Abstract
A bulk bundle (with a diameter of about 100 μm) of single-walled nanotubes (SWNTs), which were obtained after a purification process of carbon soot containing SWNTs, was used as an electron emitter. Many spikes of micro-bundles (with a typical diameter of 20-30 nm) of SWNTs extruded from the surface of the bulk emitter. Field emission originating from individual micro-bundles was observed on a fluorescent screen 50 mm apart from the tip. Each micro-bundle of SWNTs gave a corresponding bright spot, but no fine structure was observed within the bright spots. A probe hole device was used to measure an electron current from a single micro-bundle. The Fowler-Nordheim plot of the current and the applied voltage yielded a straight line, confirming the current results from field emission.
Original language | English |
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Pages (from-to) | L1340-L1342 |
Journal | Japanese Journal of Applied Physics, Part 2: Letters |
Volume | 36 |
Issue number | 10 PART A |
Publication status | Published - 1997 Oct 1 |
Keywords
- Carbon nanotube
- Field emission
- Field emission microscopy
- Single-walled nanotubes
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)