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- Title
Microwave devices: Carbon nanotubes as cold cathodes.
- Authors
Teo, Kenneth B. K.; Minoux, Eric; Hudanski, Ludovic; Peauger, Franck; Schnell, Jean-Philippe; Gangloff, Laurent; Legagneux, Pierre; Dieumegard, Dominique; Amaratunga, Gehan A. J.; Milne, William I.
- Abstract
To communicate, spacecraft and satellites rely on microwave devices, which at present are based on relatively inefficient thermionic electron sources that require heating and cannot be switched on instantaneously. Here we describe a microwave diode that uses a cold-cathode electron source consisting of carbon nanotubes and that operates at high frequency and at high current densities. Because it weighs little, responds instantaneously and has no need of heating, this miniaturized electron source should prove valuable for microwave devices used in telecommunications.
- Subjects
COLD cathode tubes; MICROWAVE devices; NANOTUBES; MICROWAVES; THERMIONIC emission; CARBON; FULLERENES; NUCLEAR counters
- Publication
Nature, 2005, Vol 437, Issue 7061, p968
- ISSN
0028-0836
- Publication type
Article
- DOI
10.1038/437968a