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Static electrification of teflon by metals
Umeå University, Faculty of Science and Technology, Department of Physics.
1973 (English)Doctoral thesis, monograph (Other academic)
Abstract [en]

The electrification of a system consisting of a metal and polytetrafluoro-ethylene (Teflon) has been investigated under relative motion. First, the electrification charge received by the insulator was measured when velocity, radius of curvature of the metal electrode and normal force were varied. The measurements were performed both in atmospheric pressure and later under vacuum, since electrical breakdown sometimes limited the charge of the insulator.The results of these investigations indicated that the electrification charge received by the insulator is proportional to the real area of contact. Electrification in the sliding mode might therefore be analysed and interpreted as simply as in lifting experiments.Electrification experiments were then carried out using several metals,and a linear relation was found between the insulator charge density and the metal work function. This result together with the short charging time observed suggest a charging mechanism, in which electrons from the metal fill empty surface states in the insulator up to a level corresponding to the Fermi level of the metal.

Place, publisher, year, edition, pages
Umeå: Umeå universitet , 1973. , 120 p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-70259OAI: oai:DiVA.org:umu-70259DiVA: diva2:620654
Public defence
1973-09-28, Hörsal D, LU III, Umeå universitet, Umeå, 09:00
Projects
digitalisering@umu
Available from: 2013-05-09 Created: 2013-05-09 Last updated: 2013-05-09Bibliographically approved

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Static electrification of teflon by metals(8766 kB)2063 downloads
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf