Abstract
The manufacture of a liquid metal ion source based on carbon nanotubes is described.Multi-wall carbon nanotubes were attached to the tip of a tungsten needle forming a fibrewhich was subsequently coated with a layer of indium. The onset of ion emission wasobserved at about 850 V, a value much lower than that for a conventional indium needleemitter. However, the nanotube fibres degrade rapidly at higher voltages and eventuallydisappear from the needle.
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