Abstract:
An electron field emitter based on a carbon nanotube is considered as a frequency converter of the voltage applied to its electrodes. This property of the emitter relates to the nonlinear form of the current-voltage characteristic described by the classical Fowler–Nordheim expression. Calculations show that the number of higher harmonics in the spectrum of the emission current increases upon a decrease in the applied voltage and with increasing relative amplitude of the ac signal.
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