Carbon nanotube cathodes as electron sources for microwave amplifiers

Author

Minoux, E. ; Hudanski, L. ; Teo, K.B. ; Groening, O. ; Peauger, F. ; Dieumegard, D. ; Schnell, J.P. ; Gangloff, L. ; Amaratunga, G.A.J. ; Milne, W.I. ; Robertson, J. ; Legagneux, P.

Author_Institution

Thales Res. & Technol., Palaiseau

fYear

2007

fDate

2-5 Aug. 2007

Firstpage

1248

Lastpage

1251

Abstract

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/cm² 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.

Keywords

carbon nanotubes; cathodes; electron beams; electron sources; microwave amplifiers; C; carbon nanotube cathodes; cold cathodes; electron sources; frequency 10 GHz to 100 GHz; high current density beam; low cost amplifiers; microwave amplifier; modulated electron beam; Carbon nanotubes; Cathodes; Electron sources; Fiber reinforced plastics; Microwave amplifiers; Nanotechnology; Virtual reality; Carbon nanotube; field emmission; microwave amplifier; nanotechnology;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology, 2007. IEEE-NANO 2007. 7th IEEE Conference on

Conference_Location

Hong Kong

Print_ISBN

978-1-4244-0607-4

Electronic_ISBN

978-1-4244-0608-1

Type

conf

DOI

10.1109/NANO.2007.4601409

Filename

4601409