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A Review Paper on “Graphene Field Emission for Electron Microscopy”

by Xiuyuan Shao 1 and Anjam Khursheed 1,2,*
1
Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore
2
Engineering Science Programme, National University of Singapore, 9 Engineering Drive 1, Singapore 117575, Singapore
*
Author to whom correspondence should be addressed.
Appl. Sci. 2018, 8(6), 868; https://doi.org/10.3390/app8060868
Received: 2 May 2018 / Revised: 18 May 2018 / Accepted: 19 May 2018 / Published: 25 May 2018
(This article belongs to the Special Issue Field Emission from Graphene and other Nanostructures)
Although good field emission from graphene has been demonstrated from a wide variety of different microfabricated structures, very few of them can be used to improve the design of cold field emitters for electron microscopy applications. Most of them consist of densely packed nano-emitters, which produce a large array of defocused overlapping electron beams, and therefore cannot be subsequently focused down to a single nanometer electron probe. This paper reviews the kind of single-tip cathode structures suitable in cold field emission guns for instruments such as scanning electron microscopy, transmission electron microscope or scanning transmission electron microscopy, and reviews progress in fabricating them from graphene-based materials. View Full-Text
Keywords: graphene; cold field emission; single-tip cathode; electron microscopy graphene; cold field emission; single-tip cathode; electron microscopy
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MDPI and ACS Style

Shao, X.; Khursheed, A. A Review Paper on “Graphene Field Emission for Electron Microscopy”. Appl. Sci. 2018, 8, 868.

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