Carbon nanotubes as cold cathodes

Kenneth B. K. Teo, Eric Minoux, Ludovic Hudanski, Franck Peauger, Jean-Philippe Schnell, Laurent Gangloff, Pierre Legagneux, Dominique Dieumegard, Gehan A. J. Amaratunga and William I. Milne ()
Additional contact information
Kenneth B. K. Teo: University of Cambridge
Eric Minoux: Thales Research and Technology, RD 128
Ludovic Hudanski: Thales Electron Devices, BP 23
Franck Peauger: Thales Electron Devices, BP 23
Jean-Philippe Schnell: Thales Research and Technology, RD 128
Laurent Gangloff: University of Cambridge
Pierre Legagneux: Thales Research and Technology, RD 128
Dominique Dieumegard: Thales Electron Devices, BP 23
Gehan A. J. Amaratunga: University of Cambridge
William I. Milne: University of Cambridge

Nature, 2005, vol. 437, issue 7061, 968-968

Abstract: 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 nanotubes1 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.

Date: 2005
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DOI: 10.1038/437968a

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