A single-atom sharp iridium tip as an emitter of gas field ion sources

Hong Shi Kuo; Ing Shouh Hwang; Tsu Yi Fu; Ying Siang Hwang; Yi Hsien Lu; Chun Yueh Lin; Jin Long Hou; Tien T. Tsong

doi:10.1088/0957-4484/20/33/335701

A single-atom sharp iridium tip as an emitter of gas field ion sources

Hong Shi Kuo, Ing Shouh Hwang^*, Tsu Yi Fu, Ying Siang Hwang, Yi Hsien Lu, Chun Yueh Lin, Jin Long Hou, Tien T. Tsong

^*Corresponding author for this work

Department of Physics

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

27 Citations (Scopus)

Abstract

We report a reliable method for preparing a pure Ir single-atom tip by thermal treatment in oxygen. The atomic structure of the tip apex and its ion emission characteristics are investigated with field ion microscopy. We have shown that the Ir single-atom tip can be a good field ion emitter, capable of emitting a variety of gas ion beams, such as He⁺, H₂ ⁺, N₂⁺, and O₂⁺, with high brightness and stability. In addition, this tip can easily be maintained and regenerated in vacuum, ensuring it has sufficient lifetime for practical applications.

Original language	English
Article number	335701
Journal	Nanotechnology
Volume	20
Issue number	33
DOIs	https://doi.org/10.1088/0957-4484/20/33/335701
Publication status	Published - 2009 Aug 19

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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abstract = "We report a reliable method for preparing a pure Ir single-atom tip by thermal treatment in oxygen. The atomic structure of the tip apex and its ion emission characteristics are investigated with field ion microscopy. We have shown that the Ir single-atom tip can be a good field ion emitter, capable of emitting a variety of gas ion beams, such as He+, H2 +, N2+, and O2+, with high brightness and stability. In addition, this tip can easily be maintained and regenerated in vacuum, ensuring it has sufficient lifetime for practical applications.",

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AU - Kuo, Hong Shi

AU - Hwang, Ing Shouh

AU - Fu, Tsu Yi

AU - Hwang, Ying Siang

AU - Lu, Yi Hsien

AU - Lin, Chun Yueh

AU - Hou, Jin Long

AU - Tsong, Tien T.

PY - 2009/8/19

Y1 - 2009/8/19

N2 - We report a reliable method for preparing a pure Ir single-atom tip by thermal treatment in oxygen. The atomic structure of the tip apex and its ion emission characteristics are investigated with field ion microscopy. We have shown that the Ir single-atom tip can be a good field ion emitter, capable of emitting a variety of gas ion beams, such as He+, H2 +, N2+, and O2+, with high brightness and stability. In addition, this tip can easily be maintained and regenerated in vacuum, ensuring it has sufficient lifetime for practical applications.

AB - We report a reliable method for preparing a pure Ir single-atom tip by thermal treatment in oxygen. The atomic structure of the tip apex and its ion emission characteristics are investigated with field ion microscopy. We have shown that the Ir single-atom tip can be a good field ion emitter, capable of emitting a variety of gas ion beams, such as He+, H2 +, N2+, and O2+, with high brightness and stability. In addition, this tip can easily be maintained and regenerated in vacuum, ensuring it has sufficient lifetime for practical applications.

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JO - Nanotechnology

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A single-atom sharp iridium tip as an emitter of gas field ion sources

Abstract

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