Micromachined cascade virtual impactor with a flow rate distributor for wide range airborne particle classification

Yong Ho Kim, Jwa Young Maeng, Dongho Park, Il Hyun Jung, Jungho Hwang, Yong Jun Kim

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

This letter reports a module for airborne particle classification, which consists of a micromachined three-stage virtual impactor for classifying airborne particles according to their size and a flow rate distributor for supplying the required flow rate to the virtual impactor. Dioctyl sebacate particles, 100-600 nm in diameter, and carbon particles, 0.6-10 μm in diameter, were used for particle classification. The collection efficiency and cutoff diameter were examined. The measured cutoff diameters of the first, second, and third stages were 135 nm, 1.9 μm, and 4.8 μm, respectively.

Original languageEnglish
Article number043512
JournalApplied Physics Letters
Volume91
Issue number4
DOIs
Publication statusPublished - 2007 Aug 3

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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