Stable Field Emitters for a Miniature X-ray Tube Using Carbon Nanotube Drop Drying on a Flat Metal Tip

Stable carbon nanotube (CNT) field emitters for a vacuum-sealed miniature X-ray tube have been fabricated. The field emitters with a uniform CNT coating are prepared by a simple drop drying of a CNT mixture solution that is composed of chemically modified multi-walled CNTs, silver nanoparticles, and...

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Detalles Bibliográficos
Autores principales: Heo, Sung Hwan, Ihsan, Aamir, Yoo, Seung Hwa, Ali, Ghafar, Cho, Sung Oh
Formato: Texto
Lenguaje:English
Publicado: Springer 2010
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2893921/
https://www.ncbi.nlm.nih.gov/pubmed/20672136
http://dx.doi.org/10.1007/s11671-010-9537-x
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author Heo, Sung Hwan
Ihsan, Aamir
Yoo, Seung Hwa
Ali, Ghafar
Cho, Sung Oh
author_facet Heo, Sung Hwan
Ihsan, Aamir
Yoo, Seung Hwa
Ali, Ghafar
Cho, Sung Oh
author_sort Heo, Sung Hwan
collection PubMed
description Stable carbon nanotube (CNT) field emitters for a vacuum-sealed miniature X-ray tube have been fabricated. The field emitters with a uniform CNT coating are prepared by a simple drop drying of a CNT mixture solution that is composed of chemically modified multi-walled CNTs, silver nanoparticles, and isopropyl alcohol on flat tungsten tips. A highly thermal- and electrical-conductive silver layer strongly attaches CNTs to the tungsten tips. Consequently, the field emitters exhibit good electron emission stability: continuous electron emission of around 100 μA at 2.3 V/μm has stably lasted over 40 h even at non-high vacuum ambient (~10(−3) Pa).
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spelling pubmed-28939212010-07-28 Stable Field Emitters for a Miniature X-ray Tube Using Carbon Nanotube Drop Drying on a Flat Metal Tip Heo, Sung Hwan Ihsan, Aamir Yoo, Seung Hwa Ali, Ghafar Cho, Sung Oh Nanoscale Res Lett Nano Express Stable carbon nanotube (CNT) field emitters for a vacuum-sealed miniature X-ray tube have been fabricated. The field emitters with a uniform CNT coating are prepared by a simple drop drying of a CNT mixture solution that is composed of chemically modified multi-walled CNTs, silver nanoparticles, and isopropyl alcohol on flat tungsten tips. A highly thermal- and electrical-conductive silver layer strongly attaches CNTs to the tungsten tips. Consequently, the field emitters exhibit good electron emission stability: continuous electron emission of around 100 μA at 2.3 V/μm has stably lasted over 40 h even at non-high vacuum ambient (~10(−3) Pa). Springer 2010-01-23 /pmc/articles/PMC2893921/ /pubmed/20672136 http://dx.doi.org/10.1007/s11671-010-9537-x Text en Copyright © 2010 The Author(s) https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
spellingShingle Nano Express
Heo, Sung Hwan
Ihsan, Aamir
Yoo, Seung Hwa
Ali, Ghafar
Cho, Sung Oh
Stable Field Emitters for a Miniature X-ray Tube Using Carbon Nanotube Drop Drying on a Flat Metal Tip
title Stable Field Emitters for a Miniature X-ray Tube Using Carbon Nanotube Drop Drying on a Flat Metal Tip
title_full Stable Field Emitters for a Miniature X-ray Tube Using Carbon Nanotube Drop Drying on a Flat Metal Tip
title_fullStr Stable Field Emitters for a Miniature X-ray Tube Using Carbon Nanotube Drop Drying on a Flat Metal Tip
title_full_unstemmed Stable Field Emitters for a Miniature X-ray Tube Using Carbon Nanotube Drop Drying on a Flat Metal Tip
title_short Stable Field Emitters for a Miniature X-ray Tube Using Carbon Nanotube Drop Drying on a Flat Metal Tip
title_sort stable field emitters for a miniature x-ray tube using carbon nanotube drop drying on a flat metal tip
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2893921/
https://www.ncbi.nlm.nih.gov/pubmed/20672136
http://dx.doi.org/10.1007/s11671-010-9537-x
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