Abstract
There has always been a quest for nanotechnology to develop inexpensive coating methods with the capability of depositing biocompatible nanomaterials on biomedical and surgical tools. In this mini-report, a plasma-based innovative idea of coating a solid surface with antibacterial/antimicrobial nanosilver is floated and experimentally realized. The desired antibacterial nanosilver was obtained from laser ablation and directly entrained in an outflowing plasma jet, excited in the flow of argon at 10 l min-1 using 20 kV/20 kHz. Under these conditions, the jet can protrude 15 mm deeply into ambient air. The quality of the surface coating can be described by sparsely distributed particles or densely agglomerated clusters, controlled by the plasma length and the surface separation. Apart from the coating, plasma interaction leads to the sterilization of the exposed surface. The idea is essentially important to extend and upscale for coating biomedical and surgical devices in a flexible open processing environment.
Highlights
Biomedical/surgical tools and transplants are extensively used in health centers world-wide
To understand the operation mode of the plasma device used in the experiment, the voltage–current signals were measured through a digital oscilloscope
This behavior is important for biomedical application; the plasma can be applied in the filamentary mode not shown here
Summary
Biomedical/surgical tools and transplants are extensively used in health centers world-wide. To avoid thermal arcs formation caused by the high excitation voltage, the discharge current (ID) flows in the gas is controlled by covering one or both the electrodes with a dielectric material, such as quartz or glass This provides help in sustaining selfpulsing operation of the plasma device. DBDs can be produced in different configurations; the double electrode configuration with the tabular geometry provides a more convenient and effective way to launch a plasma jet in the open air, essentially important for material processing and biomedical applications.. The coating of biomedical tools with the desired material could be an interesting and novel application of DBD plasma jets with supplementary benefit of plasma sterilization This would greatly facilitate the biomedical technology by treating large surgical tools and objects in the increased working space outside the main discharge regime
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