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

^*此作品的通信作者

物理學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

27 引文斯高帕斯（Scopus）

摘要

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.

原文	英語
文章編號	335701
期刊	Nanotechnology
卷	20
發行號	33
DOIs	https://doi.org/10.1088/0957-4484/20/33/335701
出版狀態	已發佈 - 2009 8月 19

ASJC Scopus subject areas

生物工程
一般化學
一般材料科學
材料力學
機械工業
電氣與電子工程

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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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SN - 0957-4484

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JO - Nanotechnology

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ER -

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

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