Abstract
Variations in the shape of a tungsten carbide emitter under the simultaneous action of strong electric fields and high temperatures have been studied by field emission microscopy techniques. Using controlled decrease in the applied electric field strength at a certain temperature of the emitter, it is possible to grow a single nanodimensional surface protrusion capable of emitting charged particles with stability comparable to that of carbon-based materials. The values of emission currents, current densities, emission angles, and reduced brightnesses are comparable to those known for emitters based on carbon nanotubes. Advantages of single nanoprotrusions as emitters are their complete reproducibility and the ability to emit both electrons and ions
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Original Russian Text © O.L. Golubev, 2009, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2009, Vol. 35, No. 12, pp. 18–24.
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Golubev, O.L. Single nanodimensional emitting protrusion on the surface of a tungsten carbide field emitter. Tech. Phys. Lett. 35, 545–547 (2009). https://doi.org/10.1134/S1063785009060182
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DOI: https://doi.org/10.1134/S1063785009060182