Preprint Review Version 2 This version is not peer-reviewed

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

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.

Journal reference: Appl. Sci. 2018, 8, 868
DOI: 10.3390/app8060868

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.

Subject Areas

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

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