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In this paper, we report our first experimental findings that evidence the vacuum level in the test chamber can be responsible for variation in the field emission (Fowler-Nordheim) response of an electron source. This situation is exampled using a carbon nanotube sample measured in a parallel plate configuration.
The possibility of use cold cathodes as an electron source in vacuum tube device has been already demonstrated [1]. Using cold cathodes instead of thermionic ones could have many advantages [2], in particular it can increase the efficiency of the tube system since the power consumption of the cathode heater is neglected. For the realization of electron gun with cold cathode an extracting grid near...
In this work, a carbon nanotube-based microtriode has been realized. It is characterized by an emission area covered with carbon nanotubes and an extracting grid integrated on the same substrate. The two are separated with an insulating layer. The DC characteristics were measured both in a diode and in a triode configuration.
A novel vacuum field-emission differential amplifier (diff-amp) based on carbon-nanotube (CNT) emitters has been developed, modeled, and its ac performance characterized. A dual-mask microfabrication process was employed to achieve a single-chip diff-amp by integrating matched CNT field-emission triodes with built-in split gates and integrated anodes. The identical pair of triode amplifiers was well...
A carbon nanotubes cathode was prepared by chemical vapor deposition (CVD) method on silicon substrate, and a field emission display with the carbon nanotubes cathode was fabricated by the vacuum-fluorescent-display-like package processes. Both the power supply voltage and the device voltage were measured at the same time. Very ideal current-voltage characteristic and luminance - voltage characteristic...
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