Characteristics of airborne gold aggregates generated by spark discharge and high temperature evaporation furnace: Mass-mobility relationship and surface area

Research output: Contribution to journalArticle


The properties of gas-borne aggregates are important in nano-technology and for potential health effects. Gold aggregates from three generators (one commercial and one custom built spark discharge generator and one high-temperature furnace) have been characterized. The aggregate surface areas were determined using five approaches - based on aggregation theory and/or measured aggregate properties. The characterization included mass-mobility relationships, effective densities (assessed by an Aerosol Particles Mass analyzer), primary particle analysis (based on Transmission Electron Microscopy), as well as total mass and number concentration outputs. The relationships between mass and mobility are well described by power-law functions with exponents of 2.18-2.35. For all generators, the primary particles of the aggregates were fused together by a bridge with a diameter typically similar to 60-70% of the primary particle diameter (5-10 nm). The total mass outputs were 6.1-48.1 mg/m3 and the predicted surface area outputs in the range 0.9 x 10(-3)-17 x 10(-3) cm(2)/cm(3). The aggregate effective densities differed considerably between generators. The difference could partly be explained by the differences in primary particle diameter, but not fully. This in turn may be explained either by a varying primary particle size with aggregate size, or by that there are slight differences in the morphology of the aggregates from the generators. (C) 2015 The Authors. Published by Elsevier Ltd.


Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Other Physics Topics


  • Aerosol particle mass analyzer, Surface area, Electrical mobility, Mass, mobility exponent, High temperature evaporation, condensation, Spark, discharge generator
Original languageEnglish
Pages (from-to)38-52
JournalJournal of Aerosol Science
Publication statusPublished - 2015
Publication categoryResearch

Total downloads

No data available

Related research output

Ludvigsson, L., 2017 Aug 29, 1:a ed. Lund: Solid State Physics. 189 p.

Research output: ThesisDoctoral Thesis (compilation)

View all (1)