, A.; Tohji, K.; Sato, Y. // AIP Conference Proceedings;2001, Vol. 590 Issue 1, p161 

    Mechanical strength of a nanotube bundle has been measured by using quartz glass enclosed-purified SWNTs as the specimen. These specimens were prepared by fast stretching quartz glass tube that contained purified nanotube bundles, at temperatures ranging from 900 to 1490 degrees Centigrade. The...

  • Model of the competitive growth of amorphous carbon and diamond films. Ford, I. J. // Journal of Applied Physics;7/1/1995, Vol. 78 Issue 1, p510 

    Presents a model for the competitive growth of amorphous carbon and diamond films. Solutions to the equations in the amorphous and crystalline growth regimes; Properties of amorphous carbon and diamond films; Processes involved in the film deposition.

  • Smoothness of diamondlike carbon films caused by erosion.  // Advanced Materials & Processes;Dec2005, Vol. 163 Issue 12, p19 

    The article reports that successive layers of atoms erode the rough surface caused the smoothness of the amorphous diamondlike carbon films says researchers. With a low coefficient of friction, a study has shown that atoms strike the surface and tend to fill in lower areas and break off the...

  • Physical model for the growth of amorphous carbon nanotubes. Zhao, T. K.; Li, G. M.; Liu, L. H.; Liu, Y. N.; Li, T. H. // Applied Physics Letters;4/18/2011, Vol. 98 Issue 16, p163111 

    A physical model for the growth mechanism of amorphous carbon nanotubes (ACNTs) (namely, 'open tips growth and carbon clusters (Cn,n>6) adding') has been proposed in this letter. Based on Tersoff-Brenner [Phys. Rev. B 37, 6991 (1988) and Phys. Rev. B 42, 9458 (1990)] and Lennard-Jones potential...

  • Nanocomposite nc-TiC/a-C thin films for electrical contact applications. Lewin, Erik; Wilhelmsson, Ola; Jansson, Ulf // Journal of Applied Physics;9/1/2006, Vol. 100 Issue 5, p054303 

    Thin film nanocomposites of nanocrystalline TiC embedded in a matrix of amorphous carbon have been prepared by nonreactive unbalanced dc-magnetron sputtering. These samples have been tested as coating materials for electrical contacts and show great potential as an alternative to traditional...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics