Submicron particle sizing by aerodynamic dynamic focusing and electrical charge measurement--颗粒学报PARTICUOLOGY

Tan, Z., Givehchi, R., & Saprykina, A. (2015). Submicron particle sizing by aerodynamic dynamic focusing and electrical charge measurement. Particuology, 18, 105–111. https://doi.org/10.1016/j.partic.2014.01.002

Submicron particle sizing by aerodynamic dynamic focusing and electrical charge measurement

Zhongchao Tan^a *, Raheleh Givehchi ^a, Alena Saprykina ^b

a Department of Mechanical & Mechatronics Engineering, University of Waterloo, Ontario, Canada
b Department of Mechanical and Manufacturing Engineering, University of Calgary, Alberta, Canada

10.1016/j.partic.2014.01.002

Volume 18, February 2015, Pages 105-111

Received 5 September 2013, Revised 14 January 2014, Accepted 16 January 2014, Available online 14 March 2014.

E-mail: tanz@uwaterloo.ca

Highlights

• A new method was introduced to measure size distribution of airborne submicron particles.

• The method combines the particle charging with aerodynamic particle focusing.

• Effect of generated and loss of nanoparticles was considered in measurement with new prototype.

• The prototype could detect particle sizes down to 40 nm in diameter.

Abstract

Principles of a novel submicron particle sizing technology are first introduced followed by experimental validation. The sizing was accomplished by coupling aerodynamic particle focusing and maximum ion measurement. Experimental results showed that the prototype could detect particle sizes down to 40 nm in diameter. Comparison between the prototype and a scanning mobility particle sizer using identical polydisperse particles showed that the measurements agreed well for the tested particles.

Graphical abstract

Keywords

Submicron particle; Particle sizing; Aerodynamic focusing; Particle charging

文章导读