TITLE

Field electron emission from sputter-induced carbon nanofibers grown at room temperature

AUTHOR(S)
Tanemura, Masaki; Tanaka, J.; Itoh, K.; Fujimoto, Y.; Agawa, Y.; Miao, L.; Tanemura, S.
PUB. DATE
March 2005
SOURCE
Applied Physics Letters;3/14/2005, Vol. 86 Issue 11, p113107
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Graphite, carbon-coated silicon, and carbon-coated nickel surfaces were bombarded with obliquely incident Ar+ ions at room temperature. The sputtered surfaces were covered with conical protrusions, ∼2.5×105 mm-2 or higher in numerical density, and partially aligned single carbon nanofibers (CNFs), ∼20 nm in diameter and 0.3-2 μm in length, grew on the tips. They were characterized by the amorphous nature and the boundaryless structure between the CNF and the conical base. The field electron emission measurements for the CNFs thus grown on the carbon-coated silicon substrate showed the threshold field of 1.8 V/μm with a current density of 1 μA/cm2, and the field enhancement factor was estimated to be 1951 from the Fowler-Nordheim plot assuming the work function of 4.6 eV for graphite. The morphological structure of CNFs grown on conical bases was thought to be effective to reduce the screening effect due to sufficient distance between adjacent CNFs. Thus, the sputter-induced CNFs were concluded to be quite promising as a field electron emission source.
ACCESSION #
16581610

 

Related Articles

  • Electron transfer processes on Au nanoclusters supported on graphite. Jie Shen; Juanjuan Jia; Bobrov, Kirill; Guillemot, Laurent; Esaulov, Vladimir A. // Gold Bulletin;Dec2013, Vol. 46 Issue 4, p343 

    Electron transfer processes play an important role in surface chemistry. This paper presents results of a study of changes in resonant electron transfer processes, as a function of gold cluster sizes, on the example of electron transfer between Li+ ions scattered on Au clusters on highly...

  • Adsorption of potassium on graphite: Work function calculations. Davydov, S. Yu. // Technical Physics Letters;Sep2009, Vol. 35 Issue 9, p847 

    Changes in the charge of adatoms and the substrate work function have been calculated using the Anderson-Newns model for the potassium/graphite system. The results of calculations are in good agreement with the available experimental data. It is established that there is electron transfer from K...

  • Visible light-induced reduction of Ag+ cations in silver hydrosols. Sergeev, B. M.; Sergeev, G. B. // Colloid Journal;Feb2010, Vol. 72 Issue 1, p145 

    It is shown that, in silver hydrosols that are produced by the reduction of metal cations under the action of borohydride and do not contain electron-donor additives, the photoinduced reduction of Ag+ ions and photoinduced oxidation of nanoparticles occur at pH 9.0 and 4.0, respectively. The...

  • On the mechanism for plasma hydrogenation of graphene. Jones, J. D.; Hoffmann, W. D.; Jesseph, A. V.; Morris, C. J.; Verbeck, G. F.; Perez, J. M. // Applied Physics Letters;12/6/2010, Vol. 97 Issue 23, p233104 

    We report that hydrogenation of mono-, bi-, and trilayer graphene samples via exposure to H2 plasma occurs as a result of electron irradiation of H2O adsorbates on the samples, rather than H species in the plasma as reported by [Elias et al., Science 323, 610 (2009)]. We propose that the...

  • Short-Range Order in Irradiated Diamonds. Agafonov, S. S.; Glazkov, V. P.; Nikolaenko, V. A.; Somenkov, V. A. // JETP Letters;2/10/2005, Vol. 81 Issue 3, p122 

    Using the neutron-diffraction method, it has been established that, when density in irradiated diamonds varies, a transition from a diamond-like amorphous structure to a graphite-like structure occurs. The transition occurs at a density ρ≈2.7–2.9g/cm3 and is accompanied by a...

  • Theoretical investigation of electromechanical effects for graphyne carbon nanotubes. Coluci, V. R.; Galvão, D. S.; Baughman, R. H. // Journal of Chemical Physics;8/15/2004, Vol. 121 Issue 7, p3228 

    We present a theoretical study of the electronic and mechanical properties of graphyne-based nanotubes (GNTs). These semiconducting nanotubes result from the elongation of one-third of the covalent interconnections of graphite-based nanotubes by the introduction of yne groups. The effect of...

  • Anisotropy of graphite optical conductivity. Falkovsky, L. // JETP Letters;Nov2010, Vol. 92 Issue 5, p348 

    The graphite conductivity is evaluated for frequencies between 0.1 eV, the energy of the order of the electronhole overlap, and 1.5 eV, the electron nearest hopping energy. The in-plane conductivity per single atomic sheet is close to the universal graphene conductivity e/4 ħ and, however,...

  • Intrinsic and doped coupled quantum dots created by local modulation of implantation in a silicon nanowire. Pierre, M.; Roche, B.; Wacquez, R.; Jehl, X.; Sanquer, M.; Vinet, M. // Journal of Applied Physics;Apr2011, Vol. 109 Issue 8, p084346 

    We present a systematic study of various ways (top gates, local doping, substrate bias) to fabricate and tune multi-dot structures in silicon nanowire multigate metal-oxide-semiconductor field-effect transistors. The carrier concentration profile of the silicon nanowire is a key parameter to...

  • Evolution of the negative ion composition in the afterglow of a streamer discharge in air. Popov, N. // Plasma Physics Reports;Sep2010, Vol. 36 Issue 9, p812 

    Evolution of the neutral and charged particle compositions in the afterglow of a single streamer channel in atmospheric-pressure air is simulated numerically. It is shown that, in the course of charge-exchange reactions, O ions rapidly transform into ions with a larger electron bound energy...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics