TITLE

Excellent field emission from semialigned carbon nanofibers grown on cylindrical copper surface

AUTHOR(S)
Mahanandia, P.; Arya, V.; Bhotla, P. V.; Subramanyam, S. V.; Schneider, J. J.; Nanda, K. K.
PUB. DATE
August 2009
SOURCE
Applied Physics Letters;8/24/2009, Vol. 95 Issue 8, p083108
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the field emission from carbon nanofibers (CNFs) grown directly on cylindrical copper by a simple pyrolysis technique. The turn-on field is 0.17 V/μm and the emission current density is 0.9 mA/cm2 at 0.35 V/μm. The emission current is stable at a field of 0.35 V/μm and 6.5×10-6 Torr. The excellent field emission behavior is attributed to the sp2 phase in CNFs and the stable emission is due to the direct growth. The direct growth on cylindrical cathode is advantageous for field emission.
ACCESSION #
43944904

 

Related Articles

  • Nano-textured copper oxide nanofibers for efficient air cooling. Seongpil An; Hong Seok Jo; Al-Deyab, Salem S.; Yarin, Alexander L.; Yoon, Sam S. // Journal of Applied Physics;2/14/2016, Vol. 119 Issue 6, p1 

    Ever decreasing of microelectronics devices is challenged by overheating and demands an increase in heat removal rate. Herein, we fabricated highly efficient heat-removal coatings comprised of copper oxide-plated polymer nanofiber layers (thorny devil nanofibers) with high surface-to-volume...

  • Growth and field emission properties of vertically aligned molybdenum–sulfur–iodine nanowires on molybdenum and quartz substrates. Dvorsek, Damjan; Zumer, Marko; Nemanic, Vincenc; Mihailovic, Dragan; Vengust, Damjan // Journal of Applied Physics;Dec2007, Vol. 102 Issue 11, p114308 

    Vertically aligned bundles of molybdenum–sulfur–iodine nanowires (MoSIx) were grown on a molybdenum foil, thin wire, and quartz substrate. By choosing different growth parameters we have been able to vary the surface density from ∼0.01 to 0.5 bundless/μm2 and the length of...

  • ZnO propeller-like nanostructures and the influence of carriers on field emission. Yan, H. L.; Wang, J. B.; Zhong, X. L. // Journal of Materials Science: Materials in Electronics;Jul2011, Vol. 22 Issue 7, p724 

    Propeller-like ZnO nanostructures are fabricated by a physical vapor deposition method. This structure exhibits a good field emission characteristic with a turn-on field of 4.36 V/μm. Cathodoluminescence studies suggest that the high current density in the surface is attributed to the main...

  • Effect of thermal motion of residual gas molecules on the degradation of the field emission cathode based on carbon nanotubes. Bocharov, G.; Eletskii, A. // Technical Physics;Oct2013, Vol. 58 Issue 10, p1512 

    The rate of degradation of carbon nanotubes in an electron field emission cathode is calculated taking into account thermal motion of the residual gas atoms. As the degradation mechanism, we consider the sputtering of the surface of carbon nanotubes by ions formed as a result of ionization of...

  • Study of the Plasma in a Preformed Z-pinch Constriction. Bakshaev, Yu. L.; Blinov, P. I.; Vikhrev, V. V.; Gordeev, E. M.; Dan�ko, S. A.; Korolev, V. D.; Medovshchikov, S. F.; Nedoseev, S. L.; Smirnova, E. A.; Tumanov, V. I.; Chernenko, A. S.; Shashkov, A. Yu. // Plasma Physics Reports;Dec2001, Vol. 27 Issue 12, p1039 

    The development of a preformed constriction in cylindrical agar-agar loads at currents of up to 3 MA is studied experimentally. The loads 3�5 mm in diameter have a mass density of 0.1g/cm[sup 3] and are filled with different materials. Due to the implosion of the constriction to a minimum...

  • Optimal rotary control of the cylinder wake in the laminar regime. Protas, B.; Styczek, A. // Physics of Fluids;Jul2002, Vol. 14 Issue 7, p2073 

    In this paper we develop the Optimal Control Approach to the rotary control of the cylinder wake. We minimize the functional which represents the sum of the work needed to resist the drag force and the work needed to control the flow, where the rotation rate ...(t) is the control variable....

  • Some characteristics of entrainment at a cylindrical turbulence boundary. Mathew, Joseph; Basu, Amit J. // Physics of Fluids;Jul2002, Vol. 14 Issue 7, p2065 

    Over the last 30 years, turbulent entrainment has come to be viewed as a large-scale process, directed by coherent structures, and described as engulfing. With turbulence simulations, we examined the process of entrainment directly, as growth of vorticity and concentration along fluid particle...

  • Flat wormholes from cosmic strings. Clement, Gerard // Journal of Mathematical Physics;Nov97, Vol. 38 Issue 11, p5807 

    Describes the analytical extension of certain cylindrical multi-cosmic string metrics to wormhole spacetimes with only one region at spatial infinity. Geometry of asymptotically Minkowskian wormhole spacetimes generated by one or two cosmic strings; Tendency of the wormholes to lengthen rather...

  • An impulse compression/tension loading technique for microscopic materials strength studies. Fishbine, B. H. // Review of Scientific Instruments;Apr91, Vol. 62 Issue 4, p1015 

    In materials testing it is well known that material strengths depend on: loading rate, whether loading is compressive or tensile and, in some cases, previous loading history; a widely useful loading technique should provide adjustable loading rate and reproducible compressive or tensile loading....

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