Priyadarshini Rajasekaran et al 2009 J. Phys. D: Appl. Phys. 42 225201 doi:10.1088/0022-3727/42/22/225201
Priyadarshini Rajasekaran1, Philipp Mertmann1, Nikita Bibinov1, Dirk Wandke2, Wolfgang Viöl3,4 and Peter Awakowicz1
Show affiliationsOur dielectric barrier discharge (DBD) plasma source for bio-medical application comprises a copper electrode covered with ceramic. Objects of high capacitance such as the human body can be used as the opposite electrode. In this study, the DBD source is operated in single-filamentary mode using an aluminium spike as the opposite electrode, to imitate the conditions when the discharge is ignited on a raised point, such as hair, during therapeutic use on the human body. The single-filamentary discharge thus obtained is characterized using optical emission spectroscopy, numerical simulation, voltage–current measurements and microphotography. For characterization of the discharge, averaged plasma parameters such as electron distribution function and electron density are determined. Fluxes of nitric oxide (NO), ozone (O3) and photons reaching the treated surface are simulated. The calculated fluxes are finally compared with corresponding fluxes used in different bio-medical applications.
87.53.-j Effects of ionizing radiation on biological systems
52.25.Os Emission, absorption, and scattering of electromagnetic radiation
Issue 22 (21 November 2009)
Received 7 July 2009, in final form 21 September 2009
Published 26 October 2009
Priyadarshini Rajasekaran et al 2009 J. Phys. D: Appl. Phys. 42 225201
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