Article
Physics, Fluids & Plasmas
Jinru Li, Jiao Zhang, Yanhui Wang, Yuanyuan Jiang, Dezhen Wang
Summary: Placing ring electrodes on the outer side of a capillary tube is an efficient way to ignite plasma discharge and assist in leading streamer/ionization wave propagation, heavily dependent on the electric field's characteristics. By simulating needle-to-multi-ring electrode configurations, the gradient of potential inside the dielectric tube can determine discharge intensity, streamer behaviors, and plume formation, essential for accelerating streamer propagation.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2021)
Article
Physics, Applied
Naoki Shirai, Takuma Kaneko, Yuto Takamura, Koichi Sasaki
Summary: Measuring surface tension is an effective method for real-time examination of the plasma-liquid interface. The variation in surface tension is correlated with the behavior of OH radicals in the gas phase.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Physics, Fluids & Plasmas
Kaishu Nitta, Hitoshi Muneoka, Yoshiki Shimizu, Hiromichi Kobayashi, Kazuo Terashima, Tsuyohito Ito
Summary: Atmospheric-pressure nonequilibrium plasma processing using microdroplets has garnered attention in recent years. Understanding the evaporation behavior of droplets in plasma is crucial for improving process controllability. This study investigates the evaporation of controlled inkjet droplets in atmospheric-pressure nonequilibrium argon plasma through experiments and modeling. Comparing the droplet evaporation model, which considers gas temperature, electron and ion collisions, and recombination reactions, with experimental results, it is found that droplet evaporation is enhanced in high-density plasma with electron and ion densities exceeding 10(19) m(-3) compared to non-ionized gaseous environments at gas temperatures under 1000 K.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Jacob Manzi, Ariel E. E. Weltner, Tony Varghese, Nicholas McKibben, Mia Busuladzic-Begic, David Estrada, Harish Subbaraman
Summary: This paper demonstrates the use of plasma-jet printing (PJP) to deposit thermoelectric nanoflakes onto flexible substrates at room temperature, with substantial improvements in material adhesion and flexibility observed. The printed films exhibit electrical conductivity of 2.5 x 10(3) S m(-1) and a power factor of 70 mu W m(-1) K-2 at room temperature. This advancement in plasma jet printing promotes not only the development of energy harvesting but also large-scale flexible electronics and sensors for space and commercial applications.
Article
Physics, Multidisciplinary
R. H. H. Scott, K. Glize, L. Antonelli, M. Khan, W. Theobald, M. Wei, R. Betti, C. Stoeckl, A. G. Seaton, T. D. Arber, D. Barlow, T. Goffrey, K. Bennett, W. Garbett, S. Atzeni, A. Casner, D. Batani, C. Li, N. Woolsey
Summary: The study used a subignition scale laser and a shallow-cone target to investigate laser-plasma interactions, finding that convective stimulated Raman scatter was the dominant instability under certain conditions. Experimental evidence of two plasmon decay was only observed when the density scale length was reduced. The study also found that hot electrons had electron temperatures between 35 and 45 keV, with laser energy-coupling to hot electrons at 1%-2.5%.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Abd H. Babikir, Mihiri G. M. Ekanayake, Olawale Oloye, James D. Riches, Kostya (Ken) Ostrikov, Anthony P. O'Mullane
Summary: This study reports a method for rapidly converting CO2 into solid carbon using dispersed liquid metal Ga and dielectric barrier discharge (DBD) plasma. The research found that highly dispersed sub-nano-sized carbon particles containing oxygen functional groups were formed after the plasma treatment. Further analysis demonstrated that plasma electrons activate CO2 molecules, while plasma-generated oxygen vacancies on the catalyst surface help dissociate CO2 into solid carbon. This work opens a new approach for synthesizing highly dispersed sub-nano-sized carbon materials suitable for various applications such as adsorption, heterogeneous catalysis, and energy conversion.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Physics, Applied
Yusuke Nakagawa, Tatsuki Yoshii, Fumiyoshi Tochikubo
Summary: In this study, ground state atomic nitrogen was analyzed using two-photon absorption laser-induced fluorescence in sub-atmospheric pressure nitrogen pulsed barrier discharge. The results showed that reducing the pressure enhanced the production of atomic nitrogen during afterglow and extended the lifetime of atomic nitrogen near the anode. This improved the chemical activity near the anode.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Fluids & Plasmas
Joshua Morsell, Duncan Trosan, Katharina Stapelmann, Steven Shannon
Summary: The study of plasma surface ionization waves (SIWs) has mainly focused on planar surfaces and periodic structures in recent years. However, in practical applications, substrates often have non-planar morphology and targets may have heterogeneous composition, which fall under the category of complex interfaces. This study investigates plasma SIWs incident on a complex target consisting of a single channel cut into glass slides. The velocities of the SIWs in the channel portion and the radially propagating portion were tracked. The results show that the surface wave velocities are primarily affected by pulse energy rather than channel geometry. The study also discusses the morphology of surface waves and their impact on applications, and introduces a simple model to understand the mechanisms behind SIW escape from channels.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2023)
Article
Physics, Fluids & Plasmas
Tymon B. Nieduzak, Visal Veng, Cameron N. Prees, Valentin D. Boutrouche, Juan Pablo Trelles
Summary: This study presents a reactor that utilizes plasma activated water produced through renewable energy to synthesize nitrate fertilizer. Experimental results show that the nitrate production rate varies linearly with plasma volume. The design and fabrication methods presented can be adapted to other reactors, enabling low environmental and economic cost nitrogen fertilizer production on demand.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Julian Schneemann, Karl-Christian Schaefer, Bernhard Spengler, Sven Heiles
Summary: This study presents a module that enhances the signal intensity of nonpolar compounds in MSI experiments. The module allows for the analysis of mouse tissue and caterpillar tissue, providing insight into the spatial distribution of nonpolar analytes.
ANALYTICAL CHEMISTRY
(2022)
Article
Physics, Applied
V Mazieres, O. Pascal, R. Pascaud, L. Liard, S. Dap, R. Clergereaux, J-P Boeuf
Summary: This paper discusses the innovative space-time plasma-steering source for controlling plasmas in overmoded cavities, introducing the key plasma-steering criterion and highlighting the importance of plasma density on plasma control capabilities.
PHYSICAL REVIEW APPLIED
(2021)
Article
Engineering, Chemical
Mohammad Kazemi, Hamed Taghvaei
Summary: Efficient and economical methods for water recovery are in high demand due to recent water crisis caused by growing water demands. Cold atmospheric plasma technology has attracted attention for its chemical and physical effects in removing contaminants from wastewater. Experimental results with multi array dielectric barrier discharge (MADBD) plasma gas diffuser show that ozone (O-3) plays a key role in decolorization of water, with high efficiency and decolorization rate.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Physics, Applied
Juliusz Kruszelnicki, Runchu Ma, Mark J. Kushner
Summary: The study investigates the propagation of atmospheric pressure plasmas through porous dielectric materials, revealing the significant role of photoionization and the impact of pore-chain orientation with respect to the applied electric field on plasma generation and distribution of reactive species to pore surfaces.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Physics, Applied
Kazuki Takeda, Shota Sasaki, Wencheng Luo, Keisuke Takashima, Toshiro Kaneko
Summary: The development of a high-speed liquid flow interface in helium plasma has enabled the observation of rapid decay of OH radicals generated by atmospheric-pressure plasmas, providing insights into their surface localization and inhomogeneous distribution. This experimental breakthrough offers a better understanding of reaction processes involving short-lived reactive species in the liquid phase.
APPLIED PHYSICS EXPRESS
(2021)
Article
Chemistry, Multidisciplinary
Elias Abedelnour, Stephanie Ognier, Mengxue Zhang, Laurent Schio, Olivier Venier, Janine Cossy, Michael Tatoulian
Summary: The direct N-acylation of amines by esters in a microreactor using argon plasma is presented, resulting in high yields of amides.
CHEMICAL COMMUNICATIONS
(2022)