Generation of fibrous aerosols from thin films.
Gilbertson KE; Finlay WH; Lange CF; Brett MJ; Vick D; Cheng YS
J Aerosol Sci 2005 Jul; 36(7):933-937
A method of producing relatively monodisperse, small-diameter (sub-500 nm diameter) aerosol fibers is described. This method involves the separation of porous thin films from their substrate. It was found that fibers with diameters of less than several hundred nm and lengths of several micrometers can be formed that do not adhere to one-another. Two um thick columnar thin films were fabricated and processed, yielding aerosol fibers with lengths up to 2 um and diameters up to 170 nm. Diameter and length distributions of a collected aerosol showed that a broad range of fiber lengths and diameters are formed by this method. Further modification of the method, however, is expected to greatly narrow the range of ef fective diameters and lengths obtained.
Aerosols; Aerosol-particles; Fibrous-dusts; Inhalants; Airborne-fibers; Air-sampling; Exposure-levels; Risk-factors; Asbestos-fibers; Asbestos-dust; Particulates; Analytical-processes; Air-flow; Respiratory-irritants;
Author Keywords: Fibers; Aerosol formation; Thin films
W.H. Finlay, Department of Mechanical Engineering, Aerosol Research Laboratory of Alberta, University of Alberta, Edmonton, Canada T6G 2G8
Journal of Aerosol Science
Lovelace Biomedical & Environmental Research, Albuquerque, New Mexico