TiO2 nanotubes as a cold cathode for x-ray generation

被引：38

作者：

Alivov, Yahya ^{[1
]}

Klopfer, Michael ^{[1
]}

Molloi, Sabee ^{[1
]}

机构：

[1] Univ Calif Irvine, Dept Radiol Sci, Irvine, CA 92697 USA

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 24期

关键词：

cathodes; current density; electrochemistry; electron field emission; nanofabrication; nanotubes; oxidation; titanium compounds; X-ray tubes; CARBON NANOTUBES; FIELD-EMISSION; TUBE;

D O I：

10.1063/1.3454244

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Here we report on an x-ray source based on titanium dioxide (TiO2) nanotubes grown by electrochemical oxidation. From the analysis of current-voltage characteristics of TiO2 electron emitter field emission nature of the current was confirmed. The threshold voltage and field enhancement factors were derived to be similar to 1.8 V/mu m and similar to 8363, respectively. The current density was similar to 4.0 mA/cm(2) at similar to 2.4 V/mu m. The stability tests showed that the current stayed stable within 6% for more than 720 h. TiO2 nanotubes were used as a cold cathode in x-ray tube and it was demonstrated that TiO2 nanotubes could be a good candidate for such applications. (C) 2010 American Institute of Physics. [doi:10.1063/1.3454244]

引用

页数：3

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