AVS 58th Annual International Symposium and Exhibition
    Advanced Surface Engineering Division Wednesday Sessions
       Session SE+PS-WeA

Paper SE+PS-WeA11
Investigation of Discharge Modes of Cylindrical Dielectric Barrier Discharge Configuration for Surface Treatment at Atmospheric-Pressure

Wednesday, November 2, 2011, 5:20 pm, Room 104

Session: Atmospheric Pressure Plasmas
Presenter: Tae Cho, University of Illinois at Urbana Champaign
Authors: T.S. Cho, University of Illinois at Urbana Champaign
Y.L. Wu, University of Illinois at Urbana Champaign
J.M. Hong, University of Illinois at Urbana Champaign
Z. Ouyang, University of Illinois at Urbana Champaign
D.N. Ruzic, University of Illinois at Urbana Champaign
Correspondent: Click to Email
To date, various structural concepts of atmospheric-pressure dielectric barrier discharge had been studied and some of the concepts have already been commercialized for surface treatment processes because of its simplicity and scalability. In this study, cylindrical dielectric barrier discharge configurations for treating the powder particles or controlling the air pollutants at atmospheric-pressure have been investigated. The electrical characteristics of the cylindrical dielectric barrier discharge structure as a capacitive load have been experimentally measured for the mixture of helium and nitrogen and its flow rate with voltage-charge lissajous analysis method. Also, it has been compared with remote plasmas from the commercial planar dielectric barrier discharge system of which capacitance has been 280pF for driving conditions of 5kV and 30 kHz. Emissions from the atmospheric-pressure dielectric barrier discharge plasma have been analyzed for varied gas conditions with the optical emission spectroscopy. For comparison purposes, the glass substrates treated with commercial planar and cylindrical dielectric barrier discharge plasmas have been analyzed. In addition, the sugar-alcohol particles have been treated with atmospheric-pressure plasma from the cylindrical dielectric barrier discharge system, and compared with the untreated particles.