Growth of carbon nanotube field emitters on single strand carbon fiber: A linear electron source

Ha Jin Kim, Min Jong Bae, Yong C. Kim, Eun S. Cho, Y. C. Sohn, D. Y. Kim, S. E. Lee, H. S. Kang, In T. Han, Young H. Kim, Shashikant P. Patole, Ji Beom Yoo

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The multi-stage effect has been revisited through growing carbon nanotube field emitters on single strand carbon fiber with a thickness of 11 μm. A prepared linear electron source exhibits a turn-on field as low as 0.4 V μm-1 and an extremely high field enhancement factor of 19 300, when compared with those results from reference nanotube emitters grown on flat silicone wafer; 3.0 V μm-1 and 2500, respectively. In addition, we introduce a novel method to grow nanotubes uniformly around the circumference of carbon fibers by using direct resistive heating on the continuously feeding carbon threads. These results open up not only a new path for synthesizing nanocomposites, but also offer an excellent linear electron source for special applications such as backlight units for liquid crystal displays and multi-array x-ray sources.

Original languageBritish English
Article number095602
JournalNanotechnology
Volume22
Issue number9
DOIs
StatePublished - 4 Mar 2011

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