Abstract Through this work, we have elucidated the mechanism of hydroxyl radicals (OH • ) generation and its life time measurements in biosolution. We observed that plasma-initiated ultraviolet (UV) photolysis were responsible for continues OH species, resulted to be major reactive species (RS) solution. The density lifetime acted inversely proportional each other with increasing depth inside cause increased solution is predicted using theoretical semiempirical calculations. Further, predict...

Herein, we report on surface plasmon (SP)-sensitive semitransparent inverted polymer photovoltaic (PV) devices that are based multilayered material systems consisting of poly(3-hexylthiophene): fullerene-derivative bulk-heterojunction PV layers and thin gold or silver anodes. We demonstrate these allow the simultaneous generation both electrical power SPs their anodes for photoexcitation just above optical absorption edge layers, resulting not only in attenuated total reflection, but also...

There is a growing body of literature that recognizes the importance plasma treated water (PTW) for inactivation microorganism. However, very little attention has been paid to role reactive nitrogen species (RNS) in deactivation bacteria. The aim this study explore RNS bacterial killing, and develop system with increased sterilization efficiency. To increase concentration oxygen (RONS) solution, we have used vapor systems (DI water/HNO3 at different wt%) combined using N2 as working gas....

Reactive oxygen and nitrogen species can have either harmful or beneficial effects on biological systems depending the dose administered of organism exposed, suggesting that application reactive possibly produce contradictory in disease control, pathogen inactivation activation host resistance. A novel technology known as atmospheric-pressure non-thermal plasma represents a means generating various adversely affect pathogens (inactivation) while simultaneously up-regulating defense genes....

Plasma medicine is an upcoming research area that has attracted the scientists to explore more deeply utility of plasma. So, apart from treating biomaterials and tissues with plasma, we have studied effect soft plasma different feeding gases such as Air, N2 Ar on modification biomolecules. Hence, in this work used biomolecules proteins ((Hemoglobin (Hb) Myoglobin (Mb)), calf thymus DNA amino acids. The structural changes or been using circular dichroism (CD), fluorescence spectroscopy,...

Abstract Atmospheric-pressure non-thermal bio-compatible plasma is a partially ionized gas with electrically charged particles. Previous studies demonstrated that dielectric barrier discharge (DBD) could induce apoptosis of various cancer cells, in particular demonstrating the selective cytotoxicity cells over normal cells. Therefore, DBD can be considered as potential treatment method for clinical applications. We previously developed microwave jet system, producing nitric oxide called...

Abstract Bacteria can be inactivated through various physical and chemical means these have always been the focus of extensive research. To further improve methodology for ends, two types plasma systems were investigated: nano-second pulsed (NPP) as liquid discharge an Argon gas-feeding dielectric barrier (Ar-DBD) a form surface plasma. understand sterilizing action different sources, we performed experiments with Staphylococcus aureus ( S. ) bacteria (wild type) multidrug resistant...

An argon plasma jet at atmospheric pressure was operated various gap distances between the nozzle of and water surface in order to study formation OH N2 species vicinity surface. Plasma generated using a 24 kHz sinusoidal power supply steady gas flow-rate 200 sccm. The electron temperature rotational were measured optical emission spectroscopy found decrease with increasing distance. Meanwhile, density calculated from current measurement increased average concentration reduced 6.10 × 1015...

A nitrogen microplasma jet operated at atmospheric pressure was developed for treating thermally sensitive materials. For example, the plasma sources in treatment of vulnerable biological materials must operate near room temperature pressure, without any risk arcing or electrical shock. The device by an power less than 10W exhibited a long about 6.5cm with 300K, not causing harm to human skin. Optical emission measured wide range 280–800nm indicated various reactive species produced jet.

Stable superhydrophobic coatings on various substrates are attained with an in-line atmospheric rf plasma process using CF4, H2, and He. The coating layer is composed of CFx nanoparticulates has average roughness approximately 10 nm. This much smaller than other surfaces reported for superhydrophobicity in the literature. produced both metallic insulating without any need separate microroughening or vacuum lines.

Escherichia coli and Bacillus subtilis spores were treated with an atmospheric plasma mixture created by the ionization of helium oxygen to investigate inactivation efficiency a low-temperature below 70 degrees C.An electrical discharge was produced at radio frequency (RF) 13.56 MHz, connected perforated circular electrode spacing 1-15 mm. The gas 0-2% oxygen. For treatment, dried E. cell or B. endospore suspension on cover-glass exposed downstream from holes in RF-powered electrode....

Non-thermal atmospheric pressure plasma jet could generate various kinds of radicals on biosolution surfaces as well inside the biosolutions. The electron temperature and ion density for this non-thermal have been measured to be about 0.8~1.0 eV 1 × 1013 cm−3 in experiment, respectively, by collisional radiative model collector current. In context, hydroxyl OH radical biosolutions has also investigated experimentally ultraviolet absorption spectroscopy when Ar bombarded onto them. It is...

Recently, atmospheric-pressure non-thermal plasma-jets (APPJ) are being for the cancer treatment. However, APPJ still has drawbacks such as efficiency and rise in temperature after So, this work, a synergetic agent D2O vapour is attached to which not only increase of plasma source against treatment, but also controlled during OD generated by combination + N2 helped enhancing APPJ. We observed induced apoptosis on melanocytes G361 cells through DNA damage signalling cascade. Additionally, we...

Potentiality of non‐thermal atmospheric pressure plasma in activating plant development has been evaluated this study. Seed germination rate Coriander sativum , a herbaceous with slow rate, significantly increased over time compared to control after micro DBD (dielectric barrier discharge) treatment N 2 feeding gas. No more increase seed observed when the transferred energy dose was 0.65 J per during generation, regardless gases. Germination and seedling growth have also elevated by...

Seed sterilization is essential for preventing seed borne fungal diseases. Sterilization tools based on physical technologies have recently received much attention. However, available information very limited in terms of efficiency, safety, and mode action. In this study, we examined antifungal activity ozone arc discharge plasma, potential sterilization. our results, plasma shown differential effects, depending the environment associated with spores (freely submerged water or infected...

Abstract In this study, we show the selective and efficient anti-cancer effects of plasma (at a low dose) when cell metabolic modifiers are also included. 2-deoxy-D-glucose (2-DG), glycolytic inhibitor, was used with effective doses non-thermal plasma, synergistically attenuating viability inducing caspase-dependent independent death. The combination treatment decreased intracellular ATP lactate production in various types blood cancer cells vitro . Taken together, our findings suggest that...

A nonequilibrium Ar∕O2 plasma discharge at atmospheric pressure was carried out in a coaxial cylindrical reactor with stepped electrode configuration powered by 13.56MHz rf power supplier. The argon glow high electron density produces oxygen reactive species large quantities. Argon jets penetrate deep into ambient air and create path for radicals to sterilize microbes. sterilization experiment bacterial endospores indicates that an argon-oxygen jet very effectively kills of Bacillus...

Argon plasma jets penetrate deep into ambient air and create a path for oxygen radicals to sterilize microbes. A sterilization experiment with bacterial endospores indicates that an argon-oxygen jet very effectively kills of Bacillus atrophaeus (ATCC 9372), thereby demonstrating its capability clean surfaces usefulness reinstating contaminated equipment as free from toxic biological warfare agents. However, the spore-killing efficiency atmospheric-pressure depends sensitively on...

Abstract A pure carbon dioxide torch is generated by making use of 2.45 GHz microwave. Carbon gas becomes the working and produces a stable torch. The volume almost linearly proportional to microwave power. Temperature flame measured optical spectroscopy thermocouple. Two distinctive regions are exhibited, bright, whitish region high-temperature zone bluish, dimmer relatively low-temperature zone. Study disintegration temperature effects on molecular fraction characteristics in plasma under...

Abstract Nonthermal atmospheric pressure biocompatible plasma (NBP), alternatively called bio-cold plasma, is a partially ionized gas that consists of charged particles, neutral atoms and molecules, photons, an electric field, heat. Recently, nonthermal plasma-based technology has been applied to bioscience, medicine, agriculture, food processing, safety. Various device configurations electrode layouts fast-tracked applications in the treatment biological material surfaces. The NBP action...

In this paper, the electrical discharge characteristics of plasmas generated in coaxial cylindrical electrodes capacitively powered by a radio-frequency power supply at atmospheric pressure are investigated with respect to helium and argon gases. The parameters, voltage (V), current (I), (P), measured for both plasmas, electron temperatures densities them evaluated means equivalent circuit model balance equation. By comparison it is found that discrepant macroscopic plasma, viz.,...

This paper presents a nitrogen microplasma jet that operates at atmospheric pressure and provides details of an observation the striated multilayer discharge patterns formed in plasma jet. The device microhollow electrode is pencil-type configuration produces long cold capable reaching 3.5cm having various excited species shown through optical emission spectrum. By introducing gas flow rate more than 5l∕min, are produced ionization wave propagation.

Atmospheric-pressure plasma jet with air is produced through hollow electrodes and dielectric a hole of 1mm diam. The device operated by injecting pressurized into the electrode hole. at average powers less than 5W exhibits cold about 2cm in length near room temperature, being low enough to treat thermally sensitive materials. Preliminary studies on discharge characteristics application tests are also presented comparing nitrogen argon jet.

An atmospheric-pressure air-plasma jet operating at 60 Hz ac is presented. A plasma with a length of 23 mm was produced by feeding air through porous alumina dielectric installed between an outer electrode and hollow inner electrode. Microdischarges in the are ejected as from 1 hole, showing that temperature decreases to value close room temperature. The disinfects E. coli cells very effectively, eradicating them exposure few seconds flame.