[en] Conclusions and perspective: Plasma-catalysis is a nascent field. Much remains to be done from the 2020 roadmap. We need to better use the non-equilibrium. • One needs to pay far more attention to the power delivery <=> plasma chemistry relation • Distributed arrangement for the timely excitation/contact of reactive with catalyst? • In-situ separation or chemical rxn freezing? • Multi-function catalysts tuned to gas mixtures? • Sequencing: Use of time- and spatially-distributed excitation? • For nanocatalysts synthesized by plasma, can we test them in-situ?

[en] Full text: The uniqueness of low-temperature plasma is in its ability to change composition in situ. Plasma self-organization could lead to formation of coherent plasma structures. These coherent structures tend to modulate plasma chemistry and composition, including reactive species, the electric field and charged particles. Formation of coherent plasma structures allows the plasma to adapt to external boundary conditions, such as different cells types and their contextual tissues. In this talk we will explore possibilities and opportunities that the adaptive plasma therapeutic system might offer. We shall define such an adaptive system as a plasma device that is able to adjust the plasma composition to obtain optimal desirable outcomes through its interaction with cells and tissues. Various approaches for plasma therapy based on plasma adaptation to target conditions will be reviewed. These approaches are based on the ability of measuring the cellular response to plasma immediately after treatment and modifying the composition and power of plasma via a feedback mechanism. Plasma self-adaptation might be feasible due to self-organization and pattern formation when plasma interacts with targets. Plasma effect on biological targets is influenced by various factors including the plasma jet discharge voltage, gas composition, humidity and cancer cell type. To address this, we present an optimal feedback control scheme to adjust treatment conditions responsive to the biological response.

[en] The kINPen^® plasma jet was developed from laboratory prototype to commercially available non-equilibrium cold plasma jet for various applications in materials research, surface treatment and medicine. It has proven to be a valuable plasma source for industry as well as research and commercial use in plasma medicine, leading to very successful therapeutic results and its certification as a medical device. This topical review presents the different kINPen plasma sources available. Diagnostic techniques applied to the kINPen are introduced. The review summarizes the extensive studies of the physics and plasma chemistry of the kINPen performed by research groups across the world, and closes with a brief overview of the main application fields. (topical review)

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[en] The population growth represents a serious challenge for humankind due to the continuous increase in demand for food. The climate change is also presenting a significant factor on food production due to the change in weather patterns, pest appearance, water availability etc. Therefore it is necessary to develop new and efficient technologies that can enhance productivity while maintaining food quality and safety. One of these technologies are non-equilibrium (non-thermal plasmas) plasmas that are considered as a green alternative to conventional fertilizers in agriculture to improve yields, increase size and robustness of plants, to reduce (or eliminate) the need for pesticides and in the case of final products treatments of food and its packaging. The reason for this is their rich plasma chemistry that is created in gas phase (at room temperature) and can be easily transferred to liquid samples. Plasma chemistry is rich in Reactive Oxygen Nitrogen Species (RONS) [1] and it was shown that low pressure and atmospheric pressure plasmas can be successfully used in stimulation of the seed growth, increase of germination percentage and decontamination, breaking of dormancy or lengthening of the seed sprout [2, 3]. In direct plasma treatments (gas phase plasma is in contact with sample surface) of seeds the surface is activated and different functional groups can be attached resulting in increased wettability, coating with desired compounds or just decontaminated from pathogens [4]. Another successful approach is in treatment of water for production of Plasma Activated Water (PAW) rich in long living RONS [5]. Here we will present some of the recent results in the field of Plasma Agriculture and address future challenges of plasma applications in this field.

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[en] External matching networks are crucial and necessary for operating capacitively coupled plasmas in order to maximize the absorbed power. Experiments show that external circuits in general heavily interact with the plasma in a nonlinear way. This interaction has to be taken into account in order to be able to design suitable networks, e.g., for plasma processing systems. For a complete understanding of the underlying physics of this coupling, a nonlinear simulation approach which considers both the plasma and the circuit dynamics can provide useful insights. In this work, the coupling of an equivalent circuit plasma model and an external electric circuit composed of lumped elements is discussed. The plasma model itself is self-consistent in the sense that the plasma density and the electron temperature is calculated from the absorbed power based on a global plasma chemistry model. The approach encompasses all elements present in plasma systems, i.e., the discharge itself, the matching network, the power generator as well as stray loss elements. While the main result of this work is the conceptual approach itself, at the example of a single-frequency capacitively coupled discharge its applicability is demonstrated. It is shown that it provides an effective and efficient way to analyze and understand the nonlinear dynamics of plasma systems including the external circuit and, furthermore, may be applied to synthesize optimal matching networks. (paper)

[en] The dielectric barrier discharge (DBD) in a cell with a rotating dielectric is investigated in the paper. The distinctive features of low-temperature plasma generation are analyzed in comparison with the DBD cells, which don't contain moving parts

[en] This work is devoted to excimer lamp efficiency optimization by using a homogenous discharge model of a dielectric barrier discharge in a Ne−Xe mixture. The model includes the plasma chemistry, electrical circuit, and Boltzmann equation. In this paper, we are particularly interested in the electrical and kinetic properties and light output generated by the DBD. Xenon is chosen for its high luminescence in the range of vacuum UV radiation around 173 nm. Our study is motivated by interest in this type of discharge in many industrial applications, including the achievement of high light output lamps. In this work, we used an applied sinusoidal voltage, frequency, gas pressure, and concentration in the ranges of 2–8 kV, 10–200 kHz, 100–800 Torr, and 10–50%, respectively. The analyzed results concern the voltage V_p across the gap, the dielectric voltage V_d, the discharge current I, and the particles densities. We also investigated the effect of the electric parameters and xenon concentration on the lamp efficiency. This investigation will allow one to find out the appropriate parameters for Ne/Xe DBD excilamps to improve their efficiency.