(a) Photograph of the jet/plume from the quartz tube and (b) schematic of the experimental setup with diagnostics systems.
Waveforms of voltage and total current.
Plume length as functions of (a) gas flow rate of He and Ar gas (b) of the additive oxygen flow rate for the He and Ar jet (at the applied voltage 1.8 and 2.0 kV).
Measured plume temperature as a function of (a) applied voltage (at 1 l/min) and of (b) gas flow rate (at 1.8 and 2.0 kV) for the He and the Ar jet.
Comparison of experimental and simulated spectra of OH (, 306–310 nm) transition for measurement of the He jet (2.0 kV, 1 l/min).
(a) Recorded line and Gaussian fit of the He–Ne laser radiation, (b) recorded He line and Voigt fit, and (c) line shape obtained from the experiment and Voigt fit.
Emission spectra from 200 to 900 nm observed in the He jet driven by (a) pulsed wave (2.0 kV, 1 l/min), (b) sinusoidal wave (, 1 l/min), and (c) RF power (10 W, 2 l/min).
Emission spectra from 200 to 900 nm observed in the Ar jet driven by (a) pulsed wave (2.0 kV, 1 l/min), (b) sinusoidal wave (, 2 l/min), and (c) RF power (10 W, 2 l/min).
Variations of the emission intensities from NO, OH, and O as a function of the amount of additive for the pulsed Ar jet.
(a) Side view (1.8–2.2 kV, 1–6 l/min) of the accumulated ICCD image of the pulsed Ar jet under the shutter mode. (b) Front view of the jet under the gate mode (1.8 kV, 2 l/min).
High-speed photographs of the pulsed Ar plasma plume taken under the gate mode in the voltage rising phase for various conditions (applied voltage and duty cycle); (a) 2.0 kV, 50%, (b) 1.8 kV, 50%, (c) 1.8 kV, 25%, and (d) 1.8 kV, 10%. The pulse repetition rate is 50 kHz and the flow rate is 2 l/min. (e) Image of plume in the voltage falling phase. The duty cycle is 50%.
Average bullet velocity vs (a) the applied voltage and (b) the duty cycle. Bullet velocities for several values of (c) the applied voltage and (d) the duty cycle vs time.
MCF-7 cells were stained with DAPI, and observed under fluorescence microscopy at a magnificence of ; arrows indicate apoptotic cells. The images observed in the pulsed Ar plasma jet with different conditions: (a) nontreated control, (b) Ar only, (c) Ar with the 5 SCCM of oxygen gas, and (d) Ar with the 10 SCCM of oxygen gas.
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