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American Institute of Physics, Applied Physics Letters, 22(106), p. 224101, 2015

DOI: 10.1063/1.4922034

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Controlled microdroplet transport in an atmospheric pressure microplasma

Journal article published in 2015 by Paul D. Maguire ORCID, Cmo M. O. Mahony ORCID, Colin P. Kelsey, Aj J. Bingham ORCID, Ep P. Montgomery, Ed D. Bennet, He E. Potts, Dce C. E. Rutherford ORCID, D. A. McDowell, Da A. Diver, D. Mariotti
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This paper is available in a repository.

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Abstract

We report the controlled injection of near-isolated micron-sized liquid droplets into a low temperature He-Ne steady-state rf plasma at atmospheric pressure. The H2O droplet stream is constrained within a 2 mm diameter quartz tube. Imaging at the tube exit indicates a log-normal droplet size distribution with an initial count mean diameter of 15lm falling to 13lm with plasma exposure. The radial velocity profile is approximately parabolic indicating near laminar flow conditions with the majority of droplets travelling at>75% of the local gas speed and having a plasma transit time of