Siam Physics Congress 2016

Analysis of OH radical in Cold Atmospheric-Pressure Plasmas by Using UV Absorption Spectroscopy

Not scheduled

15m

Poster presentation Ion and Plasma Physics

Speaker

Mr Yuthana Thana (Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand.)

Description

Cold atmospheric pressure plasma consisting of OH, O, O3, NO, and NO2 radicals is currently popular in biomedical applications. This is due to its ability on destroying microbes and stimulating on production of new cells. In this work, we have applied ultraviolet (UV) absorption spectroscopy with micro stage XY table add-on for adjustment of radial distance to investigate and measure the density of hydroxyl (OH) in the needle-typed cold atmospheric-pressure plasma jet and dielectric barrier discharge (DBD) plasma and their radial concentration distribution on a surface, which these plasma jets were generated by various argon gas flow rate. Principles and procedures of the UV-absorption spectroscopy technique as well as the experimental results will be reported and discussed in this contribution.

Keyword: OH radical, UV-absorption spectroscopy, Cold atmospheric pressure plasma.