CaltechAUTHORS
Published May 2001 | Version public
Journal Article Metadata-only

Space-charge effects in nanoparticle processing using the differential mobility analyzer

Creators

  • 1. ROR icon California Institute of Technology

Abstract

We report the observation of mobility classification breakdown due to strong space-charge effects during nanoparticle processing in a radial differential mobility analyzer (DMA). A simple dimensionless group, the space-charge number, is introduced to help identify the conditions for which this phenomenon becomes important. Our analysis suggests a few DMA design features and operation conditions that should enable the accurate classification of ultrafine aerosols with high concentrations of charged particles.

Additional Information

This work was supported by the US National Science Foundation under Grant NSF-DMR-98-71850. R.P.C. acknowledges support from CNPq, Brası́lia, Brazil. The authors would like to thank Dr. Gang He and Prof. Kerry J. Vahala for valuable discussions.

Additional details

Identifiers

Eprint ID
120598
Resolver ID
CaltechAUTHORS:20230329-864844000.2

Related works

Describes
10.1016/S0021-8502(00)00104-X (DOI)

Funding

NSF
DMR-98-71850
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Dates

Created
2023-03-30
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Updated
2023-03-30
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