e-Journal of Surface Science and Nanotechnology
Online ISSN : 1348-0391
ISSN-L : 1348-0391
Regular Papers
Nanoscale Characterization of an Electron Emitting Tip by Scanning Probe Microscopy
Norimichi WatanabeMiyuki TanakaTetsuo Shimizu
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2014 Volume 12 Pages 377-379

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Abstract

Field emission microscopy is commonly used to observe patterns and intensities of electron emissions and to estimate the average work function from the emission current with respect to the applied voltage (F-N plots). However, it is difficult to observe the nanostructure at the apex of the tip using only field emission microscopy. In this research, we investigated the possibility of characterizing the surface of an electron emitter using scanning probe microscopy (SPM). Adding an optical microscope and a light source to the front side of the SPM system, we succeeded in precisely confirming the relative positions of an SPM cantilever and an electron emitter and in observing the surface structure at the top of an electron emitter in a 5 × 5 μm2 region. SPM and scanning electron microscopy images were compared, and both showed grains and their boundaries. Higher magnification SPM images showed flat and concentric circular ring-shaped planes. [DOI: 10.1380/ejssnt.2014.377]

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この記事はクリエイティブ・コモンズ [表示 4.0 国際]ライセンスの下に提供されています。