Effects of Atmospheric-Pressure Nonthermal Nitrogen and Air Plasma on Bacteria Inactivation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

17 Scopus Citations
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Author(s)

  • Dezhi Xiao
  • Cheng Cheng
  • Yan Lan
  • Guo Hua Ni
  • Jie Shen
  • Yue Dong Meng

Detail(s)

Original languageEnglish
Article number7547261
Pages (from-to)2699-2707
Journal / PublicationIEEE Transactions on Plasma Science
Volume44
Issue number11
Publication statusPublished - 1 Nov 2016

Abstract

An atmospheric-pressure nonthermal plasma jet operated with nitrogen and air is used to investigate the inactivation of bacterium P. aeruginosa. To better understand the bactericidal efficiency of the reactive species (RS) with a different lifetime, direct and indirect treatments are used to inactivate the bacteria with different initial bacteria numbers and Petri dishes. No obvious difference is observed between the nitrogen and air plasmas in the direct treatment, but the air plasma is more efficient in the indirect treatment due to more O3 and NO. The direct treatment is much more efficient than the indirect one because of the participation of charged particles and RS, such as N2(A), N (4S), O(1S), and O(3P). However, the indirect treatment covers a larger area on account of the more diffusion of the long-lived RS O3 and NO. Our results show that the plasma jet is more suitable for wound therapy although the treated area is small.

Research Area(s)

  • Atmospheric-pressure plasmas, bacteria inactivation

Citation Format(s)

Effects of Atmospheric-Pressure Nonthermal Nitrogen and Air Plasma on Bacteria Inactivation. / Xiao, Dezhi; Cheng, Cheng; Lan, Yan; Ni, Guo Hua; Shen, Jie; Meng, Yue Dong; Chu, Paul K.

In: IEEE Transactions on Plasma Science, Vol. 44, No. 11, 7547261, 01.11.2016, p. 2699-2707.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review