Characteristics of atmospheric pressure air micro slot plasma and application to bacterial inactivation

ORAL

Abstract

The E-coli was inactivated using an atmospheric pressure microplasma in air. The microplasma was generated between two parallel aluminum rods are 5 cm long, 3 mm in diameter, maintain 200 $\mu $m wide gaps between two electrodes, and covered with nanoporous alumina films $^{1,2}$. The 20 kHz AC driven discharge is generated between two parallel rods. The plasma gas temperature was measured by emission spectroscopy and FT-IR camera, which is so closed at room temperature. The E-coli sample placed between the two electrodes underwent chemical and physical treat on E-coli sample during the discharge. Experimental results demonstrated a colony forming unit reduction from 10$^{7}$ to 10$^{5}$ within 10 minutes treatment.

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Authors

  • Il Gyo Koo

    • Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523

  • Jin Hoon Cho

    • Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523

  • Woong Moo Lee

    • Department of Chemistry and Division Energy Systems Research, Ajou University, Suwon 443-749, Korea

  • Cameron Moore

    • Colorado State University
    • Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523.
    • Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523

  • George Collins

    • Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523