title: Field emission characteristics and structure of carboncontaining cathode materials
metadata.name: dc.contributor.author
metadata.value: Phung, Duc-Manh
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Sheshin, Evgeniy P.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2024-08-19T20:41:32Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2024-08-19T20:41:32Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2024-06
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Phung D. M., Sheshin E. P. Field emission characteristics and structure of carboncontaining cathode materials. Vestnik of Saint Petersburg University. Applied Mathematics. Computer Science. Control Processes, 2024, vol. 20, iss. 2, pp. 193–205. https://doi.org/10.21638/spbu10.2024.205 (In Russian)
metadata.lang: en_GB
metadata.name: dc.identifier.issn
metadata.value: https://doi.org/10.21638/spbu10.2024.205
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/47266
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: Field emission and structural characteristics of carbon nanotube fibers, polyacrylonitrile
  fibers, pyrolytic graphite and micrograined dense graphite were experimentally studied before
  and after their operation as a field cathode using registration of the current-voltage
  characteristics, optical microscopy, scanning electron microscopy and Raman spectroscopy
  in the spectral range from 1000 to 2000 cm−1. The experiments carried out showed large
  and small structural rearrangements of carbon-containing cathodes and their surfaces in
  the process of field emission. In addition to the G, D and D’ lines characteristic of carbon
  materials, a line was detected in the range of 1450–1480 cm−1, which is observed in the
  starting materials of pyrolytic graphite, carbon nanotube fibers and persists after operation,
  and also appears in the micrograined dense graphite sample after operation in as a cathode.
  The relative integral intensity of line D in pyrolytic graphite, micrograined dense graphite,
  and carbon nanotube fibers undergoes the greatest change. In pyrolytic graphite and carbon
  nanotube fiber, its increase is observed, and in micrograined dense graphite its decrease is
  observed after operation as a cathode. This made it possible to use the relative integral
  intensity of the D-line to quantify the change in the surface properties of carbon materials
  as a result of field emission when using these materials as cathodes, in particular. to assess
  changes in crystallite sizes. Thus, the possibility of using Raman spectra to control the
  surface structure of carbon-containing materials has been demonstrated, which significantly
  facilitates the possibility of further analysis of the relationship between the surface structure
  and its emission characteristics. The prospects for improving the field emission characteristics
  of carbon-containing cathodes were discussed.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: ru
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Vestnik of St Petersburg University. Applied Mathematics. Computer Science. Control Processes;Volume 20; Issue 2
metadata.lang: -
metadata.name: dc.subject
metadata.value: field emission
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: field emission cathode
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: field emission current
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: volt-ampere characteristics
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: optical microscopy
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: raster (scanning) electron microscopy
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Raman spectra
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: carboncontaining materials
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: nanostructured materials
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: surface structure
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Field emission characteristics and structure of carboncontaining cathode materials
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: vestnik_spbu10_2024_193.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/47266/1/vestnik_spbu10_2024_193.pdf
resources.format: Adobe PDF
resources.size: 2,11 MB