TITLE

Carbon nanotube growth for field-emission cathodes from graphite paste using Ar-ion bombardment

AUTHOR(S)
Hunt, Charles E.; Glembocki, Orest J.; Wang, Yu; Prokes, Sharka M.
PUB. DATE
April 2005
SOURCE
Applied Physics Letters;4/18/2005, Vol. 86 Issue 16, p163112
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Multiwall carbon nanotubes (MW-CNT) have been synthesized from solid-phase graphite. The graphite is deposited as a thick-film paste and irradiated with a 1.2 keV flood Ar-ion beam, transforming the graphite surface to a composite of MW-CNT embedded in the graphite matrix. Micro-Raman measurements have verified that the nanotubes are metallic in nature. The technique was used to make printed field-emission cathodes. Emission from these cathodes demonstrates Fowler–Nordheim tunneling characteristics. The irradiated film emits at an extraction field of 5.0 V/μm, which is less than one-sixth of the minimum extraction field of the nonirradiated graphite film, and exhibit lower noise and greater emission uniformity.
ACCESSION #
17227449

 

Related Articles

  • Variable Range Hopping in Carbon Nanotubes. Khan, Zishan H.; Husain, Samina; Husain, M. // Current Nanoscience;Dec2010, Vol. 6 Issue 6, p626 

    Carbon nanotubes exhibit exceptional properties that are a consequence of their symmetric structure. Many properties of carbon nanotubes (CNTs) have been explained in the wider context of materials science, thereby highlighting the contribution from different researchers worldwide in this...

  • Formation and conversion of carbon nanostructures under radiation. Gerasimov, G. // Journal of Engineering Physics & Thermophysics;Sep2010, Vol. 83 Issue 4, p849 

    Consideration has been given to the current status of research on the use of radiation techniques for synthesizing new carbon nanomaterials based on fullerenes, carbon nanotubes, and graphene sheets and their derivatives, which are promising for practical application due to their unique...

  • "Sputtered-atom assembly" of carbon nanostructures during ion bombardment. Wang, Z.; Zhu, F.; Wang, W.; Yu, G.; Ruan, M. // Applied Physics A: Materials Science & Processing;2000, Vol. 71 Issue 3, p353 

    Abstract. We report the observation of a carbon nanostructure grown on a graphite surface by Ar[sup +] ion bombardment. We demonstrate experimentally that, in view of transmission electron microscopy (TEM)-based evidence, some of these carbon nanostructures emerged the whiskerlike protrusion...

  • Thin Fullerene-Containing Films Synthesized by Ion Beam Sputtering of Fullerene Mixtures with Doping Additives in Vacuum. Semenov, A. P.; Semenova, I. A.; Bulina, N. V.; Lopatin, V. A.; Karmanov, N. S.; Churilov, G. N. // Technical Physics Letters;Dec2005, Vol. 31 Issue 12, p1022 

    A new approach to the synthesis of films containing fullerenes and doping elements is described. It is suggested that a cluster mechanism of the target sputtering by accelerated ions makes possible the deposition of fullerenes on a substrate with a certain probability for dopant atoms being...

  • Highly polarized absorption and photoluminescence of stretch-aligned single-wall carbon nanotubes dispersed in gelatin films. Kim, Y.; Minami, N.; Kazaoui, S. // Applied Physics Letters;2/14/2005, Vol. 86 Issue 7, p073103 

    Substantial alignment of isolated individual single-wall carbon nanotubes (SWNTs) has been achieved by mechanically stretching gelatin films filled with homogeneously dispersed SWNTs. Highly polarized absorption and photoluminescence are observed that are attributed to interband optical...

  • Defect-induced negative differential resistance in single-walled carbon nanotubes. Buchs, G.; Ruffieux, P.; Gr#x00F6;ning, P.; Gr#x00F6;ning, O. // Applied Physics Letters;8/18/2008, Vol. 93 Issue 7, p073115 

    The authors report on the observation of a negative differential resistance (NDR) behavior in tunneling spectra recorded on hydrogen and nitrogen plasma-induced atomic defects on semiconducting single-walled carbon nanotubes (SWNTs). The NDR is observed only in the positive bias range of the...

  • Tailoring structure and electrical properties of carbon nanotubes using kilo-electron-volt ions. Wei, B.Q.; D'Arcy-Gall, J.; Ajayan, P.M.; Ramanath, G. // Applied Physics Letters;10/27/2003, Vol. 83 Issue 17, p3581 

    We report the effects of 30 and 50 keV Ga[sup +] ion irradiation on the structure and electrical properties of arc-evaporated multiwalled carbon nanotubes (MWNTs). For 50 keV ions with doses of ∼10[sup 13] ions/cm[sup 2] the outer shells of the MWNTs remain intact, while the inner layers...

  • Energy Distribution of Electrons Field-Emitted from Carbon Nanoemitters. Lobanov, V. M. // Technical Physics;Nov2005, Vol. 50 Issue 11, p1485 

    The height of an extra low-energy maximum in the energy distribution of electrons tunneling from crystalline carbon fibers and carbon nanotubes is studied as a function of emitter heating and emitter rotation relative to the energy analyzer axis. The relationships found are related to emission...

  • Ordering of fullerene and carbon nanotube thin films under energetic ion impact. Kumar, Amit; Avasthi, D. K.; Pivin, J. C.; Koinkar, P. M. // Applied Physics Letters;6/2/2008, Vol. 92 Issue 22, p221904 

    We report the ordering of carbon nanostructures under energetic ion irradiation at low fluence (<5×1011 ions/cm2). Fullerene thin films and multiwalled carbon nanotube (MWCNT) films were irradiated with 200 MeV Au and 60 MeV Ni ions at different ion fluences, respectively. The changes in the...

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