Application of carbon nanotubes as electrodes in gas discharge tubes
Application of carbon nanotubes as electrodes in gas discharge tubes
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DOI：
10.1063/1.126130
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发表时间：
2000-03-27
影响因子：
4
通讯作者：
Zhou, O
中科院分区：
文献类型：
--
作者：
Rosen, R;Simendinger, W;Zhou, O
燃气管保护装置主要用于电信网络接口设备箱和中心局开关柜，对电信网络的雷电和交流电源交叉故障提供保护。从平均导通电压和运行变异性的角度来看，电流气体放电管（GDT）保护装置是不可靠的。在不同层间材料的钼电极表面涂覆单壁碳纳米管，分析其电子场发射和放电性能。在电极间距为1mm的纳米管基GDTs中，观察到平均直流击穿电压为448.5 V， 100次浪涌的标准差为4.8 V。击穿可靠性提高4-20倍，击穿电压比两种商用产品低30%左右。性能的增强表明，纳米管基GDTs是先进电信网络中有吸引力的过电压保护单元。(C) 2000年美国物理研究所。[s0003 - 6951(00) 03613 - 5]。
Gas-tube protector units are used in telecom network interface device boxes and central office switching gears to provide protection from lightning and alternating current power cross faults on the telecom network. Current gas discharge tube (GDT) protector units are unreliable from the standpoint of mean turn-on voltage and run-to-run variability. Molybdenum electrodes with various interlayer materials were coated with single-walled carbon nanotubes and analyzed for both electron field emission and discharge properties. A mean direct current breakdown voltage of 448.5 V and a standard deviation of 4.8 V over 100 surges were observed in nanotube-based GDTs with 1 mm gap spacing between the electrodes. The breakdown reliability is a factor of 4-20 better and the breakdown voltage is similar to 30% lower than the two commercial products measured. The enhanced performance shows that nanotube-based GDTs are attractive overvoltage protection units in advanced telecom networks. (C) 2000 American Institute of Physics. [S0003-6951(00)03613-5].