Open AccessJournal Article
Field Emission of Silicon Nanowires
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TLDR
In this paper, the field emission of single crystal silicon nanowires of 100nm in diameter grown at 480°C from silane using Au as catalyst has been investigated, and an emission current density of 1mA∕cm2 over a 0.2cm2 area was obtained at an electric field of 3.4V∕μm with a turn-on field of 2V∆μm at 0.01mA∆cm2.Abstract:
Field emission of single crystal silicon nanowires of 100nm in diameter grown at 480°C from silane using Au as catalyst has been investigated. An emission current density of 1mA∕cm2 over a 0.2cm2 area was obtained at an electric field of 3.4V∕μm with a turn-on field of 2V∕μm at 0.01mA∕cm2. The annealing of the as-grown samples at 550°C in vacuum has drastically improved the field emission performance. The low growth and annealing temperatures make the process applicable to glass substrates.read more
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References
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Journal ArticleDOI
A Carbon Nanotube Field-Emission Electron Source
TL;DR: In this paper, a high-intensity electron gun based on field emission from a film of aligned carbon nanotubes has been made, which consists of a nanotube film with a 1-millimeter-diameter grid about 20 micrometers above it.
Journal ArticleDOI
Physical properties of thin‐film field emission cathodes with molybdenum cones
TL;DR: In this article, the emission originates from the tip of molybdenum cones that are about 1.5 micron tall with a tip radius around 500 A. The emission is generated by only one or a few atomic sites on the cone tips.
Journal ArticleDOI
Novel cold cathode materials and applications
Ningsheng Xu,S. Ejaz Huq +1 more
TL;DR: In this article, a review of field emission cold cathode materials has been presented, focusing on several kinds of novel cold cathodes that have been developed in the past decade, including materials for microfabricated field-emitter arrays, diamond and related films, carbon nanotubes, other quasi one-dimensional nanomaterials and printable composite materials.
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Generation of continuous and pulsed diagnostic imaging x-ray radiation using a carbon-nanotube-based field-emission cathode
Guozhen Yue,Q. Qiu,Bo Gao,Yuan Cheng,Jing Zhang,Hideo Shimoda,Sha Chang,Jianping Lu,Otto Zhou +8 more
TL;DR: In this article, the authors demonstrate that medical diagnostic x-ray radiation can be generated using a carbon nanotube (CNT)-based field-emission cathode, which can readily produce both continuous and pulsed x-rays with a programmable wave form and repetition rate.