Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2020 Feb 29;11(3):260. doi: 10.3390/mi11030260

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2020 by the author.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

The CNT-FE cathode on tip: (a) a schematic illustration of the FE cathode on a tip, using a CNT suspension with silver nanoparticles (NPs); (b,d) the FE characteristic of the cathode, the inset—a zoom on a tip with drop-casted suspension; (c) SEM images of the surface of CNT cathode on a tip with various ratios of graphite powder and CNTs; (e) an OM image of the top of CNT-FE cathode (upper view); (e) the photography of the diode configuration, including the FE cathode on a tip (lower view); (f) I–V characteristic of the CNT FED in a triode configuration, and insets shows the simulated result of a collimated electron beam. Figure 11a,b from [2], Figure 11c,d from [116], and Figure 11e,f reprinted with permission from [122].