Nitrogen and air Paschen curves for dielectric barrier discharges in μm-sized voids

Scott M. Harris, Axel Mellinger

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

The piezoelectric activity of ferro- or piezoelectrets (i e., charged polymer foams) is due to space charge deposited on dielectric surfaces of interior micrometer-sized voids. Typically, the space charge is created by applying large electric fields to the voids which induces dielectric barrier discharges (DBDs) resulting in charge separation within the gas. This charging process, which is a strong function of the gas pressure and void height, can be studied by monitoring light emission whose occurrence corresponds to the onset of DBDs. To investigate the breakdown behavior, single cell voids with defined heights were constructed by placing polypropylene (PP) spacers with varying thickness between 25 μm PP dielectric barriers. These were placed between glass slides with semi-transparent indium tin oxide electrodes. A high voltage charging profile was then applied while emission of light was monitored either with an electron-multiplying CCD camera (imaging mode) or a photomultiplier (non-imaging mode). Two separate methods of monitoring light emissions resulted in similar breakdown fields Ec for nitrogen and air in small voids. The breakdown fields are in good agreement with the standard Paschen curves, with small deviations for void heights less than 25 μm.

Original languageEnglish
Title of host publication2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages598-600
Number of pages3
ISBN (Electronic)9781467374972
DOIs
StatePublished - Dec 9 2015
EventIEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2015 - Ann Arbor, United States
Duration: Oct 18 2015Oct 21 2015

Publication series

NameAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Volume2015-December
ISSN (Print)0084-9162

Conference

ConferenceIEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2015
Country/TerritoryUnited States
CityAnn Arbor
Period10/18/1510/21/15

Keywords

  • Dielectrics
  • Discharges (electric)
  • Electrodes
  • Indium tin oxide
  • Nitrogen
  • Photomultipliers

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