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Download fileGeneration and loss of reactive oxygen species in low-temperature atmospheric-pressure RF He+O2+H2O plasma
conference contribution
posted on 2014-12-01, 15:44 authored by Kirsty McKay, Ding-Xin Liu, Ming-Zhe Rong, Felipe IzaFelipe Iza, Michael G. KongThis study focuses on the generation and loss of reactive oxygen species (ROS) in lowtemperature
atmospheric‐pressure rf (13.56MHz) He+O2+H2O plasmas, which are of
interest for many biomedical applications. Pure He+O2 plasmas are a good source of ozone,
singlet oxygen and atomic oxygen, with densities of these species increasing as oxygen
content increases1. He+H2O plasmas offer an interesting alternative to He+O2 plasmas as a
source of reactive oxygen species (ROS), and they produce significant amounts of hydrogen
peroxide, hydroxyl radicals and hydroperoxyl radicals, which increase with increasing water
content2. Admixtures of O2 and H2O lead to richer cocktails of ROS that combine all these
species.
Funding
This work was supported by the Engineering Physical Science Research Council (EPSRC) of UK
History
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