Effect of plasma parameters on growth and field emission properties of spherical carbon nanotube tip

Journal Article · Wed Jun 15 00:00:00 EDT 2011 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3595636· OSTI ID:21546975

Sharma, Suresh C; Tewari, Aarti ^[1]

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1. 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 properties of a spherical carbon nanotube (CNT) tip 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 spherical CNT tip for different CNT number densities and plasma parameters have been carried out for the typical glow discharge plasma parameters. It is found that upon an increase in the CNT number density and plasma parameters, the radius of the spherical CNT tip decreases, and consequently the field emission factor for the spherical CNT tip increases.

• OSTI ID: 21546975
• Journal Information: Physics of Plasmas, Vol. 18, Issue 6; Other Information: DOI: 10.1063/1.3595636; (c) 2011 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CARBON
ELECTRON DENSITY
ELECTRON TEMPERATURE
ENERGY BALANCE
FIELD EMISSION
GLOW DISCHARGES
ION DENSITY
ION TEMPERATURE
NANOTUBES
PLASMA
ELECTRIC DISCHARGES
ELEMENTS
EMISSION
NANOSTRUCTURES
NONMETALS