Noise-enhanced field emission current from a carbon nanotube cantilever

Y. Tadokoro; K. Funayama; H. Tanaka

Noise-enhanced field emission current from a carbon nanotube cantilever

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Author(s): Y. Tadokoro¹ ; K. Funayama¹ ; H. Tanaka¹
- Affiliations: 1: TOYOTA Central R&D Lab., Inc. , Nagakute , Japan
Source: Volume 54, Issue 12, 14 June 2018, p. 770 – 772
DOI: 10.1049/el.2018.0881 , Print ISSN 0013-5194, Online ISSN 1350-911X

Received 14/03/2018, Published 09/05/2018

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.

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Noise-enhanced field emission current from a carbon nanotube cantilever

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