AVS 52nd International Symposium
    Nanometer-Scale Science and Technology Tuesday Sessions
       Session NS-TuP

Paper NS-TuP18
Arrayed Bundles of Carbon Nanotubes for High-Intensity Field Emission: Parametric Studies of Growth and Field Emission

Tuesday, November 1, 2005, 4:00 pm, Room Exhibit Hall C&D

Session: Nanometer Scale Science and Technology Poster Session
Presenter: M.J. Bronikowski, Jet Propulsion Laboratory, California Institute of Technology
Authors: M.J. Bronikowski, Jet Propulsion Laboratory, California Institute of Technology
H.M. Manohara, Jet Propulsion Laboratory, California Institute of Technology
B.D. Hunt, Jet Propulsion Laboratory, California Institute of Technology
Correspondent: Click to Email
We have found that Carbon Nanotubes (CNT) arranged in arrays of bundles give much greater field emission current densities that either isolated CNT or dense mats of CNT, in excess of 1 Amp/cm^2 at fields of less than 4 Volts/micron. As part of ongoing efforts to fabricate high-intensity electron-beam devices based on these arrayed CNT bundles, we have studied CNT bundle growth (by Chemical Vapor Deposition, CVD) as a function of the various CVD processing parameters, and field emission intensity as a function of CNT bundle array geometric parameters such as bundle size, spacing, and CNT length and diameter. Results will be presented from these parametric studies, in which we have optimized both CNT growth and field emission of electrons from arrayed bundles of CNT.