Abstract

A fast in situ sizing technique for single levitated aerosol particles is presented. It makes use of the analysis of fast-Fourier-transformed vertically polarized Mie scattering patterns from single liquid aerosols levitated in a Paul-trap-type electrodynamic balance. The technique is shown to give reliable results for a test sphere of known physical properties. A first application to aqueous sodium chloride aerosol particles that changed size on humidity variation is presented, yielding good agreement with the full Mie theory.

© 1999 Optical Society of America

Optical measurements from single levitated particles using a linear electrodynamic quadrupole trap

Matthew B. Hart, Vasanthi Sivaprakasam, Jay D. Eversole, Lee J. Johnson, and Jozsef Czege
Appl. Opt. 54(31) F174-F181 (2015)

Infrared and visible Fourier-transform spectra of sulfuric-acid–water aerosols at 230 and 294 K

Adam E. Heathfield, David A. Newnham, John Ballard, Roy G. Grainger, and Alyn Lambert
Appl. Opt. 38(30) 6408-6420 (1999)

White light Mie resonance spectroscopy used to measure very low vapor pressures of substances in aqueous solution aerosol particles

Alessandro A. Zardini, Ulrich K. Krieger, and Claudia Marcolli
Opt. Express 14(15) 6951-6962 (2006)

Measured Light-Scattering Properties of Individual Aerosol Particles Compared to Mie Scattering Theory

R. G. Pinnick, J. M. Rosen, and D. J. Hofmann
Appl. Opt. 12(1) 37-41 (1973)

Observation of suppression of morphology-dependent resonances in singly levitated micrometer-sized droplets

M. Essien, J. B. Gillespie, and R. L. Armstrong
Appl. Opt. 31(12) 2148-2153 (1992)