Bacterial inactivation of wound infection in a human skin model by liquid-phase discharge plasma.

Background: We investigate disinfection of a reconstructed human skin model contaminated with biofilm-formative Staphylococcus aureus employing plasma discharge in liquid.

Principal Findings: We observed statistically significant 3.83-log10 (p<0.

Material removal mechanisms in monopolar electrosurgery.

The underlying mechanisms that cause the observed tissue differences in monopolar electrosurgery under different electrical excitation conditions have not been accurately identified to date. Without an understanding of the mechanisms behind the observed differences in tissue effect, advances in electrosurgical technology are reduced to empirical trial and error. The numerical method we present herein allows single arc events and two ensuing vaporization mechanisms and thermal damage to surrounding tissues to be modeled.

Bacterial inactivation in open air by the afterglow plume emitted from a grounded hollow slot electrode.

Escherichia coli, Bacillus atrophaeus, and Bacillus atrophaeus spores were exposed to a downstream plasma afterglow plume emitted from a slotted plasma device operating in open air at atmospheric pressure. The reactor electrodes were RF powered at 13.56 MHz to excite a mixture of argon and oxygen gases by a capacitive discharge as it flowed past the electrodes into open air.