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In-flight coating of nanoparticles inatmospheric-pressure DBD torch plasmas

Published online by Cambridge University Press:  28 April 2009

C. Nessim*
Affiliation:
CREPE, Département de Génie Chimique, Université de Sherbrooke, Sherbrooke, J1K 2R1, Canada Tekna Plasma Systems Inc., Sherbrooke, Québec, J1L 2T9, Canada
M. Boulos
Affiliation:
CREPE, Département de Génie Chimique, Université de Sherbrooke, Sherbrooke, J1K 2R1, Canada Tekna Plasma Systems Inc., Sherbrooke, Québec, J1L 2T9, Canada
U. Kogelschatz
Affiliation:
Retired from ABB Corporate Research, 5405 Baden, Switzerland
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Abstract

Two DBD torch designs were used to investigate coatingand surface functionalization of small particles. One had an annulardischarge gap between coaxial quartz tubes, the second, suited forhigh throughput, used external shell electrodes on opposite sides ofa quartz tube. Several discharge sections could be used in flowdirection, with intermediate ports for particle and/or monomerinjection. Both torches were operated by a sinusoidal high voltage(13 kV, 20 kHz). The coaxial torch always showed a filamentarydischarge, while the shell-electrode design in He also produceddiffuse glow discharges. A variety of different precursors anddielectric as well as metallic particles of nanometer or micrometerdiameter were used.

Keywords

Type
Research Article
Copyright
© EDP Sciences, 2009

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References

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