Open AccessGeneration and optical characterization of aerosol particles with controlled mixed composition
Author(s) -
Vasanthi Sivaprakasam,
J. E. Tucker,
Jay D. Eversole
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.008243
Subject(s) - analyte , aerosol , materials science , particle (ecology) , particle size , core (optical fiber) , bead , coating , characterization (materials science) , fluorescence , range (aeronautics) , optics , mass fraction , analytical chemistry (journal) , composite material , nanotechnology , chemistry , chromatography , physics , oceanography , organic chemistry , geology
A method for controlled generation of composite aerosol particles is achieved by coating a core particle material, such as glass or polymer beads, with a second (analyte) material on the core surface. The mass fraction of the analyte can be varied over a wide range to generate resultant composite aerosol particles, which for the low end of analyte mass fractions has little influence on the particle size, but can be varied up to mass fractions nearly equivalent to the core material, as demonstrated in this paper. Analysis of this method was carried out using fluorescent analyte and core particle materials in separable spectral bands to measure both particle size distributions and fluorescent emission distributions on individual particle basis.