Carbon nanotube cathodes as electron sources for microwave amplifiers

Cold cathodes based on carbon nanotubes allow to produce a modulated electron beam. Using an array of vertically aligned CNs that exhibit an aspect ratio of about 200, we demonstrated the modulation of a high current density beam (~ 1 A/cm 2 at 1.5 and 32 GHz frequencies. Such CN cathodes are very p...

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Bibliographic Details
Main Authors: Minoux, E., Hudanski, L., Teo, K.B.K., Groening, O., Peauger, F., Dieumegard, D., Schnell, J.-P., Gangloff, L., Amaratunga, G.A.J., Milne, W.I., Robertson, J., Legagneux, P.
Format: Conference Proceeding
Language:English
Subjects:
Carbon nanotube
Conferences
field emmission
microwave amplifier
Nanotechnology
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Summary:Cold cathodes based on carbon nanotubes allow to produce a modulated electron beam. Using an array of vertically aligned CNs that exhibit an aspect ratio of about 200, we demonstrated the modulation of a high current density beam (~ 1 A/cm 2 at 1.5 and 32 GHz frequencies. Such CN cathodes are very promising for their use in a new generation of compact, highly efficient and low cost amplifiers that operate between 10 and 100 GHz.
ISSN:1944-9399
1944-9380
DOI:10.1109/NANO.2007.4601409