high frequency

Terahertz absorption spectroscopy for measuring atomic oxygen densities in plasmas - Dataset

This data set contains the data shown in the corresponding publication in Plasma Sources Science and Technology (https://doi.org/10.1088/1361-6595/acb815). This publication presents the first implementation of terahertz (THz) quantum cascade lasers (QCLs) for high-resolution absorption spectroscopy on plasmas. Absolute densities of ground state atomic oxygen were directly obtained by using the fine structure transition at approximately 4.75 THz.

Extended reaction kinetics model for non-thermal argon plasmas and its test against experimental data - Dataset

Modelling results obtained using an extended reaction kinetics model (RKM) suitable for the analysis of weakly ionised, non-thermal argon plasmas with gas temperatures around 300K at sub-atmospheric and atmospheric pressures are presented. Modelling was performed by means of a time- and space-dependent fluid model for two different dielectric barrier discharge configurations as well as for a micro-scaled atmospheric-pressure plasma jet setup. The results are also compared with measurements, as well as with modelling data obtained by use of a previously established 15-species RKM.

Spatial distribution of HO₂ in an atmospheric pressure plasma jet investigated by cavity ring-down spectroscopy - dataset

The data set comprises full cavity ring-down spectra and absorption coefficients obtained from on-off-resonance measurements, in order to determine the spatial distribution of HO₂ in the cold atmospheric pressure plasma jet kINPen-sci. Therefore, the plasma jet was operated with 3 slm Ar and 3000 ppm water, and was equipped with a gas curtain of 5 slm O₂. To determine the effective absorption length, the HO₂ absorption was measured in radial direction. These radial fits had a Gaussian-like shape.

kINPen® MED

The kINPen® MED is a member of the kINPen® family certified as a class IIa medical device. In medical practice, the kINPen® MED is primarily used for treating chronic wounds and pathogen-induced skin diseases. One of the key features allowing the certification as a medical device is the low gas temperature of typically 35...38 °C. A vast number of publications investigating the kINPen® MED is available, the section below presents only selected examples.

The device is commercially available from neoplas med GmbH.

Venturi-DBD (VDBD)

The gas pressure is an effective parameter to control plasma-chemical reactions, but its adjustment often requires substantial effort. In the Venturi-DBD (VDBD), the pressure can be set to any value between 100 mbar and 1000 mbar reliably and reproducibly. Using a Venturi pump for vacuum generation ensures that the system is affordable and almost maintenance-free. With air as process gas, the output gas composition can seamlessly be adjusted from a strongly ozone-dominated regime to a nitrogen oxides-only-regime including nitric oxide.

kINPen® IND

Plasma as a cross-sectional technology in many industry branches, but also in research laboratories, is an indispensable tool in surface treatment. Plasma technology is used everywhere where quality, productivity, environmental sustainability, precision and flexibility is important. Surfaces are cleaned, activated and decontaminated at atmospheric pressure with the handy kINPen® IND. The device is particularly used for surface treatment of temperature-sensitive materials as, for instance, plastics.

Non-thermal atmospheric pressure plasma jet (ntAPPJ)

The non-thermal atmospheric pressure plasma jet (ntAPPJ) is composed of a quartz capillary with an inner diameter of 4 mm and an outer diameter of 6 mm. The plasma jet operates at a high frequency of 27.12 MHz in pure noble gases (helium, neon, argon, krypton) at flow rates between 0.1 and 2 slm. Small molecular gas admixtures or organic vapors can be added to the carrier gas. Two outer ring electrodes (width 5 mm, distance 5 mm) are adjusted concentrically with the capillary axis.

HelixJet

The HelixJet is a capacitively coupled radio-frequency (RF) plasma source operating at atmospheric pressure. The RF power is applied to two double helix electrodes. The electrodes are placed outside a quartz tube fed by the working gas. The HelixJet has unique features highly relevant for practical applications. The innovative double helix electrode design enables extremely stable and homogeneous plasma conditions at low gas flow rates. This plays a crucial role for the quality and reproducibility of several applications, e.g.

Device, system, and method for antimicrobial treatment, method for producing the device, and computer program

The invention relates to a device, to a system, and to a method for antimicrobial treatment during performance of operations in bodies, to a method for producing the device, and to a computer program. A device (11) is provided for antimicrobial treatment during performance of operations, in particular minimally invasive operations, in bodies. Said device comprises a main body (1) for partial introduction into a body and at least one plasma source (12) arranged in at least one portion of the main body (1).

Plasma treatment device

A plasma treatment device having an electrode arrangement (3) for generating a plasma in a supplied gas stream. The electrode arrangement has at least one movably mounted electrode. The plasma is preferably a cold atmospheric pressure plasma and can be generated so as to vary in location by means of movement of the at least one electrode.