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Carbon Nanotube Field Emission Devices
IB-1194

APPLICATIONS OF TECHNOLOGY:

ADVANTAGES:

ABSTRACT:

Novel field emission sources using carbon nanotubes have been developed by Berkeley Lab researchers Alex Zettl and Marvin Cohen. The Berkeley Lab technology overcomes problems currently associated with field emission devices (FEDs).

The new nanotube field emission sources are insensitive to distance between cathode and tip, an important feature that allows for larger fabrication and operation tolerances. FEDs based on the Berkeley Lab design will run at lower voltages and operate at vacuums three orders of magnitude lower than earlier devices. The field emission sources are robust; a form of self-regeneration enables them to withstand virtually all damage. Their straightforward method of production makes commercial fabrication feasible. Potential applications include mobile computing and communication devices, LCDs, electrostatic scrubbers for industrial air pollution control, and any applications requiring high local electrical fields.

STATUS: U.S. Patent # 6,057,637. Available for licensing

SEE THESE OTHER BERKELEY LAB TECHNOLOGIES IN THIS FIELD:

Boron-Carbon-Nitrogen Nanoparticles and Nanotubes, IB-1079

Boron Nitride Nanotubes with Modified Surfaces, IB-2332

Branched 3-D Inorganic Nanocrystals for Biological Imaging and Electronics Applications, IB-1773

REFERENCE NUMBER: IB-1194

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Last updated: 02/15/2011