The proposed architecture includes: (1) A 2.45 GHz evanescent-mode cavity that generates near-field plasma at power levels <5 W; (2) Au-coated alumina microspheres (50-200 μm) that passively damped high-energy electrons through plasmonic resonance, which help suppress gas heating; (3) artificial intelligence-assisted control that utilized optical spectroscopy, thermometry, and power monitoring to enforce safety limits (temperature <40°C, leakage <1 mW/cm²). The theoretical modeling uses Maxwell’s equations, Fermi-Dirac statistics, and plasma kinetics, accompanied by simulation optimization.
Predictions indicate that field confinement will occur within 2-3 mm, with exponential decay preventing tissue overheating. The plasmonic array is expected to reduce the electron temperature by 30-45% compared to conventional plasma sources. Simulations suggest that ignition power may be reduced by 60%-70%, with projected temperatures <38°C. This design eliminates the need for high-voltage electrodes, operates at atmospheric pressure (0.5-3 SLPM), and enables disposable tips with leakage level <0.5 mW/cm².