Effect of plasma parameters on growth and field emission of electrons from cylindrical metallic carbon nanotube surfaces
- Department of Physics, Maharaja Agrasen Institute of Technology, Sector-22, Rohini, Delhi-110086 (India)
The effect of plasma parameters (e.g., electron density and temperature, ion density and temperature, neutral atom density, and temperature) on the growth (without a catalyst), structure, and field emission of electrons from a cylindrical metallic carbon nanotube (CNT) surfaces has been theoretically investigated. A theoretical model of charge neutrality, including the kinetics of electrons, positively charged ions, and neutral atoms, and the energy balance of the various species in plasma, has been developed. Numerical calculations of the radius of the cylindrical CNT for different CNT number densities and plasma parameters have been carried out for the typical glow discharge plasma parameters. It is found that, on increasing the CNT number density and plasma parameters, the radius of cylindrical CNT decreases and consequently, the field emission factor for the metallic cylindrical CNT surfaces increase.
- OSTI ID:
- 22043435
- Journal Information:
- Physics of Plasmas, Vol. 18, Issue 8; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
77 NANOSCIENCE AND NANOTECHNOLOGY
ATOMS
CARBON
CATALYSTS
CYLINDRICAL CONFIGURATION
DENSITY
ELECTRON DENSITY
ELECTRON TEMPERATURE
ELECTRONS
ENERGY BALANCE
FIELD EMISSION
GLOW DISCHARGES
HEATING
ION TEMPERATURE
IONS
NANOTUBES
PLASMA
PLASMA BEAM INJECTION
PLASMA DENSITY
SURFACES