Low fluctuation and drift of field emission currents emitted from Pd/W nanotips

Yuta Akamine; Kazuto Fujiwara; Chuhei Oshima; Boklae Cho

doi:10.1116/1.3610166

Low fluctuation and drift of field emission currents emitted from Pd/W nanotips

Yuta Akamine^*, Kazuto Fujiwara, Chuhei Oshima, Boklae Cho

^*Corresponding author for this work

Waseda University

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The authors have observed the fluctuation and drift of field emission (FE) current from nanotips fabricated by the deposition of Pd under extreme high vacuum and subsequent annealing at ∼1000 K. Observed fluctuations of 0.02%-1% for 100 h at ∼10 nA were extremely low when compared with those of conventional FE guns (a few percent). From a practical point of view, drifts in FE current were negligible over several hours. When the Pd layer had been removed by repeated heating and FE operation, Pd redeposition on the tip apex was necessary for their restoration.

Original language	English
Article number	041808
Journal	Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics
Volume	29
Issue number	4
DOIs	https://doi.org/10.1116/1.3610166
Publication status	Published - 2011

ASJC Scopus subject areas

Condensed Matter Physics
Electrical and Electronic Engineering

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abstract = "The authors have observed the fluctuation and drift of field emission (FE) current from nanotips fabricated by the deposition of Pd under extreme high vacuum and subsequent annealing at ∼1000 K. Observed fluctuations of 0.02%-1% for 100 h at ∼10 nA were extremely low when compared with those of conventional FE guns (a few percent). From a practical point of view, drifts in FE current were negligible over several hours. When the Pd layer had been removed by repeated heating and FE operation, Pd redeposition on the tip apex was necessary for their restoration.",

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AU - Akamine, Yuta

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AU - Cho, Boklae

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Y1 - 2011

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AB - The authors have observed the fluctuation and drift of field emission (FE) current from nanotips fabricated by the deposition of Pd under extreme high vacuum and subsequent annealing at ∼1000 K. Observed fluctuations of 0.02%-1% for 100 h at ∼10 nA were extremely low when compared with those of conventional FE guns (a few percent). From a practical point of view, drifts in FE current were negligible over several hours. When the Pd layer had been removed by repeated heating and FE operation, Pd redeposition on the tip apex was necessary for their restoration.

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Low fluctuation and drift of field emission currents emitted from Pd/W nanotips

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