Abstract
Point-to-plane corona discharge is widely used for modifying polymer surfaces for biomedical applications and for sterilization and decontamination. This paper focuses on an experimental investigation of the influence of the single-point and multi-point corona discharge electric field on gel surface. Three types of gelatinous agar were used as the gel medium: blood agar, nutrient agar and Endo agar. The gel surface modification was studied for various time periods and discharge currents.
Highlights
Non-equilibrium atmospheric pressure discharges have recently been used in emerging novel applications such as the surface modification of polymers, the absorption or reflection of electromagnetic waves, biomedical treatments and plasma-aided combustion [1]
A matrix multi-point-to-plane corona discharge was used in this case
The corona current decreased from initial value (50 mA) according to the gel electrode deformation
Summary
Non-equilibrium atmospheric pressure discharges have recently been used in emerging novel applications such as the surface modification of polymers, the absorption or reflection of electromagnetic waves, biomedical treatments and plasma-aided combustion [1]. Afterwards the ions drift to the corresponding electrode according to particle polarity Their movement is broken by collisions with neutral atoms and molecules. Ions drifting to an electrode with a low radius of curvature (further referred to as a plate electrode) can make the neutral gas move. This important phenomenon is called electric wind [5]. The discharge current and voltage change during the experiments in dependence on the surface deformation and the gel medium
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