Article
Materials Science, Coatings & Films
Xinglei Cui, Zhenbo Xu, Yangyang Zhou, Xi Zhu, Sen Wang, Zhi Fang
Summary: This study demonstrates that a superhydrophobic film can be deposited on the ceramic surface under appropriate treatment conditions, and further investigates the hydrophobicity of the film.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Optics
D. Phadte, A. Upadhyay, Y. B. S. R. Prasad
Summary: Optical injection of electrons in the laser wakefield accelerator scheme has been demonstrated using PIC simulation. Parameter scans were conducted to determine the optimum values for laser polarization, colliding angle, delay, and injector pulse intensity. By utilizing a parabolic plasma channel to guide the laser pulse, a highly mono-energetic electron beam with a charge of 2.1 pC and energy of 337 MeV was obtained.
Article
Physics, Fluids & Plasmas
R. S. Dorst, D. B. Schaeffer, A. Le, J. J. Pilgram, C. G. Constantin, S. Vincena, S. K. P. Tripathi, D. Winske, D. Larson, M. Cowee, C. Niemann
Summary: The laminar coupling between a laser-produced plasma and a background magnetized plasma was investigated through experiments and simulations. The experiments utilized planar laser induced fluorescence diagnostic and magnetic flux probes to study the two-dimensional spatiotemporal evolution of the ion velocity distribution function. The simulations confirmed the observed coupling and the collisionless nature of the process.
PHYSICS OF PLASMAS
(2022)
Article
Materials Science, Coatings & Films
Ruixue Wang, Zhangchuan Xia, Xianghao Kong, Shuang Xue, Huiyan Wang
Summary: In this study, SiOx films were deposited on a cylindrical substrate using a radially arranged plasma jet array. The properties of the deposited films, including surface morphology, film thickness, elemental composition, and chemical structure, were systematically studied. The effect of surface modification on insulation improvement in a gas insulated transmission line system was also investigated. The results showed that the plasma jet array deposition method could produce SiOx films with good uniformity and improved insulation performance.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Physics, Fluids & Plasmas
J. Latham, E. Belova, M. Yamada
Summary: Studying the stability of a spheromak configuration in coronal holes, it was found that line-tying stabilizes the tilt instability while elongation has a destabilizing effect. High-resolution simulations show current sheet formation at the upper surface of the spheromak, where magnetic field reconnects.
PHYSICS OF PLASMAS
(2021)
Article
Chemistry, Multidisciplinary
M. Emre Sener, Raul Quesada-Cabrera, Ivan P. Parkin, Daren J. Caruana
Summary: This study demonstrates a rapid atmospheric-pressure pulsed plasma jet method for converting TiO2 films into defective, black TiO2 with enhanced photocatalytic activity. The resulting black TiO2 films show the presence of Ti3+ states, which is responsible for the increased photocurrent. However, higher Ti3+ content leads to a decrease in photocurrent, possibly due to increased electron-hole recombination centers.
Article
Engineering, Mechanical
Zhaolong Ge, Yuanfei Ling, Jiren Tang, Yiyu Lu, Yangkai Zhang, Lei Wang, Qi Yao
Summary: The self-supercharging pulsed water jet (SSPWJ) technology has significant development potential in rock fragmentation. This method combines the principles of pulsed jet and hydraulic boosting to achieve an organic combination of pulse and supercharging. Experimental results show that the pulse pressure and frequency of SSPWJ can be controlled, allowing effective erosion of different types of rocks.
CHINESE JOURNAL OF MECHANICAL ENGINEERING
(2022)
Article
Astronomy & Astrophysics
Kamil D. Sklodowski, Shreekrishna Tripathi, Troy Carter
Summary: A laboratory plasma experiment was conducted to study the eruptive behavior of arched magnetized plasmas similar to the Sun's photosphere. The experiment observed a transient plasma jet formation under the influence of a strapping magnetic field. The jet structure erupts quickly after the formation of the arched plasma and is driven by large pressure gradients.
ASTROPHYSICAL JOURNAL
(2023)
Article
Engineering, Multidisciplinary
Keita Shimada, Ryuki Morita, Masayoshi Mizutani, Tsunemoto Kuriyagawa
Summary: Powder jet deposition (PJD) is a spray coating method that can be done under atmospheric pressure and room temperature. By applying an atmospheric-pressure plasma jet (APPJ) assistance, the deposition rate of PJD can be increased.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
R. A. Treumann, Wolfgang Baumjohann
Summary: Particle condensates in high-temperature plasmas in magnetic mirror geometries are often caused by a discrete resonance with thermal ion-acoustic background noise. This resonance disrupts bounce symmetry, temporarily trapping particles at the resonant wavelength. The relevant correlation lengths are the Debye length in the parallel direction and the ion gyroradius in the perpendicular direction.
FRONTIERS IN PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Akira Kuwahara, Yasuaki Aiba, Makoto Matsui
Summary: This study developed an analytical method for rapid analysis of solid samples by reducing translational temperature and improving atomization efficiency for identification and analysis of highly radioactive isotopes. The research found that the temperature of Sr atoms in the supersonic plasma jet decreased to approximately 85K and demonstrated a high atomization efficiency.
Article
Chemistry, Physical
Kangpyo Lee, HyukSu Han, Jeong Ho Ryu, Sukhyun Kang, Kyunghwan Jung, Young-Kwang Kim, Taeseup Song, Sungwook Mhin, Kang Min Kim
Summary: In this study, a PDMS-based TENG with ZnSnO3 (ZTO) nanostructure on surface-modified carbon nanotubes (SMCs) was prepared, showing high power density suitable for practical applications in energy harvesting and self-power systems. The TENG with 0.3 wt% ZTO-SMC exhibited significantly improved output voltage and current density compared to a pristine PDMS-based TENG. The enhanced performance was attributed to the synergetic effect of enhanced dielectric constant, press-induced polarization, and effective frictional area. This work provides scientific and technical understanding for the development of polymer-based TENGs with enhanced triboelectric performance for energy harvesting and self-powered systems.
Article
Physics, Applied
V. Yu Goryainov, M. E. Viktorov, A. V. Vodop'yanov, A. V. Voronin
Summary: The investigation analyzed the structure of a plasma jet generated by a coaxial plasma accelerator, showing that the radiation intensity oscillates with characteristic frequencies for argon and deuterium. The behavior of the discharge in the accelerator revealed the initiation of a diffuse discharge at the base of the conical insert, eventually contracting and occurring between central and external electrodes. The results can be applied to gas ionization, material irradiation, and simulation of plasma flows interacting with magnetic fields in outer space.
Article
Physics, Multidisciplinary
Jing Li, Bingying Lei, Jing Wang, Boping Xu, Shuang Ran, Yishan Wang, Tongyi Zhang, Jie Tang, Wei Zhao, Yixiang Duan
Summary: Streamer coupling theory is traditionally inefficient in engineering diffuse plasma generation, and this paper proposes an alternative method involving expanding and quenching existing filamentary discharge for cost-efficient diffuse plasma production. Possible mechanisms are summarized.
COMMUNICATIONS PHYSICS
(2021)
Article
Engineering, Chemical
Yu-Lin Kuo, Hua-Wei Chen, Ying-Sui Sun, Shu-Chuan Liao, Yu-Ming Su, Yih-Hsing Lo
Summary: This study demonstrated the controlled formation of oxygen vacancies in tetragonal zirconia particles using a nonthermal atmospheric pressure plasma jet (APPJ). Characterization analyses confirmed the presence of oxygen vacancies and their relationship with surface defects, which resulted in a decreased bandgap. This research suggests that defect engineering via the APPJ method holds promise for improving the optoelectronic and photocatalytic performance of oxide materials.
ADVANCED POWDER TECHNOLOGY
(2023)
