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Influence of Polystyrene Layer on the Field Electron Emission Performance of Nano-Apex Carbon Fibre Emitters

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU145833" target="_blank" >RIV/00216305:26620/21:PU145833 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.tandfonline.com/doi/abs/10.1080/2374068X.2021.1938886?journalCode=tmpt20" target="_blank" >https://www.tandfonline.com/doi/abs/10.1080/2374068X.2021.1938886?journalCode=tmpt20</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1080/2374068X.2021.1938886" target="_blank" >10.1080/2374068X.2021.1938886</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Influence of Polystyrene Layer on the Field Electron Emission Performance of Nano-Apex Carbon Fibre Emitters

  • Original language description

    A comprehensive investigation has been carried out to determine the source of an inherent temporal instability in the spatial distribution and the emission current obtained from field electron-emitting carbon fiber tips of type Polyacrylonitrile VPR – 19, thermally treated at 2800 °C. These instability effects have been successfully overcome by coating the carbon fiber tip with a sub-micron layer of polystyrene . The current-voltage characteristics, Fowler-Nordheim plots, Murphy-Good plots and the scanning electron micrographs in addition to the field electron emission patterns were used in this investigation to study the emission characteristics of carbon fiber tips before and after samples are being coated with polystyrene layer. Comparison between the emission process from the clean and composite tips are reported and the current-voltage characteristics were obtained at a threshold field that is a few times lower than that of the clean tip. At low emission current levels linear Fowler-Nordheim and Murphy-Good plots were obtained with a slope value lower than that of the clean tip. The spatial distribution consisted of a very bright spot without any internal structure. These results suggest that a polystyrene coated fiber tip offers better performance than the clean carbon fiber tip as a new field electron emission source.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20201 - Electrical and electronic engineering

Result continuities

  • Project

    <a href="/en/project/LM2018110" target="_blank" >LM2018110: CzechNanoLab research infrastructure</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2021

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Advances in Materials and Processing Technologies

  • ISSN

    2374-0698

  • e-ISSN

  • Volume of the periodical

    8

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    19

  • Pages from-to

    „2652“-„2671 “

  • UT code for WoS article

    000663227800001

  • EID of the result in the Scopus database

    2-s2.0-85108182805