TITLE

Production and measurements of individual single-wall nanotubes and small ropes of carbon

AUTHOR(S)
Arepalli, Sivaram; Nikolaev, Pavel; Holmes, William; Files, Bradley S.
PUB. DATE
March 2001
SOURCE
Applied Physics Letters;3/12/2001, Vol. 78 Issue 11, p1610
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This work focuses on the size and spatial dependence of single-wall carbon nanotubes produced by the pulsed-laser vaporization technique. The study indicates that very long (tens of microns) individual nanotubes form in the vicinity of the target, and subsequently coalesce into bundles. The role of the inner flow tube is confirmed to restrict plume expansion and improve interactions between carbon atoms resulting in nanotube and rope formation. The effect of the flowing buffer gas seems to influence the dispersion of particulate contaminant material in the nanotube product. More particulate matter is produced at lower oven temperatures. © 2001 American Institute of Physics.
ACCESSION #
4715086

 

Related Articles

  • Nanostructure fabrication by reactive-ion etching of laser-focused chromium on silicon. McClelland, J.J.; Gupta, R.; Celotta, R.J.; Porkolab, G.A. // Applied Physics B: Lasers & Optics;1998, Vol. 66 Issue 1, p95 

    Abstract. We have fabricated chromium nanostructures on silicon by laser-focused atomic deposition and have further processed these structures by reactive-ion etching in an SF[sub 6] plasma. We show that the result can be an array of parallel wires as narrow as 68 nm or an array of parallel Si...

  • Observation of Fractal Nanoclusters on the Pulsed Laser Deposition of Gold. Borman, V. D.; Zenkevich, A. V.; Pushkin, M. A.; Tronin, V. N.; Troyan, V. I. // JETP Letters;6/10/2001, Vol. 73 Issue 11, p604 

    The results of studying the fractal structure of Au clusters arising in pulsed laser deposition under conditions of strong deviations from thermodynamic equilibrium are presented. A mechanism is suggested in which the formation of fractal nanoclusters is considered as a result of the decay of a...

  • Optical and structural studies of Ge nanocrystals embedded in AlN matrix fabricated by pulsed... Hassan, K.M.; Sharma, A.K.; Narayan, J.; Muth, J.F.; Teng, C.W.; Kolbas, R.M. // Applied Physics Letters;8/30/1999, Vol. 75 Issue 9, p1222 

    Discusses the fabrication of germanium (Ge) nanostructures buried in a matrix of aluminum nitride grown on silicon (111) by pulsed laser deposition at a substrate temperature. Characterization of the structures using high-resolution transmission electron microscopy, photoluminescence and Raman...

  • Self-assembly of well-aligned gallium-doped zinc oxide nanorods. Yan, M.; Zhang, H.T.; Widjaja, E.J.; Chang, R.P.H. // Journal of Applied Physics;10/15/2003, Vol. 94 Issue 8, p5240 

    Highly oriented Ga-doped ZnO nanorod arrays have been fabricated on GaN and sapphire substrates by pulsed laser deposition. X-ray diffraction shows that these nanorods are grown epitaxially with the c-axis normal to the substrate. The ZnO nanorod formation proceeds as follows. After a wetting...

  • Artificially nanostructured Cu:Al[sub 2] O[sub 3] films produced by pulsed laser deposition. Serna, R.; Afonso, C.N.; Ricolleau, C.; Wang, Y.; Zheng, Y.; Gandais, M.; Vickridge, I. // Applied Physics A: Materials Science & Processing;2000, Vol. 71 Issue 5, p583 

    Abstract. The processes leading to the formation of Cu:Al[sub 2]O[sub 3] composite films on Si (001) with a well defined nanostructure by alternate pulsed laser deposition (a-PLD) in vacuum are investigated. Alternately amorphous Al[sub 2]O[sub 3] layers and Cu nanocrystals nucleated on the...

  • Laser Micro Machining of Medical Devices. Rausch, Y. // Medical Device Technology;May/Jun2009, Vol. 20 Issue 3, p29 

    Excimer and increasingly ultra-short-pulsed lasers are important tools in the creation of microstructures and nanostructures. Capabilities of the latest systems are described, which include drilling 30-μm diameter holes in 50 to 100 μm thick metal foils and subsurface engraving of...

  • Transmission electron energy-loss spectroscopy study of carbon nanotubes upon high temperature treatment. Reed, B. W.; Sarikaya, M.; Dalton, L. R.; Bertsch, G. F. // Applied Physics Letters;5/21/2001, Vol. 78 Issue 21, p3358 

    Two batches of carbon nanotube materials, grown with a pulsed-laser deposition technique but purified and heat treated under different conditions, are investigated with a combination of high- resolution transmission electron microscopy techniques, including electron nanodiffraction and low-loss...

  • Modification of quantum dots in Ge/Si nanostructures by pulsed laser irradiation. Volodin, V. A.; Yakimov, A. I.; Dvurechenskiĭ, A. V.; Efremov, M. D.; Nikiforov, A. I.; Gatskevich, E. I.; Ivlev, G. D.; Mikhalev, G. Yu. // Semiconductors;Feb2006, Vol. 40 Issue 2, p202 

    The goal of this study was the development of a method for the modification of a quantum dot (QD) structure in Ge/Si nanostructures by pulsed laser irradiation. The GexSi1− x QD structures were analyzed using data furnished by Raman spectroscopy. Frequency-dependent admittance...

  • High coercivity in nanostructured Co-ferrite thin films. Yin, J. H.; Liu, B. H.; Ding, J.; Wang, Y. C. // Bulletin of Materials Science;2006, Vol. 29 Issue 6, p573 

    Three methods including sol-gel, rf sputtering and pulsed laser deposition (PLD) have been used for the fabrication of high coercivity Co-ferrite thin films with a nanocrystalline structure. The PLD method is demonstrated to be a possible tool to achieve Co-ferrite films with high coercivity and...

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