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Aligned carbon nanotubes/fibers for applications in vacuum microwave devices
W.I.Milne,K.B.K.Teo,G.A.J.Amaratunga,R.Lacerda,P.Legagneux,G.Pirio,V.Semet,V.Thien Binh 한국물리학회 2004 Current Applied Physics Vol.4 No.5
Carbon nanotubes exhibit extraordinary eld emission properties because of their high electrical conductivity, ideal high aspectratio whisker-like shape for geometrical eld enhancement, and remarkable thermal stability. This paper will describe the PECVDgrowth of vertically aligned arrays of carbon nanotubes which are suitable for use as the electron emitters in a novel type ofmicrowave amplier capable of producing of order 10 W at 30 GHz.
Electron emission from arrays of carbon nanotubes/fibres
W. I. Milne,K. B. K. Teo,M. Chhowalla,G. A. J. Amaratunga,D. Pribat,P. Legagneux,G. Pirio,Vu Thien Binh,V. Semet 한국물리학회 2002 Current Applied Physics Vol.2 No.6
The overall aim of this work is to produce arrays of eld emitting microguns, based on carbon nanotubes, which can be utilised inthe manufacture of large area eld emitting displays, parallel e-beam lithography systems and electron sources for high frequency(MWCNTs) using a dc plasma technique and a Ni catalyst. We will discuss how the density of the carbon nanotube/bres can bevaried by reducing the deposition yield through nickel interaction with a diusion layer or by direct lithographic patterning of the Nicatalyst to precisely dene the position of each nanotube/bre. Details of the eld emission behaviour of the dierent arrays ofMWCNTS will also be presented.. 2002 Published by Elsevier Science B.V.