Work

Particle Evolution of Flexible Pulsed Coplanar Dielectric Barrier Discharge Plasma Sheets and Its Effect on Sterilization

Year: 2025

Type: article

Abstract: ABSTRACT Plasma sources using soft substrates are gaining attention in biomedicine for their flexibility. Balancing surface discharge stability on thin films with biomedical effects is crucial. Despite progress in flexible plasma sources design, optimization of plasma generation and particle evolution remains unclear. This study uses nanosecond‐edge pulses to excite a plasma sheet with an interdigitated electrode, exploring discharge properties and particle evolution. Sterilization of Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia coli is assessed under varying conditions. Results show discharge intensity, particle generation, and sterilization effect increase with pulse amplitude and frequency. Optimal settings for stability, safety, and efficacy are 3–4 kV, 0.5–1 kHz, and 100 ns pulse rising edge. The bactericidal mechanism is mainly due to active particles, regulated by excitation parameters.

Source: Plasma Processes and Polymers

DOI: 10.1002/ppap.70014

Authors: Yuanyang Liu, Yuhao Sun, Hang Zhao, Bo Zhang, Guan‐Jun Zhang

Institutions: State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University

Language: English

Topic: Plasma Applications and Diagnostics

Subfield: Radiology, Nuclear Medicine and Imaging

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: bronze

Funders: National Natural Science Foundation of China, Natural Science Foundation for Young Scientists of Shanxi Province, Young Scientists Fund, Key Research and Development Projects of Shaanxi Province