Abstract
ABSTRACTCold atmospheric plasma (CAP) can be generated and operated easily without using a vacuum device. However, its characteristics and applications are not yet completely clear. In this paper, a low-cost system, equipped with two aluminum housings with single- and dual-inlet cold atmospheric plasma sources (CAPS), was designed for investigating CAP characteristics. A commercial alternating current (AC) plasma power source was used in this study. Compressed air, oxygen, and nitrogen were used as the gas sources for measuring the temperature distribution empirically. The results showed that different gas-supplying methods affect the temperature distribution significantly. The temperature of the air plasma source is ~ 60 °C at the outlet and decreases slowly with the gap distance. Additionally, the emission optical spectrogram of CAPS is similar to that of high-temperature plasma. These CAPS show the potential applications of air plasma for metal surface modification and medical treatment for urticaria in the future.
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