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February 11, 2026Physics of PlasmasOpen Access

Investigation into the discharge characteristics and antimicrobial effects of different electrode configurations based on the needle–ring–ring structure

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Authors

RGRenpu GeXi'an Jiaotong UniversityTNTianji NiXi'an Jiaotong UniversityZLZhuo LiXi'an Jiaotong University

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Implication

Compares discharge characteristics and antimicrobial effects of electrode configurations in plasma jets, indicating optimal designs for enhanced performance.

Key Points

  • The aim is to investigate how different electrode configurations affect discharge dynamics and antimicrobial performance of cold atmospheric pressure plasma.
  • Systematic comparison of six electrode configurations under needle-ring-ring structure.
  • Discharge imaging and optical emission spectroscopy were utilized.
  • Reactive species concentrations (H2O2, NO2−, NO3−) were analyzed.
  • Antibacterial efficacy was tested using Staphylococcus aureus with varying treatment durations.
  • The bottom ring grounded configuration produced stronger discharges than floating setups.
  • The upper ring floating and bottom ring grounded configuration yielded the most intense plasma jet.
  • Reactive species concentrations were highest with the optimal configuration.
  • Antibacterial efficacy increased significantly with treatment duration across configurations.

Cite This Study

Ge et al. (2026) studied this question.

synapsesocial.com/papers/698c1cc1267fb587c655f62fhttps://doi.org/10.1063/5.0299415
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