The use of a Langmuir probe system in two GEC cells is reviewed. The major problems associated with probe diagnostics in a GEC cell are outlined and discussed. While the data base is still insufficient to give definitive values for many parameters, a number of standard measurements are put forward. The plasma density in argon is 9×109 cm-3 (±20 %) at an applied rf voltage of 250 V (500 V peak t...

Previous studies on the antimicrobial activity of cold atmospheric pressure argon plasma showed varying effects against mecA+ or mecA-Staphylococcus aureus strains. This observation may have important clinical and epidemiological implications. Here, the antibacterial activity of argon plasma was investigated against 78 genetically different S. aureus strains, stratified by mecA, luk-P, agr1-4, ...

in this paper, construction of triplet atmospheric plasma jet using argon, air, oxygen and nitrogen gases is reported. bactericidal effect of the plasma jet is also investigated. to that end, longitudinal geometric configuration for the electrodes was chosen because it would increase the jet length. electrical characteristics, jet length dependencies on the applied voltage and gas flow rate wer...

OBJECTIVE So-called cold physical plasmas for biomedical applications generate reactive oxygen and nitrogen species and the latter can trigger DNA damage at high concentrations. Therefore, the mutagenic risks of a certified atmospheric pressure argon plasma jet (kINPen MED) and its predecessor model (kINPen 09) were assessed. METHODS Inner egg membranes of fertilized chicken eggs received a s...

Wound therapy improves every year by developing new wound treatment options or by advancing already existing wound materials, for example, adding self-releasing analgesic drugs or growth factors to wound dressings, or by binding and inactivating excessive proteases. Also new dressing materials based on silk fibers and enhanced methods to reduce bacterial burden, for example, cold argon plasma, ...

This study investigated the inactivation efficiency of cold atmospheric pressure plasma treatment on Bacillus subtilis endospores dependent on the used feed gas composition and on the surface, the endospores were attached on. Glass petri-dishes, glass beads, and peppercorns were inoculated with the same endospore density and treated with a radio frequency plasma jet. Generated reactive species ...

introduction: acquired tracheal stenosis can be created by various malignant or benign causes. the most common cause of acquired non-malignant tracheal stenosis is endotracheal intubation, even for a short period. argon plasma coagulation is a non-contact method of thermal hemostasis. argon plasma coagulation can be used easily and fast and has low depth of penetration.  methods: this study is ...

Introduction: The idea of stable deposits of volatiles in cold permanently shaded regions (PSRs), first advanced by [1], has been revived since observations by Lunar Prospector suggested large amounts of hydrogen in the polar caps. Previous studies have mainly focused on hydrogen (and water) [2] but other important volatiles such as argon could also be trapped. Temperatures in the coldest regio...