The effect of circuit resistance on the particle output of a spark discharge nanoparticle generator

A. Kohut, L. P. Villy, T. Ajtai, Z. Geretovszky, G. Galbács

Research output: Contribution to journalArticle

Abstract

The present study investigates how systematic variation of the resistance of the discharge loop influences the nanoparticle output and the electrode erosion of spark discharge generators (SDGs). The size distribution of the nanoparticles, as well as the mass loss of gold electrodes was recorded while varying the total resistance of the discharge loop. It was demonstrated that the characteristics of the aerosol nanoparticles produced by SDGs as well as the erosion rate of electrodes strongly depend on the total resistance even at small values. It was found that by increasing Rtotal from 0.7 Ω to 6 Ω, the modal diameter of the gold particles decreased from 39 nm to 16.5 nm with the concomitant decrease of the erosion rate. Our data allowed concluding that a fair part of the few ohms of total resistance typical to SDGs can easily originate from the electric circuit which affects the particle output. This also means that in addition to the usual control parameters, the total resistance should also be monitored in an SDG, conveniently via monitoring the current, for the purpose of maintaining stable and reproducible NP production. Moreover, circuit resistance can even be considered to be a practical control parameter, if certain size particles are to be produced by an SDG.

Original languageEnglish
Pages (from-to)59-63
Number of pages5
JournalJournal of Aerosol Science
Volume118
DOIs
Publication statusPublished - Apr 1 2018

Fingerprint

Electric sparks
Nanoparticles
Networks (circuits)
Erosion
Gold
Electrodes
electrode
erosion rate
gold
Aerosols
Particle size
nanoparticle
effect
particle
Monitoring
particle size
aerosol
erosion
monitoring

Keywords

  • Discharge circuit
  • Electrode erosion
  • Gold nanoparticles
  • Spark discharge generator (SDG)

ASJC Scopus subject areas

  • Environmental Chemistry
  • Materials Science(all)
  • Pollution

Cite this

The effect of circuit resistance on the particle output of a spark discharge nanoparticle generator. / Kohut, A.; Villy, L. P.; Ajtai, T.; Geretovszky, Z.; Galbács, G.

In: Journal of Aerosol Science, Vol. 118, 01.04.2018, p. 59-63.

Research output: Contribution to journalArticle

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