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Size Classification of Airborne Nanoparticles Using Electrically Tunable Virtual Impactor  

Kwon, Soon-Myung (School of Mechanical Engineering, Yonsei Univ.)
Kim, Yong-Ho (School of Mechanical Engineering, Yonsei Univ.)
Park, Dong-Ho (School of Mechanical Engineering, Yonsei Univ.)
Hwang, Jung-Ho (School of Mechanical Engineering, Yonsei Univ.)
Kim, Yong-Jun (School of Mechanical Engineering, Yonsei Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.26, no.2, 2009 , pp. 118-125 More about this Journal
Abstract
This paper reports the size classification of nanoparticles as well as electrical tuning techniques for the cut-off diameter and collection efficiency. Classifying particles < 100 nm in diameter is quite a technical challenge using a virtual impactor with the cut-off diameter being determined geometrically. However, the proposed virtual impactor can classify particles <100 nm and tune the cut-off diameter by electrically accelerating the particles. The cut-off diameter of the proposed device was tuned from 15 to 50nm.
Keywords
Size Classification; Nanometer-sized Airborne Particle; Cut-off Diameter; Collection Efficiency; Virtual Impactor;
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