Open AccessNoise‐enhanced field emission current from a carbon nanotube cantilever
Author(s) -
Tadokoro Y.,
Funayama K.,
Tanaka H.
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2018.0881
Subject(s) - cantilever , carbon nanotube , current (fluid) , noise (video) , voltage , materials science , electronic engineering , current density , carbon nanotube field effect transistor , signal (programming language) , acoustics , computer science , nanotechnology , optoelectronics , electrical engineering , physics , engineering , field effect transistor , image (mathematics) , quantum mechanics , artificial intelligence , composite material , transistor , programming language
Field emission current is widely used to measure various characteristics of nanoscale. In this Letter, a cantilever of a carbon nanotube is focused and the amplification of the current is discussed. Increasing the voltage which induces the current gives the amplification; however, this method results in the large power consumption. This Letter provides the alternative solution with the use of the surrounding noise. Exploiting the non‐linear behaviour of the current and introducing a signal processing of time‐averaging, the amplification is observed. The theoretical discussion provides the concrete theory of the amplification: essentially such an effect is obtained by the modulation of the probability density of the noisy voltage. The numerical results demonstrate the effectiveness of the method.