Analysis of Field Emission Properties of Carbon Nanocoils for Imaging Materials

被引：0

作者：

Yasumoto Konishi

Hiroyoshi Tanaka

Yoshikazu Nakayama

Osamu Suekane

Toshikazu Nosaka

机构：

[1] Department of Physics and Electronics

[2] Osaka Prefecture University

[3] Sakai Osaka -

[4] Japan

[5] Innovation Plaza Osaka

[6] Japan Science and Technology Agency

[7] Izumi

[8] Osaka -

[9] Handai Frontier Research Center

[10] Graduate School of Engineering

[11] Osaka University

[12] Technology Research Institute of Osaka Prefecture

[13] Osaka

来源：

仪器仪表学报 | 2004年 / S3期

关键词：

Carbon nanocoil Field emission Carbon nanotube Finite element method;

D O I：

10.19650/j.cnki.cjsi.2004.s3.026

中图分类号：

TN104.3 [显示材料];

学科分类号：

摘要：

Carbon nanotubes and nanocoils are expected as the charging materials and electron gun for the imaging devices. It is synthesized for carbon nanocoils with different diameters by the catalytic thermal decomposition of acetylene using iron-indium-tin-oxide catalysts. It is found that the turn-on voltage is decreased by decreasing the average diameter of the grown carbon nanocoils. The turn on voltage of as low as 30 V at the electrodes' gap of 130 μm has been achieved when the coil diameter is decreased to 60 nm. The calculation for the concentration of the electric field on the coil surface has been performed using a finite element method. It is obtained that the strength of electric field around the top ring of a coil is increased with the decrease of the tubular diameter of the coil and has a similar value for that at the tip of a carbon nanotube, suggesting that the efficiency of the field emission from nanocoils would be higher than that from nanotubes. These results can explain the good stability of field emission from carbon nanocoils.

引用

页码：72 / 75+115 +115

页数：5

共 12 条

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