Low-temperature argon plasma jet with cascading electrode technique for biological applications

Area of Science:

• Plasma Physics
• Biomedical Engineering
• Materials Science

Background:

• Low-temperature plasmas are crucial for various applications, including surface modification and biomedical treatments.
• Conventional plasma jet designs often face challenges in controlling plasma stability and temperature.
• The development of advanced plasma generation techniques is essential for expanding their utility.

Purpose of the Study:

• To design and characterize a novel argon plasma jet with cascading electrode technique (APJCE).
• To evaluate the performance and thermal characteristics of the APJCE system.
• To confirm the cold plasma regime and assess the plasma jet's suitability for biological applications.

Main Methods:

• The APJCE system was designed using a tip-ring structure with a cascading ring.
• Plasma jet characteristics were measured using a local surface temperature detection system and electrical parameter analysis.
• Electric field distribution was simulated.
• Atomic emission spectroscopy was employed to analyze the plasma jet spectra.

Main Results:

• The APJCE system successfully generated a stable, low-temperature argon plasma jet.
• Electrical and thermal measurements confirmed the plasma jet operates within the cold plasma regime.
• Simulations of electric field distribution aligned with experimental findings.
• The plasma temperature remained at 37 °C within 4 cm of the nozzle output.

Conclusions:

• The cascading electrode technique effectively guides the plasma column, ensuring a stable and low-temperature output.
• The APJCE system is a promising tool for applications requiring precise control over plasma parameters, particularly in biological surface treatments.
• The study validates the APJCE design for generating cold atmospheric argon plasma.