A Miniature Aerosol Sensor for Detecting Polydisperse Airborne Ultrafine Particles
AbstractCounting and sizing of polydisperse airborne nanoparticles have attracted most attentions owing to increasing widespread presence of airborne engineered nanoparticles or ultrafine particles. Here we report a miniature aerosol sensor to detect particle size distribution of polydisperse ultrafine particles based on ion diffusion charging and electrical detection. The aerosol sensor comprises a couple of planar electrodes printed on two circuit boards assembled in parallel, where charging, precipitation and measurement sections are integrated into one chip, which can detect aerosol particle size in of 30–500 nm, number concentration in range of 5 × 102 – 5 × 107 /cm3. The average relative errors of the measured aerosol number concentration and the particle size are estimated to be 12.2% and 13.5% respectively. A novel measurement scheme is proposed to actualize a real-time detection of polydisperse particles by successively modulating the measurement voltage and deducing the particle size distribution through a smart data fusion algorithm. The effectiveness of the aerosol sensor is experimentally demonstrated via measurements of polystyrene latex (PSL) aerosol and nucleic acid aerosol, as well as sodium chloride aerosol particles. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Zhang, C.; Wang, D.; Zhu, R.; Yang, W.; Jiang, P. A Miniature Aerosol Sensor for Detecting Polydisperse Airborne Ultrafine Particles. Sensors 2017, 17, 929.
Zhang C, Wang D, Zhu R, Yang W, Jiang P. A Miniature Aerosol Sensor for Detecting Polydisperse Airborne Ultrafine Particles. Sensors. 2017; 17(4):929.Chicago/Turabian Style
Zhang, Chao; Wang, Dingqu; Zhu, Rong; Yang, Wenming; Jiang, Peng. 2017. "A Miniature Aerosol Sensor for Detecting Polydisperse Airborne Ultrafine Particles." Sensors 17, no. 4: 929.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.