Cal Poly Pomona

Physics Seminar

Friday, November 14, 2008

Improving the World, one Microplasma at a Time

Jose Lopez

Department of Applied Science and Technology, Physics Division
Saint Peter’s College, NJ

Non-equilibrium plasmas at atmospheric and higher pressures have found numerous technological applications for such devices as lamps and plasma display panels. However, industrial ozone generation is the classical application of these non-equilibrium plasmas. Ozone (O3) is an extremely effective oxidant that is capable of oxidizing many organic and inorganic compounds. The most important and wide spread application of ozone has been for the disinfection and purification of drinking water in numerous cities around the world. The dielectric barrier discharge (DBD), originally proposed by Werner von Siemens (1857) for 'ozonizing air' with a non-equilibrium plasma, remains up to this day the preferred industrial ozone generation method. In recent years, industrial ozone generation has benefited substantially from numerous studies into the discharge properties and the microscopic mechanisms of the ozone formation processes. In this talk, I will discuss some results of recent studies carried out in an effort to understand and improve the DBD's filamentary microdischarge or microplasma properties in air or in oxygen with the goal of minimizing recombination of oxygen atoms while optimizing ozone formation.

Refreshments at 4:00 PM. Seminar begins at 4:10 PM.
Building 8, Room 241
For further information, please call (909) 869-4014

Last modified on October 6, 2008
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