Very large current density from carbon nanotube field emitters

@article{Zhu1999VeryLC,
  title={Very large current density from carbon nanotube field emitters},
  author={Weibin Zhu and C. A. Bower and Otto Zhou and Greg Kochanski and S. Jin},
  journal={International Electron Devices Meeting 1999. Technical Digest (Cat. No.99CH36318)},
  year={1999},
  pages={705-708}
}
Field emitters made from carbon nanotubes exhibit excellent macroscopic emission properties; they can operate at a very large current density, as high as 4 A/cm/sup 2/. At electric fields as low as 4-7 V//spl mu/m, they emit technologically useful current densities of 10 mA/cm/sup 2/. The emission originates from nanotube ends with a characteristic structured ring pattern. 
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