Fundamental Studies of Transient, Atmospheric-Pressure, Small-Scale Plasmas
Abstract
Fundamental studies of nanosecond pulsed atmospheric pressure plasmas including a millimeter He-O2 plasma jet, generated with a concentric tubular electrode configuration, and micrometer He plasma jet, generated with a single electrode, were conducted. These studies include 1)temporally and spatially resolved measurements of atomic oxygen ground state (O3P) in the 2-cm long, 1-mm He-O2 plasma jets using Two-Photon Absorption Laser Induced Fluorescence (TALIF); 2) plasma dynamics and emission spectroscopic comparisons of single-electrode helium microplasma jets that was excited with 5 ns or 164 ns, 8 kV pulses at 500 Hz. Applications of the atmospheric pressure plasma jets and jet arrays (e.g. plasma brush) were explored for surface decontamination against pathogenic bacteria and biofilms, as well as for treatment of cervical cancer, in vitro. Other studies involving portable nanosecond pulsed power generation based gas switches or photoconductive solid state switches, non-equilibrium surface plasma chemistry and applications were also conducted.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 23, 2017
- Accession Number
- AD1025348
Entities
People
- Chunqi Jiang
Organizations
- University of Southern California