公开(公告)号：US08766522B1

公开(公告)日：2014-07-01

申请号：US13105249

申请日：2011-05-11

Applicant: Steven B Fairchild ,  Benji Maruyama

Inventor： Steven B Fairchild ,  Benji Maruyama

IPC: H01J1/14 ,  H01J1/304 ,  H01J29/46 ,  H01J1/28

CPC classification number: H01J1/28 ,  H01J1/304 ,  H01J1/3042 ,  H01J9/025 ,  H01J11/40 ,  H01J25/34 ,  H01J29/467 ,  H01J2201/304 ,  H01J2201/3043 ,  H01J2201/30469 ,  H01J2329/0431 ,  H01J2329/0455

Abstract: Improved field emission cathodes comprise a fiber of highly aligned and densely packed single-wall carbon nanotubes, double-wall carbon nanotubes, multi-wall carbon nanotubes, grapheme nanoribbons, carbon nanofibers, and/or carbon planar nanostructures. The fiber cathodes provide superior current carrying capacity without degradation or adverse effects under high field strength testing. The fibers also can be configured as multi-fiber field emission cathodes, and the use of low work function coatings and different tip configurations further improves their performance.

Abstract translation: 改进的场发射阴极包括高度排列和密集堆叠的单壁碳纳米管，双壁碳纳米管，多壁碳纳米管，图形纳米带，碳纳米纤维和/或碳平面纳米结构的纤维。 纤维阴极在高场强测试下提供卓越的载流能力而不降解或不利影响。 纤维也可以配置为多纤维场发射阴极，并且使用低功函数涂层和不同尖端配置进一步提高其性能。