Development of New High-Perveance Electron Source by Means of Liquid-Lithium Coarted Field Emitter Array

液锂复合场发射器阵列新型高性能电子源的研制

• 批准号: 12555006
• 负责人: HATA Koichi
• 金额: $ 3.97万
• 依托单位: Mie University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555006/
• 关键词: Field Emission; Electron Source; Taylor Cone; Perveance; Lithium; Carbon Nanotube; Field Emitter Array; Taylor コーン

The purpose of this project is a development of new type high-perveance electron source applying the electrohydrodynamics of liquid lithium, i. e., formation of Taylor cone in a high electric field. To achieve this subject, we performed the depositions of lithium to silicon field emitter arrays (Si-FEA) and multi-wall carbon nanotubes (MWNTs) films prepared by the plasma CVD technique, and tried electron extractions by field emission at a temperature above the melting point of lithium (453K). Reductions of threshold voltage of electron emission and enhancements of emission current were obtained from both samples after the lithium deposition, but the formation of Taylor cones at the tip of Si-FEA and NWNTs couldn't be observed due to an inhomogeneous liquid-lithium films at their surfaces.

本项目的目的是利用液态锂的电流体力学原理，即在高电场中形成泰勒锥，研制一种新型的高电导电子源。为了实现这一目标，我们用等离子体CVD技术沉积了锂硅场发射阵列(Si-FEA)和多壁碳纳米管(MWNTs)薄膜，并尝试了在高于锂熔点(453K)的温度下通过场发射进行电子提取。沉积锂后，两种样品的电子发射阈值电压都有所降低，发射电流有所提高，但由于表面形成了不均匀的液锂薄膜，没有在Si-FEA和NWNTs尖端形成泰勒锥体。

项目成果

K.Hata,A.Takakura,Y.Saito: "Electron Emission from Pentagons on a Carbon Nanotube Tip Revealed by Field Emission Microscopy"Proc.of MRS 2000 Fall Meeting. (印刷中). (2000)

K.Hata、A.Takakura、Y.Saito：“场发射显微镜揭示的碳纳米管尖端的电子发射”Proc.of MRS 2000 秋季会议（2000 年出版）。

K.Hata and others: "Field-Evaporation of Magic Cluster Jons,C^+_<20>, from Carbon Nanotubes"Scripta Materialia. (印刷中).

K. Hata 等人：“来自碳纳米管的 Magic Cluster Jons,C^+_<20> 的场蒸发”Scripta Materialia（正在出版）。

Koichi Hata, Yoshiyuki Kiya, Masashi Ohata and Yahachi Saito: "FIELD-EVAPORATION OF MAGIC CLUSTER IONS, C_<20>^+, FROM CARBON NANOTUBES"Scripta mater.. 44. 1571-1574 (2001)

Koichi Hata、Yoshiyuki Kiya、Masashi Ohata 和 Yahachi Saito：“魔法簇离子的场蒸发，C_<20>^，来自碳纳米管”Scripta mater.. 44. 1571-1574 (2001)

Y.Saito, K.Hata, others: "Perspectives of Fullerene Nanotechnology"Kluwer Academic Publishers. 7 (2002)

Y.Saito、K.Hata 等：“富勒烯纳米技术的展望”Kluwer 学术出版社。

K.Hata,A.Takakura,Y.Saito: "Field Emission from Carbon Nanotubes With Clean Surface and Adsorbed Molecules"Proc.of Int.Symp.on Nanonetwork Materials. (印刷中).

K. Hata、A. Takakura、Y. Saito：“具有清洁表面和吸附分子的碳纳米管的场发射”国际纳米网络材料论文集。