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Cold atmospheric pressure plasma jets as sources of singlet delta oxygen for biomedical applications
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10.1063/1.3601347
/content/aip/journal/jap/109/12/10.1063/1.3601347
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/12/10.1063/1.3601347
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the rf-driven atmospheric pressure plasma jet.

Image of FIG. 2.
FIG. 2.

(Color online) Schematic of the kHz-driven atmospheric pressure plasma jet.

Image of FIG. 3.
FIG. 3.

Typical applied voltage and discharge current waveforms (during one cycle) of the kHz-driven dielectric barrier discharge with operation at 6 kV and at a 20 kHz pulse repetition rate, with a helium flow of 2 slm. The inter-electrode distance is 25 mm.

Image of FIG. 4.
FIG. 4.

(Color online) Experimental setup for measuring the absolute singlet delta oxygen density in the effluent of the kHz-APPJ. A similar setup was used for the rf-APPJ.

Image of FIG. 5.
FIG. 5.

(a) SDO density as a function of the applied 13.56 MHz rf power with a helium flow of 1 slm and different O2 admixtures. (b) SDO density as a function of the power dissipated into the kHz plasma jet when operated at different applied voltages (5–8 kV) and at a 20 kHz pulse repetition rate, with a helium flow of 2 slm and an O2 admixture of 0.5%. The inter-electrode distance is 25 mm. (c) SDO density as a function of the pulse repetition rate while operating the kHz plasma jet at 6 kV, with a helium flow of 2 slm and an O2 admixture of 0.5%. The inter-electrode distance is 25 mm. The corresponding dissipated power is marked on the top axis.

Image of FIG. 6.
FIG. 6.

(a) SDO density as a function of the gas flow while operating the rf plasma jet at 13.56 MHz, with an applied power of 46 W and an O2 admixture of 0.5%. The corresponding gas speed is marked on the top axis. (b) SDO density as a function of the gas flow while operating the kHz plasma jet at 6 kV and at 20 kHz, with an O2 admixture of 0.3%. The inter-electrode distance is 25 mm. The corresponding gas speed is marked on the top axis.

Image of FIG. 7.
FIG. 7.

(a) SDO density as a function of the oxygen admixture while operating the rf plasma jet at 13.56 MHz, with a He flow of 1 slm. (b) SDO density as a function of the oxygen fraction while operating the kHz plasma jet at 6 kV and at 20 kHz, with a He flow of 2 slm.

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/content/aip/journal/jap/109/12/10.1063/1.3601347
2011-06-23
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Cold atmospheric pressure plasma jets as sources of singlet delta oxygen for biomedical applications
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/12/10.1063/1.3601347
10.1063/1.3601347
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