| 激光诱导铝基碳纳米管薄膜及场发射性能 |
| |
| 引用本文： | 刘璇,孔龙,王亚荣,李必奎,王世明,张亚非.激光诱导铝基碳纳米管薄膜及场发射性能[J].强激光与粒子束,2015,27(12):124103. |
| |
| 作者姓名： | 刘璇 孔龙 王亚荣 李必奎 王世明 张亚非 |
| |
| 作者单位： | 1.上海海洋大学 工程学院, 上海 201 306; |
| |
| 摘 要： | 结合电泳沉积和激光纳米焊接技术在常温下成功制备了铝基单壁碳纳米管(SWCNTs-Al)薄膜。首先,将单壁碳纳米管电泳沉积到铝片基底上,再使用皮秒脉冲激光构建二者的可靠连接。对SWCNTsAl薄膜进行场发射性能测试,开启电压从焊接前的5.1V/μm降低到2.1V/μm,发射电流密度显著提高且更加稳定。这主要是激光纳米焊接后界面接触阻抗减小,场致电子发射更容易实现的结果。基于SWCNTs-Al薄膜的表面形貌图和场发射性能测试结果,确定了最优的激光纳米焊接参数。
|
| 关 键 词： | 激光纳米焊接 单壁碳纳米管薄膜 阴极 场发射 |
| 收稿时间： | 2015-09-07 |
Laser-induced SWCNTs-Al thin film and field emission property |
| |
| Affiliation: | 1.College of Engineering,Shanghai Ocean University,Shanghai 201306,China;2.Research Institute of Micro/Nanometer Science and Technology,Shanghai Jiao Tong University,Shanghai 200240,China |
| |
| Abstract: | The single-walled carbon nanotubes-Al (SWCNTs-Al) thin film is successfully fabricated by combining the electrophoretic deposition and laser nanowelding technology at room temperature. First, the single-walled carbon nanotubes are deposited onto an Al substrate by electrophoretic deposition, and then a reliable connection is constructed between them by pico-second pulsed laser. The field emission performance test results of the SWCNTs-Al thin film show that the turn-on voltage decreases from 5.1 V/m to 2.1 V/m, and the emission current increases significantly and becomes more stable. This is mainly due to the reduction of contact resistance in welding area and easily moving electrons for field emission after laser nanowelding. Based on the surface topography and the field emission property testing results of the SWCNTs-Al thin film, the optimal laser nanowelding parameters are determined, which are important for the development of nanowelding technology and the large-scale production of nano-devices with ultra-high performance. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《强激光与粒子束》浏览原始摘要信息 |
|
点击此处可从《强激光与粒子束》下载全文 |
|
