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Quantitative measurement of charge accumulation along a quasi-one-dimensional W5O14 nanowire during electron field emission

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Abstract

We use an electron holographic method to determine the charge distribution along a quasi-one-dimensional W5O14 nanowire during in situ field emission in a transmission electron microscope. The results show that the continuous charge distribution along the nanowire is not linear, but that there is an additional accumulation of charge at its apex. An analytical expression for this additional contribution to the charge distribution is proposed and its effect on the field enhancement factor and emission current is discussed.

Graphical abstract: Quantitative measurement of charge accumulation along a quasi-one-dimensional W5O14 nanowire during electron field emission

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Article information


Submitted
27 Jan 2020
Accepted
06 Mar 2020
First published
06 Mar 2020

Nanoscale, 2020, Advance Article
Article type
Paper

Quantitative measurement of charge accumulation along a quasi-one-dimensional W5O14 nanowire during electron field emission

F. Zheng, G. Pozzi, V. Migunov, L. Pirker, M. Remškar, M. Beleggia and R. E. Dunin-Borkowski, Nanoscale, 2020, Advance Article , DOI: 10.1039/D0NR00739K

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