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, O${}_3$, NO, and NO${}_2$ radicals is currently popular in biomedical applications. This is due to its ability on destroying microbes and stimulating on production of new cells. For such applications, development of techniques to measure density of any radical in the plasma is important. An optical emission spectroscopy (OES) technique, which is used in most laboratories, has a limitation for estimating the radical density on specific area. In this study, we develop a method to use an UV-absorption spectroscopy for measuring the density of the OH, NO, and NO${}_2$ radicals on sample surfaces. Study on effect of the atmospheric jet with various conditions is performed. Principle and procedure of the UV-absorption spectroscopy technique as well as the experimental results will be reported and discussed in this contribution.
Author
Mr
Yuthana Thana
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
Co-author
Dr
Dheerawan Boonyawan
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
