A Miniature system for separating aerosol particles and measuring mass concentrations
Journal
Sensors
Journal Volume
10
Journal Issue
4
Pages
3641-3654
Date Issued
2010
Author(s)
Liang, Dao
Shih, Wen-Pin
Chen, Chuin-Shan
Dai, Chi-AnLiang, D.
Shih, W.-P.
Chen, C.-S.
Dai, C.-A.
Abstract
We designed and fabricated a new sensing system which consists of two virtual impactors and two quartz-crystal microbalance (QCM) sensors for measuring particle mass concentration and size distribution. The virtual impactors utilized different inertial forces of particles in air flow to classify different particle sizes. They were designed to classify particle diameter, d, into three different ranges: d < 2.28 μm, 2.28 μm ≤ d ≤ 3.20 μm, d > 3.20 μm. The QCM sensors were coated with a hydrogel, which was found to be a reliable adhesive for capturing aerosol particles. The QCM sensor coated with hydrogel was used to measure the mass loading of particles by utilizing its characteristic of resonant frequency shift. An integrated system has been demonstrated. © 2010 by the authors.
Subjects
Aerosol particle; Microbalance sensor; Virtual impactor
Other Subjects
Aerosol particles; Different particle sizes; Integrated systems; Mass concentration; Microbalance sensors; Particle diameters; Resonant frequency shift; Virtual impactors; Aerosols; Hydrogels; Natural frequencies; Quartz crystal microbalances; Particle size
Type
journal article