Přístupnostní navigace
E-application
Search Search Close
Publication detail
ALABTAH, M. T.M. SHATNAWI, M. ALLAHAM, M. BURDA, D. MOUSA, M.
Original Title
Field electron emission from tungsten micro-tips coated with various thicknesses of polystyrene nanolayers: Characteristics & analysis
Type
journal article in Web of Science
Language
English
Original Abstract
This paper studies and analyses the characteristics of cold field electron emission from uncoated polycrystalline tungsten tips before and after being coated with an insulating polystyrene layer of different thicknesses. The process of testing the samples has been carried out under high vacuum conditions (10−8 mbar). Uncoated tungsten tips were prepared using the electrochemical etching process. The current-voltage characteristics of the samples before and after being coated were presented and analysed using Murphy-Good plots. Scanning electron micrographs for the samples under investigation have been included. Additionally, the electron emission patterns, before and after the coating process have been included. This is to compare the obtained results and study the effect of the coating layer on the performance of the electron source. The results show significant improvements on the performance of the coated tungsten emitters in comparison with the uncoated emitters.
Keywords
Composite electron source; Field electron emission; Murphy-good analysis; Murphy-good plots; Polystyrene risen
Authors
ALABTAH, M.; T.M. SHATNAWI, M.; ALLAHAM, M.; BURDA, D.; MOUSA, M.
Released
1. 2. 2023
Publisher
Elsevier
ISBN
0304-3991
Periodical
Ultramicroscopy
Year of study
244
Number
February 2023
State
Kingdom of the Netherlands
Pages from
1
Pages to
8
Pages count
URL
https://www.sciencedirect.com/science/article/pii/S0304399122001620?via%3Dihub
BibTex
@article{BUT180165, author="Motasem {Alabtah} and Moneeb {T.M. Shatnawi} and Mohammad Mahmoud {Allaham} and Daniel {Burda} and Marwan {Mousa}", title="Field electron emission from tungsten micro-tips coated with various thicknesses of polystyrene nanolayers: Characteristics & analysis", journal="Ultramicroscopy", year="2023", volume="244", number="February 2023", pages="1--8", doi="10.1016/j.ultramic.2022.113643", issn="0304-3991", url="https://www.sciencedirect.com/science/article/pii/S0304399122001620?via%3Dihub" }