RT Journal Article ID 5fc2c01e0a0c500b A1 Awakowicz, Peter A1 Baldus, Sabrina A1 Stapelmann, Katharina A1 Engelhardt, Max A1 Bibinov , Nikita A1 Denis, Benjamin T1 Optical Emission Spectroscopy as a Tool for Characterization of Technical Plasmas in Medical Applications JF Plasma Medicine JO PMED YR 2012 FD 2014-06-30 VO 2 IS 1-3 SP 151 OP 168 K1 OES K1 plasma sterilization K1 ICP K1 CCP K1 DBD K1 HPEM AB Understanding the interactions of technical plasma discharges with biological systems is a key aspect to developing and optimizing plasma devices for use in medical practice. In this article, the characterization of 3 different plasma devices with absolutely and relatively calibrated optical emission spectroscopy is presented. Two low-pressure setups are described: a double inductively coupled plasma that serves as laboratory setup for basic research of sterilization of spores and germs and a very high frequency capacitively coupled plasma designed to meet commercial needs. An atmospheric pressure dielectric barrier discharge is designed for wound and skin treatment. Sterilization tests for each setup demonstrate the capability to inactivate bacteria and bacterial spores efficiently. In case of the double inductively coupled plasma, wavelength-dependent photo sterilization efficiency is investigated. As a result, Aspergillus brasiliensis spores are efficiently inactivated by irradiation below 235 nm, whereas Bacillus atrophaeus spores are sensitive to irradiation between 235 and 300 nm. The very high frequency capacitively coupled plasma demonstrates a reduction greater than log 6 of B. Atrophaeus endospores in a process challenge device, a metal box with 3 small slits (3 mm). With direct DBD treatment, a full inactivation of Escherichia coli is achieved within 10 seconds of treatment time. From measurements, data can be extracted only at certain positions. Simulations deliver spatially resolved data from whole-discharge volume. PB Begell House LK https://www.dl.begellhouse.com/journals/5a5b4a3d419387fb,23f772c6503d3a49,5fc2c01e0a0c500b.html