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Development and Characterization of a Portable Atmospheric-Pressure Argon Plasma Jet for Sterilization

[+] Author Affiliations
Zhi-Hua Lin, Jong-Shinn Wu, Chen-Yon Tobias Tschang, Tuoh Wu, Yi-Ning Shen, Chih-Tung Liu, Wen-Yea Jang

National Chiao Tung University, Hsinchu, Taiwan

Chi-Feng Su, Min-Tzu Ho

National Cheng Kung University, Tainan, Taiwan

Paper No. IMECE2015-51117, pp. V003T03A075; 7 pages
doi:10.1115/IMECE2015-51117
From:
  • ASME 2015 International Mechanical Engineering Congress and Exposition
  • Volume 3: Biomedical and Biotechnology Engineering
  • Houston, Texas, USA, November 13–19, 2015
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5738-0
  • Copyright © 2015 by ASME

abstract

In this study, we would like to develop a portable round argon atmospheric-pressure plasma jet (APPJ) which can be applied for general use of bacteria inactivation. The APPJ was characterized electrically and optically, which include measurements of absorption power, gas temperature and optical properties of plasma generated species. Measured OH* number density at 5 mm downstream was estimated to be 5.8 × 1015 cm−3 and the electron density and electron temperature were estimated to be 2.4 × 1015 cm−3 and 0.34 eV, respectively, in the discharge region. This APPJ was demonstrated to effectively inactivate E. coli within seconds of treatment, which shows its great potential in the future use of general bacteria inactivation and sterilization.

Copyright © 2015 by ASME

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