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Field Emission Study of Carbon Nanotubes: High Current Density from Nanotube Bundle ArraysWe have investigated the field emission behavior of lithographically patterned bundles of multiwalled carbon nanotubes arranged in a variety of array geometries. Such arrays of nanotube bundles are found to perform significantly better in field emission than arrays of isolated nanotubes or dense, continuous mats of nanotubes, with the field emission performance depending on the bundle diameter and inter-bundle spacing. Arrays of 2-micrometers diameter nanotube bundles spaced 5 micrometers apart (edge-to-edge spacing) produced the largest emission densities, routinely giving 1.5 to 1.8 A/cm(sup 2) at approximately 4 V/micrometer electric field, and greater than 6 A/cm(sup 2) at 20 V/micrometers.
Document ID
20090007663
Acquisition Source
Jet Propulsion Laboratory
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Bronikowski, Micheal J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Manohara, Harish M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Siegel, Peter H.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hunt, Brian D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 24, 2013
Publication Date
September 22, 2004
Subject Category
Solid-State Physics
Report/Patent Number
Paper Number NANO2004-46052
Meeting Information
Meeting: ASME Integrated Nanosystems Conference
Location: Pasadena, CA
Country: United States
Start Date: September 22, 2004
End Date: September 24, 2004
Distribution Limits
Public
Copyright
Other
Keywords
field emissions
field emitter

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