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

Xiuyuan Shao; Anjam Khursheed

doi:10.20944/preprints201805.0142.v2

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preprints.org > chemistry and materials science > nanotechnology > doi: 10.20944/preprints201805.0142.v2

Preprint Review Version 2 Preserved in Portico This version is not peer-reviewed

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

Xiuyuan Shao

and

Anjam Khursheed

Version 1 : Received: 9 May 2018 / Approved: 9 May 2018 / Online: 9 May 2018 (08:52:08 CEST)
Version 2 : Received: 28 May 2018 / Approved: 28 May 2018 / Online: 28 May 2018 (09:02:44 CEST)

A peer-reviewed article of this Preprint also exists.

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

Abstract

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.

Keywords

graphene; cold field emission; single-tip cathode; electron microscopy

Subject

Chemistry and Materials Science, Nanotechnology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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