Single-atom coherent field electron emitters for practical application to electron microscopy: Buildup controllability, self-repairing function and demountable characteristic

E. Rokuta; T. Itagaki; T. Ishikawa; B. L. Cho; H. S. Kuo; T. T. Tsong; C. Oshima

doi:10.1016/j.apsusc.2005.05.075

Single-atom coherent field electron emitters for practical application to electron microscopy: Buildup controllability, self-repairing function and demountable characteristic

E. Rokuta^*, T. Itagaki, T. Ishikawa, B. L. Cho, H. S. Kuo, T. T. Tsong, C. Oshima

^*Corresponding author for this work

Waseda University

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

33 Citations (Scopus)

Abstract

We have fabricated single-atom field emission (FE) tips by annealing Rh-deposited W tips at 900 K, and the FE characteristics were investigated. Due to the formation of the nanotips, the electron beams were confined in a semi-cone angle of 3°, an indication quite different from the conventional FE beams. In repairing-function test where the FE nanotips were intentionally destroyed beforehand, they recovered the peculiar FE characteristics by means of feasible low temperature annealing. Finally, we found that the present nanotips equipped the capability of recovering the unique FE properties even after an exposure to the air. These characteristics are significantly relevant to the practical applications to electron-optics instruments.

Original language	English
Pages (from-to)	3686-3691
Number of pages	6
Journal	Applied Surface Science
Volume	252
Issue number	10
DOIs	https://doi.org/10.1016/j.apsusc.2005.05.075
Publication status	Published - 2006 Mar 15

Keywords

Emountablity
Filed emission
Nanotip
Self-repairing functions

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Condensed Matter Physics

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10.1016/j.apsusc.2005.05.075

Cite this

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title = "Single-atom coherent field electron emitters for practical application to electron microscopy: Buildup controllability, self-repairing function and demountable characteristic",

abstract = "We have fabricated single-atom field emission (FE) tips by annealing Rh-deposited W tips at 900 K, and the FE characteristics were investigated. Due to the formation of the nanotips, the electron beams were confined in a semi-cone angle of 3°, an indication quite different from the conventional FE beams. In repairing-function test where the FE nanotips were intentionally destroyed beforehand, they recovered the peculiar FE characteristics by means of feasible low temperature annealing. Finally, we found that the present nanotips equipped the capability of recovering the unique FE properties even after an exposure to the air. These characteristics are significantly relevant to the practical applications to electron-optics instruments.",

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T1 - Single-atom coherent field electron emitters for practical application to electron microscopy

T2 - Buildup controllability, self-repairing function and demountable characteristic

AU - Rokuta, E.

AU - Itagaki, T.

AU - Ishikawa, T.

AU - Cho, B. L.

AU - Kuo, H. S.

AU - Tsong, T. T.

AU - Oshima, C.

PY - 2006/3/15

Y1 - 2006/3/15

N2 - We have fabricated single-atom field emission (FE) tips by annealing Rh-deposited W tips at 900 K, and the FE characteristics were investigated. Due to the formation of the nanotips, the electron beams were confined in a semi-cone angle of 3°, an indication quite different from the conventional FE beams. In repairing-function test where the FE nanotips were intentionally destroyed beforehand, they recovered the peculiar FE characteristics by means of feasible low temperature annealing. Finally, we found that the present nanotips equipped the capability of recovering the unique FE properties even after an exposure to the air. These characteristics are significantly relevant to the practical applications to electron-optics instruments.

AB - We have fabricated single-atom field emission (FE) tips by annealing Rh-deposited W tips at 900 K, and the FE characteristics were investigated. Due to the formation of the nanotips, the electron beams were confined in a semi-cone angle of 3°, an indication quite different from the conventional FE beams. In repairing-function test where the FE nanotips were intentionally destroyed beforehand, they recovered the peculiar FE characteristics by means of feasible low temperature annealing. Finally, we found that the present nanotips equipped the capability of recovering the unique FE properties even after an exposure to the air. These characteristics are significantly relevant to the practical applications to electron-optics instruments.

KW - Emountablity

KW - Filed emission

KW - Nanotip

KW - Self-repairing functions

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Single-atom coherent field electron emitters for practical application to electron microscopy: Buildup controllability, self-repairing function and demountable characteristic

Abstract

Keywords

ASJC Scopus subject areas

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