Direct and indirect influence on microorganisms of non‐thermal atmospheric‐pressure DBD
in air is compared in terms of bacterial inactivation rates. It is demonstrated that direct
influence of the plasma, where charged particles contact bacteria directly, produces
inactivation much faster than the indirect treatment, where plasma afterglow is delivered to
the bacteria with a gas flow through the plasma region. This leads to an important
conclusion that the effect of charged particles on plasma plays the essential role in …

Effectiveness of non-thermal atmospheric pressure Floating Electrode Dielectric Barrier
Discharge plasma in interaction with living organisms is investigated. Two regimes are
analyzed: where this plasma comes in direct contact with the organism and where this
plasma in separated for the treatment target by a grounded mesh. Direct plasma contact is
found to be more efficient at sterilization and the mechanism is hypothesized to be due to
charged species delivered by plasma to the surface of the organism.