Wide-range Vacuum Measurements from MWNT Field Emitters Grown Directly on Stainless Steel Substrates.
Wide-range Vacuum Measurements from MWNT Field Emitters Grown Directly on Stainless Steel Substrates.
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利用直接生长在不锈钢基板上的 MWNT 场发射体进行宽范围真空测量
DOI：
10.1186/s11671-015-1207-6
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发表时间：
2016-12
影响因子：
--
通讯作者：
Dong C
中科院分区：
文献类型：
--
作者：
Zhang J;Li D;Zhao Y;Cheng Y;Dong C
研究了直接生长在催化不锈钢衬底上的多壁碳纳米管(MWNTs)的场发射特性和真空测量应用。经过酸处理后的多壁碳纳米管发射体具有优良的发射性能。MWNT压力计能够在极高真空(XHV)范围内工作，在10−11到10−6 Torr的宽范围内具有线性测量性能。尝试了一种具有改进的量规灵敏度的调制栅格。压力下限的扩展在很大程度上归因于多壁碳纳米管的直接生长和合理的电子源设计导致的低放气效应。本文的在线版本(doi：10.1186/s11671-0151207-6)包含补充材料，授权用户可以使用。
The field emission properties and the vacuum measurement application are investigated from the multi-walled carbon nanotubes (MWNTs) grown directly on catalytic stainless steel substrates. The MWNT emitters present excellent emission properties after the acid treatment of the substrate. The MWNT gauge is able to work down to the extreme-high vacuum (XHV) range with linear measurement performance in wide range from 10−11 to 10−6 Torr. A modulating grid is attempted with improved gauge sensitivity. The extension of the lower pressure limit is attributed largely to low outgassing effect due to direct growth of MWNTs and justified design of the electron source. The online version of this article (doi:10.1186/s11671-015-1207-6) contains supplementary material, which is available to authorized users.