TITLE

Carbon nanotube-enhanced performance of microplasma devices

AUTHOR(S)
Park, S.-J.; Eden, J. G.; Park, K.-H.
PUB. DATE
May 2004
SOURCE
Applied Physics Letters;5/31/2004, Vol. 84 Issue 22, p4481
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Incorporating multiwall carbon nanotubes (CNTs) directly into the cylindrical cathode of Ni screen/BN/Ni microplasma devices significantly improves all device performance parameters—operating and ignition voltages, as well as radiative efficiency. Having a cathode diameter of 200 μm, these devices exhibit operating voltages as much as 30 V (∼22%) lower than those required for an identical structure without CNTs. For Ne pressures of 100–300 Torr, ignition voltages are reduced by 14%–18% with the introduction of CNTs. In contrast, radiative efficiencies in the 300–800 nm spectral region are increased with CNTs by 6%–9% over the entire pressure range studied (200–600 Torr Ne). Voltage–current characteristics for two device configurations suggest that electrons generated within the cathode microcavity by CNT field emission are most effective in impacting device performance. © 2004 American Institute of Physics.
ACCESSION #
13154689

 

Related Articles

  • Elimination of current non-uniformity in carbon nanotube field emitters. Verma, Preeti; Chaturvedi, Poornendu; Rawat, J.; Kumar, Manohar; Pal, Surendra; Bal, Mahesh; Rawal, D. S.; Harsh; Vyas, Hanuman; Ghosal, Partha; Bhatnagar, P. // Journal of Materials Science: Materials in Electronics;Jun2007, Vol. 18 Issue 6, p677 

    Activation of abnormal emitting sites in Carbon Nano Tube (CNT) field emitters and their elimination is reported. CVD grown, patterned CNT was used as cathode for field emission studies. We encountered the problem of current non-uniformity in CNT cathode. This non-uniformity was attributed to...

  • Emission Characteristics of CNT-Based Cathodes. Bocharov, G. S.; Eletskii, A. V.; Pal, A. F.; Pembaum, A. G.; Pichugin, V. V. // AIP Conference Proceedings;2004, Vol. 723 Issue 1, p528 

    There have been measured the current-voltage characteristics (CVC) of electron field emission cathodes fabricated on the basis of single walled carbon nanotubes (SWNT). SWNT’s of 1.2 – 1.5 nm in diameter were produced by the standard arc discharge method using Ni-Cr alloy foil as a...

  • Three-dimensional carbon nanowall field emission arrays. Stratakis, E.; Giorgi, R.; Barberoglou, M.; Dikonimos, Th.; Salernitano, E.; Lisi, N.; Kymakis, E. // Applied Physics Letters;1/25/2010, Vol. 96 Issue 4, p043110 

    This letter reports on the fabrication of regular arrays of three dimensional graphitic structures, by growing carbon nanowalls on forests of conical Si microspikes. The high field enhancement achieved by this hierarchical growth process indicates a potential for electron emission applications....

  • Field enhancement factor for an array of MWNTs in CNT paste. Berdinsky, A. S.; Shaporin, A. V.; Yoo, J.-B.; Park, J.-H.; Alegaonkar, P. S.; Han, J.-H.; Son, G.-H. // Applied Physics A: Materials Science & Processing;Jun2006, Vol. 83 Issue 3, p377 

    The simulation results of the electric field intensity and the enhancement factor, γ, for an individual CNT imaged as a conducting rod is presented. The field enhancement factor, γ̄, for the CNT paste array is evaluated experimentally by varying the cathode-anode (CA) spacing, d. The...

  • Core-Shell Structure of a Silicon Nanorod/Carbon Nanotube Field Emission Cathode. Bohr-Ran Huang; Ying-Kan Yang; Tzu-Ching Lin; Wen-Luh Yang // Journal of Nanomaterials;2012, p1 

    A novel core-shell structure of silicon nanorods/carbon nanotubes (SiNRs/CNTs) is developed for use in field emission cathodes. The CNTs were synthesized on SiNRs, using the Ag-assisted electroless etching technique to form the SiNRs/CNT core-shell structure. This resulting SiNRs/CNT field...

  • Optimization of the parameters of a carbon nanotube-based field-emission cathode. Bocharov, G.; Eletskii, A.; Sommerer, T. // Technical Physics;Apr2011, Vol. 56 Issue 4, p540 

    procedure for optimizing a field-emission cathode based on carbon nanotubes (CNTs) is developed. An array of identical equidistant vertical CNTs is considered. The optimization procedure takes into account the effect of screening of an electric field by neighboring nanotubes by solving a Laplace...

  • A thin film triode type carbon nanotube field emission cathode. Sanborn, Graham; Turano, Stephan; Collins, Peter; Ready, W. // Applied Physics A: Materials Science & Processing;Jan2013, Vol. 110 Issue 1, p99 

    The field electron emission of carbon nanotubes has been heavily studied over the past two decades for various applications, such as in display technologies, microwave amplifiers, and spacecraft propulsion. However, a commercializable lightweight and internally gated electron source has yet to...

  • Field emission of carbon nanotubes grown on carbon cloth. Jo, S. H.; Wang, D. Z.; Huang, J. Y.; Li, W. Z.; Kempa, K.; Ren, Z. F. // Applied Physics Letters;8/2/2004, Vol. 85 Issue 5, p810 

    Field emission from carbon nanotubes grown on carbon cloth has been studied. An extremely low electric field of less than 0.4 V/μm is required to reach an emission current density of 1 mA/cm2. This ultralow operating electric field of carbon nanotubes grown on carbon cloth is mainly due to a...

  • Field emission from carbon nanotube emitters fabricated by the metal intermediation layer. Jeong, Taewon; Heo, Jungna; Lee, Jeonghee; Park, Sanghyun; Jin, Yongwan; Kim, J. M.; Oh, Taesik; Park, Chongwyun; Yoo, Ji-Beom; Gong, Byoungyun; Lee, Naesung; Yu, SeGi // Journal of Applied Physics;9/15/2006, Vol. 100 Issue 6, p064308 

    Multiwalled carbon nanotube (MWNT) emitters fabricated by the metal intermediation process were studied. This was intended to allow strong adhesion and high electrical contact between the cathode electrode and MWNT emitters. The process was performed by hot-pressed bonding of a metal layer to a...

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