Article
Physics, Fluids & Plasmas
Robert Miotk, Mariusz Jasinski, Jerzy Mizeraczyk
Summary: The paper discusses the efficient conversion of microwave energy into atmospheric-pressure argon plasma in a microwave plasma sheet source (MPSS), proposing an optimization of the design to improve the energy conversion efficiency. The introduction of a capacitive diaphragm into the MPSS transmission line significantly decreased microwave power losses and increased energy conversion efficiency up to about 97% for incident powers of 500 W, 750 W, and 1000 W.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Polymer Science
Caroline Aymes-Chodur, Hanene Salmi-Mani, Diana Dragoe, Nadine Aubry-Barroca, Marie Buchotte, Philippe Roger
Summary: The surface of Polydimethylsiloxane (PDMS) was functionalized through a three-step process involving microwave plasma treatment, reaction with mercaptosilanes, and thiol-ene photopolymerization. The purpose of using a bio-based monomer was to give antibacterial and antifouling properties to the PDMS surface. Grafting and photopolymerization were successfully confirmed through various analytical methods, particularly X-Ray Photoelectron Spectroscopy.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Chemistry, Physical
Helena Nowakowska, Dariusz Czylkowski, Bartosz Hrycak, Mariusz Jasinski
Summary: A new type of microwave plasma source is introduced in this study, where plasma at atmospheric pressure is generated. Different configurations were studied in terms of electric field and power distribution, with the results showing that near-zero radiation reduction is possible for the closed configuration, while the radiated power to entering power ratio is always greater than 30% for other configurations.
Article
Engineering, Chemical
Geon Woo Yang, Se Min Chun, Sang Yun Jeong, Yong Cheol Hong
Summary: In this study, a nitrogen microwave plasma torch was used to improve the flowability of WC-12Co powder, achieving a significant improvement in flowability and making it suitable for continuous treatment and mass production of plasma spray powders.
Article
Physics, Fluids & Plasmas
Albina Tropina, M. N. Shneider, R. B. Miles
Summary: A kinetic model of a non-equilibrium water vapor plasma created by a nanosecond pulsed discharge at elevated temperatures and at low pressure is presented. Simulation results show good agreement with experimental data, revealing that the decay of plasma in pure water vapor is controlled by dissociative recombination and the formation of vibrationally excited species can be observed.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Astronomy & Astrophysics
S. Imada
Summary: This study investigated the plasma heating process during a solar flare on September 10, 2017 and found that the time-dependent ionization process influences the ionization effect. The study also showed a significant reduction in nonthermal velocity along the downstream of the reconnection outflow, even when considering the time-dependent ionization process.
ASTROPHYSICAL JOURNAL LETTERS
(2021)
Article
Environmental Sciences
Ziyao Jie, Cheng Liu, Daolu Xia, Guixin Zhang
Summary: A low-power microwave plasma torch (MPT) was used to treat and vitrify solid waste, showing lower power demand and heat loss compared to conventional thermal plasma technology. By adding specified ratios of discarded glass scraps, the residual ash of solid waste can be vitrified. Through experiments, it was found that the microwave plasma treatment process can convert 96 wt.% of solid waste into nonpolluting gases.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Electrical & Electronic
Paiwen Fang, Chang Rao, Chao Liao, Shujian Chen, Zhisheng Wu, Xing Lu, Zimin Chen, Gang Wang, Jun Liang, Yanli Pei
Summary: This study reports the effects of O-2 or N-2 microwave plasma treatment on beta-Ga2O3 surface prior to Schottky metal deposition. The device uniformity of Schottky barrier diodes is significantly improved by the microwave plasma treatments without any degradation. The relatively low Schottky barrier height with O-2 microwave plasma treatment corresponds to high reverse leakage current.
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2022)
Article
Physics, Fluids & Plasmas
Miroslav Snirer, Jozef Toman, Vit Kudrle, Ondrej Jasek
Summary: This paper experimentally investigates the processes governing single- and multi-filament regimes in an atmospheric pressure microwave (MW) torch operated in argon. The main parameter controlling the number of filaments is found to be MW power. The single-filament regime exhibits typical properties of surface wave discharges and the length or thickness of the filament(s) varies almost linearly with input MW power.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Yuhao Sun, Bo Zhang, Chenxu Wang, Guanjun Zhang
Summary: This study investigates the propagation characteristics of surface ionization waves on flexible substrates, showing that the waves start near high-voltage electrodes and converge at ground electrodes in a symmetrical petal pattern. Furthermore, bending the flexible sheet can change the charge density without affecting the propagation of surface ionization waves.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Engineering, Mechanical
Adam Bennett, Nan Yu, Marco Castelli, Guoda Chen, Alessio Balleri, Takuya Urayama, Fengzhou Fang
Summary: This study investigates the application of a coaxial electrode microwave induced plasma torch for glass surface modification, detailing the process improvements and experimental testing that resulted in the creation of a super-hydrophilic surface on glass.
FRONTIERS OF MECHANICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Olivier Teraube, Lea Gratier, Jean-Charles Agopian, Monica Francesca Pucci, Pierre-Jacques Liotier, Samar Hajjar-Garreau, Elodie Petit, Nicolas Batisse, Angelique Bousquet, Karine Charlet, Eric Tomasella, Marc Dubois
Summary: This study aims to improve the compatibility between flax natural fibers and mostly dispersive polymers by grafting fluorine atoms onto the fiber surface using plasma fluorination. The covalently grafted fluorine atoms reduce the fiber polarity and make it compatible with dispersive polymers. The mechanical properties and fluorine release during fiber combustion were investigated and no negative impact was observed. This eco-friendly approach improves the wettability of the fibers and shows potential for enhancing the mechanical performance of eco-composites reinforced with fluorinated fibers.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Guiyin Xu, Haibin Jiang, Myles Stapelberg, Jiawei Zhou, Mengyang Liu, Qing-Jie Li, Yunteng Cao, Rui Gao, Minggang Cai, Jinliang Qiao, Mitchell S. Galanek, Weiwei Fan, Weijiang Xue, Benedetto Marelli, Meifang Zhu, Ju Li
Summary: The study developed a carbon foam microwave plasma process to convert unsorted white wastes into gases and solid carbon, which can be buried as artificial coal. The process is self-perpetuating and does not require pre-sorting or washing, making it highly promising and feasible.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Thomas J. Bullard, Kyle Frische, Charlie Ebbing, Stephen J. Hageman, John Morrison, John Bulmer, Enam A. Chowdhury, Michael L. Dexter, Timothy J. Haugan, Anil K. Patnaik
Summary: We examined the electromagnetic emission from two photo-illuminated linear arrays composed of inductively charged superconducting ring elements. The arrays were illuminated by an ultrafast infrared laser, triggering microwave broadband emission. Increasing the element count and frequency resulted in a narrowing of the forward radiation lobe, demonstrating directed GHz emission. This study suggests the potential for achieving higher frequencies and a larger number of elements, enabling a unique pulsed array emitter concept spanning from microwave to terahertz frequencies.
SCIENTIFIC REPORTS
(2023)
Article
Nanoscience & Nanotechnology
Weimin Xu, Shibo Li, Weiwei Zhang, Bo Ouyang, Wenbo Yu, Yang Zhou
Summary: Ti3C2Tx shows microwave absorption properties due to dielectric loss, but lacks magnetic loss capability for satisfactory MA performance. Modification with magnetic particles is effective but may lead to higher density and complicated fabrication. N-doping of Ti3C2Tx through N-2 plasma treatment enhances MA properties significantly, showing potential for industrial production and functional applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
M. Wnukowski, A. W. van de Steeg, B. Hrycak, M. Jasinski, G. J. van Rooij
Summary: The study showed that adding hydrogen can increase methane conversion, acetylene and ethylene yield and selectivity in a microwave moderate pressure plasma reactor. It was also found to decrease the output of problematic soot-like products. This indicates that hydrogen addition is a simple yet effective method for enhancing selectivity in plasma reforming of methane.
Article
Engineering, Electrical & Electronic
Magdalena Budnarowska, Jerzy Mizeraczyk
Summary: This paper presents the numerical simulation results of the interaction between a plane electromagnetic wave and a metasurface consisting of split-ring resonator (SRR) unit cells with a resonant frequency f = 2.5 GHz. The calculations show that the SRR metasurface strongly reflects the plane electromagnetic wave at the magnetic resonance frequency of the SRR metasurface, and this phenomenon was confirmed through visualization. The numerical method used in this study appears to be attractive for visualizing electromagnetic phenomena in metamaterials.
PRZEGLAD ELEKTROTECHNICZNY
(2021)
Article
Physics, Fluids & Plasmas
Robert Miotk, Mariusz Jasinski, Jerzy Mizeraczyk
Summary: The paper discusses the efficient conversion of microwave energy into atmospheric-pressure argon plasma in a microwave plasma sheet source (MPSS), proposing an optimization of the design to improve the energy conversion efficiency. The introduction of a capacitive diaphragm into the MPSS transmission line significantly decreased microwave power losses and increased energy conversion efficiency up to about 97% for incident powers of 500 W, 750 W, and 1000 W.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Andrzej Sikora, Dariusz Czylkowski, Bartosz Hrycak, Magdalena Moczala-Dusanowska, Marcin Lapinski, Miroslaw Dors, Mariusz Jasinski
Summary: The experimental results show that the wettability of PMMA material was improved after argon plasma treatment, accompanied with changes in surface chemical composition and long-term improved wettability. Changes in surface roughness parameters were observed as well, but their dependence on the number of plasma scans is irregular.
SCIENTIFIC REPORTS
(2021)
Article
Energy & Fuels
Magdalena Budnarowska, Jerzy Mizeraczyk
Summary: This study presents a numerical analysis of the temporal and spatial evolution of the electromagnetic field in a shielding enclosure with aperture following transient interference by a subnanosecond high-energy pulse. The research illustrates the existence of two unknown phases - wave phase and interference phase - showcasing the long-lasting and challenging-to-assess impact on shielding effectiveness.
Article
Physics, Fluids & Plasmas
Helena Nowakowska, Dariusz Czylkowski, Bartosz Hrycak, Mariusz Jasinski
Summary: Numerical analysis was conducted on radiation from an unshielded microwave plasma source, with results showing that a torch with a shielding tube of 55mm radius can achieve over 95% radiated power ratio. Factors such as electron density, tube height and radius have an impact on reflected wave power, power absorbed in the plasma, radiated power and power entering the discharge.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Energy & Fuels
Magdalena Budnarowska, Szymon Rafalski, Jerzy Mizeraczyk
Summary: This study aimed to better understand the interaction of electromagnetic waves with metamaterials through virtual visualization. The researchers used CST Studio software to simulate and comprehensively model high-frequency electromagnetic fields and conducted virtual visualizations of the interaction of an electromagnetic plane wave with a split-ring resonator (SRR) metamaterial structure. The results confirmed the total reflection phenomenon of the electromagnetic plane wave on the SRR structure and also showed the transmission of the wave at a detuned frequency. These visualizations provide unique educational presentations for understanding the interaction of electromagnetic waves with SRR structures at different frequencies.
Article
Chemistry, Physical
Helena Nowakowska, Dariusz Czylkowski, Bartosz Hrycak, Mariusz Jasinski
Summary: A new type of microwave plasma source is introduced in this study, where plasma at atmospheric pressure is generated. Different configurations were studied in terms of electric field and power distribution, with the results showing that near-zero radiation reduction is possible for the closed configuration, while the radiated power to entering power ratio is always greater than 30% for other configurations.
Editorial Material
Chemistry, Multidisciplinary
Mariusz Jasinski
APPLIED SCIENCES-BASEL
(2022)
Review
Energy & Fuels
Sergii Bespalko, Jerzy Mizeraczyk
Summary: This paper reviews the progress of using plasma-driven solution electrolysis (PDSE) for hydrogen production and discusses the effects of various parameters on energy efficiency, energy yield, and hydrogen production rate. The results show that in the cathodic regime of PDSE, the hydrogen production rate and energy efficiency are significantly higher compared to the anodic regime.
Article
Energy & Fuels
Sergii Bespalko, Jerzy Mizeraczyk
Summary: The results of an experimental study on hydrogen production at a tungsten discharge electrode with negative polarity in the DC electrolysis of a typical 10 wt% Na2CO3 aqueous solution in three operational regimes (the Faradaic, transition, and plasma-driven solution electrolysis (PDSE)) are presented. The highest hydrogen production rate was achieved in the cathodic PDSE regime at the applied DC voltage of 198 V. However, the energy yield of hydrogen production in the PDSE regime was lower than that in the Faradaic regime. The energy balance analysis showed that most of the electrical energy consumed in the cathodic PDSE regime was spent on heating and evaporation of the electrolytic solution.
Article
Energy & Fuels
Magdalena Budnarowska, Jerzy Mizeraczyk, Kamil Bargiel
Summary: Due to the increased threat of high-power electromagnetic pulse attacks, there is a growing interest in metallic enclosures with high shielding effectiveness. However, necessary technological apertures in these enclosures can reduce their effectiveness. This paper presents numerical simulation results on the penetration and internal propagation of high-power electromagnetic pulses in an apertured enclosure, revealing the formation mechanism of the electromagnetic field inside the enclosure caused by the subnanosecond high-power pulse.
Editorial Material
Chemistry, Multidisciplinary
Mariusz Jasinski
APPLIED SCIENCES-BASEL
(2023)
Article
Multidisciplinary Sciences
Bartosz Hrycak, J. Mizeraczyk, D. Czylkowski, M. Dors, M. Budnarowska, M. Jasinski
Summary: This paper presents a microwave plasma-based technology for efficient hydrogen production from synthetic biogas. The experiment demonstrated that the waveguide-supplied metal cylinder-based microwave plasma source (MPS) could carry out the steam reforming of synthetic biogas without soot formation and microwave discharge extinction. It also introduced a new parameter, energy-CH4 feedstock consumption yield, to describe the MPS performance.
SCIENTIFIC REPORTS
(2023)
