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farshad Sohbaztadeh Lonbar

farshad Sohbaztadeh Lonbar

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId:
HIndex:
Faculty: Science
Address:
Phone: 9125155360

Research

Title
Single channel atmospheric pressure transporting plasma and plasma stream demultiplexing: physical characterization and application to E. coli bacteria inactivation
Type
JournalPaper
Keywords
transporting plasma, atmospheric pressure, E. coli inactivation, antibiotics disc, multi-channel transporting plasma
Year
2017
Journal JOURNAL OF PHYSICS D-APPLIED PHYSICS
DOI
Researchers Azadeh Valinataj Omran ، farshad Sohbaztadeh Lonbar ، Seyedeh Neda Siadati ، Abasalt Hosseinzadeh Colagar ، Yuri Akishev ، Farzaneh Arefi-Khonsari

Abstract

In this article, we developed transporting plasma sources that operate at atmospheric pressure. The effect of electrode configuration on plasma transporting was investigated. In order to increase the transporting plasma cross-section, we converted a plasma stream into four plasma channels by a cylindrical housing. Electron excitation and rotational temperatures were estimated using optical emission spectroscopy. Furthermore, the electrical and temporal characteristics of the plasma, discharge power and charge deposition on the target were investigated. The propagation characteristics of single and multi-channel transporting plasma were compared with the same cross-sectional area. Two configurations for multichannels were designed for this purpose. Escherichia coli bacteria were exposed to the single and multi-channel transporting discharge for different time durations. After exposure, the results indicated that the inactivation zones were significantly increased by a multi-channel transporting plasma. Finally, E. coli inactivation by those plasma apparatuses was compared with that of several standard antimicrobial test discs such as Gentamicin, Tetracycline, Amoxicillin and Cefixime.