Article
Materials Science, Coatings & Films
Hui-Yu Zhang, Shi-Jie Deng, Sen-Hui Liu, Cheng-Xin Li, Chang-Jiu Li
Summary: This paper studies the performance of the engulfment based annular coaxial powder feeding method and particle behaviors in the laminar plasma spraying process through numerical simulation and experimental analysis. The flow state of the laminar plasma jet and its interaction with the powder particles are analyzed using numerical simulation methods. The laminar plasma spray is then used to deposit coatings based on the annular coaxial powder feeding method, and the performance of this method is evaluated. The results show that powder particles can be fed into the laminar plasma jet without affecting its flow state and can be sufficiently heated. The experimental results are consistent with the numerical simulation results. The surface morphologies of the coatings suggest that vapor phase deposition and liquid phase deposition occur simultaneously during the spraying process, and the laminar plasma spray-physical vapor deposition process has the potential to be applied in atmospheric environments.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Physics, Fluids & Plasmas
Jing-Yu Sun, Xing Chen, Kai Zhao, Cheng Yuan, Xiao-Yong Lu, Fei Gao, You-Nian Wang
Summary: This study investigates the potential of radio-frequency (rf) plasma heating in enhancing ion extraction efficiency in a decaying plasma. The numerical simulations show that the application of rf power leads to a significant increase in ion extraction flux, reducing the extraction time. The increase in ion extraction flux is attributed to the enhancement of the rf electric field penetration and the elevating bulk electron temperature.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Yung-Chun Chen, Shiuh-Jen Jiang
Summary: A method based on liquid chromatography and dynamic reaction cell inductively coupled plasma mass spectrometry (DRC ICP-MS) was developed for simultaneous speciation of arsenic and mercury in fish, achieving fast and accurate separation and detection. The method showed high accuracy and reproducibility in analyzing a variety of fish samples.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Physics, Fluids & Plasmas
Shahid Rauf, D. Sydorenko, S. Jubin, W. Villafana, S. Ethier, A. Khrabrov, I Kaganovich
Summary: This article describes a 2D particle-in-cell model for an electron beam-generated plasma in argon confined by a constant applied magnetic field. The plasma is primarily produced in the path of the beam electrons and spreads out in the chamber through non-ambipolar diffusion.The electron cross-field transport is strongly influenced by the magnetic field, and the electron confinement weakens with increasing pressure.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2023)
Article
Energy & Fuels
A. S. Ed Cheng, Matthew A. Ratcliff, Robert L. McCormick
Summary: Computational modeling was used to understand the fuel-injection and fuel-impingement processes in a direct-injection spark-ignition engine using different ethanol and aromatic fuel blends. The results showed that droplet vaporization enriched the concentrations of aromatic species in the liquid phase, and ethanol-containing fuels affected droplet sizes and increased liquid-phase mass in the cylinder. Fuel impinging on lower temperature surfaces created wall films that could interact with the piston, while fuel impinging on hotter surfaces vaporized more readily and formed concentrated wall films with lower vapor pressure and aromatic compounds.
Article
Engineering, Aerospace
Giuseppe Gallo, Adriano Isoldi, Dario Del Gatto, Raffaele Savino, Amedeo Capozzoli, Claudio Curcio, Angelo Liseno
Summary: The study focuses on a particle-in-cell code developed by the authors for highly accurate plasma simulations on common computing platforms with a large number of macro-particles. The code incorporates a smart strategy and explores parallel computing on GPU to reduce computational time. Applications on Hall-effect and helicon double-layer thrusters validate the PIC numerical model and demonstrate its use for analyzing specific electric motor performance efficiently.
Review
Chemistry, Analytical
Swadesh Mandal, Susanta Lahiri
Summary: Cloud point extraction (CPE) is a greener alternative to conventional separation techniques in the field of analytical chemistry. This article provides an overview of various aspects of CPE and its recent developments, focusing on the extraction and speciation of metal ions and anionic species. The article also briefly discusses the extraction and determination of nanoparticles by CPE.
MICROCHEMICAL JOURNAL
(2022)
Article
Thermodynamics
J. Elin Vesper, Chibuikem S. Obiji, Ruud Westerwaal, Christiaan Boelsma, Sasa Kenjeres, Chris R. Kleijn
Summary: This paper analyzes important phenomena in continuous Physical Vapor Deposition processes, identifies process parameters affecting deposition rate and uniformity, and proposes a numerical model for predicting mass flow rates with higher accuracy than analytical models previously used.
APPLIED THERMAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Tao Zhang, Gilles Mariaux, Armelle Vardelle, Chang-Jiu Li
Summary: PS-PVD is a low-pressure deposition process where powder is injected into a high-enthalpy plasma jet to form a coating with specific microstructure. The study calculated the size of particles that can be evaporated in both stages of the process, finding that an argon-helium mixture is more efficient than an argon-hydrogen mixture in evaporating particles.
Article
Thermodynamics
Hyung Ju Lee, Chang Kyoung Choi, Seong Hyuk Lee
Summary: This study investigates the vapor shielding effect and evaporation characteristics of multiple droplets, considering the droplet-to-droplet distance, and suggests an evaporation rate model that considers vapor accumulation. Particle image velocimetry (PIV) is applied to visualize the internal flow of the evaporating droplets. The results show that droplet adjacency delays the lifetime of the multiple droplets and the evaporation flux is dramatically suppressed in the adjacent region.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Geosciences, Multidisciplinary
A. R. Poppe, D. A. Brain, Y. Dong, S. Xu, R. Jarvinen
Summary: Ion outflow is a significant factor contributing to atmospheric loss at Mars over geologic time. Studies have shown that regions within crustal magnetic fields on Mars' nightside may accelerate electrons into the atmosphere and enhance ionospheric escape. The presence of strong open crustal magnetic fields could lead to more than double the ionospheric escape flux compared to regions with no crustal fields, indicating their potential significant contribution to Mars' atmospheric loss.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Computer Science, Interdisciplinary Applications
Yuxi Chen, Gabor Toth, Hongyang Zhou, Xiantong Wang
Summary: The magnetohydrodynamics with embedded particle-in-cell (MHD-EPIC) model has been successfully applied to global magnetospheric simulations. However, the current restriction of a static PIC region is not always sufficient. The new PIC code, FLEKS, allows for a dynamic PIC region of any shape, improving the efficiency and accuracy of the simulation.
COMPUTER PHYSICS COMMUNICATIONS
(2023)
Article
Physics, Multidisciplinary
Lin Wei, Bo Liu, Fang-Ping Wang, Heng Zhang, Wen-Shan Duan
Summary: The study focuses on nonlinear waves in a viscous plasma confined within a finite cylinder. By averaging physical quantities and simplifying the system to a one-dimensional model, the effects of cylinder radius on damping coefficient are observed. The amplitudes of solitary waves decrease exponentially over time, with numerical and analytical results showing good agreement on the dependence of damping coefficient on cylinder radius and viscosity coefficient. The study also provides a condition for the existence of solitary waves in a bounded plasma and suggests potential applications in laboratory experiments.
Article
Environmental Sciences
Qiao Hou, Haoyang Zhou, Wei Zhang, Qing Chang, Jinlong Yang, Chaorui Xue, Shengliang Hu
Summary: The study introduces a novel approach to enhance the adsorption activity of specific metal ions in wastewater through solar-driven interfacial water evaporation. By using chemically-treated carbonized wood as the adsorption system, it shows higher adsorption performance at higher solar intensity, potentially applicable in wastewater treatment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Physics, Fluids & Plasmas
Toshisato Ono, Uwe R. Kortshagen, Christopher J. Hogan
Summary: This study used laser light scattering to investigate trapping of submicrometer metal oxide particles near the upper electrode of a CCP reactor. The trapping location moved further from the electrode with decreased reactor pressure, and particle trapping appeared to be influenced by the material dielectric constant. Further research is needed to understand how particle material properties affect forces on particles in plasma and the role of ion drag forces in trapping.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Optics
Biswajit Jana, Abhinandan Majumder, Kiran B. Thakur, Ashoka K. Das
EUROPEAN PHYSICAL JOURNAL D
(2015)
Article
Physics, Fluids & Plasmas
B. Jana, A. Majumder, P. T. Kathar, A. K. Das, V. K. Mago
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2012)
Article
Physics, Fluids & Plasmas
Srikumar Ghorui, Sunil Sahasrabudhe, Gayatri Dhamale, Nilesh Kanhe, Vikash Mathe, Sudha Bhoraskar, Ashoka Das
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2014)
Article
Chemistry, Multidisciplinary
R. Kar, N. N. Patel, S. S. Chopade, S. Mukherjee, A. K. Das, D. S. Patil
JOURNAL OF EXPERIMENTAL NANOSCIENCE
(2014)
Article
Engineering, Multidisciplinary
B. Jana, P. T. Kathar, A. Majumder, K. B. Thakur, A. K. Das
MEASUREMENT SCIENCE AND TECHNOLOGY
(2014)
Article
Physics, Fluids & Plasmas
S. Ghorui, A. K. Das
PHYSICS OF PLASMAS
(2013)
Article
Engineering, Chemical
K. C. Meher, N. Tiwari, S. Ghorui, A. K. Das
PLASMA CHEMISTRY AND PLASMA PROCESSING
(2014)
Article
Physics, Multidisciplinary
S. Ghorui, A. K. Das
PRAMANA-JOURNAL OF PHYSICS
(2013)
Article
Physics, Multidisciplinary
S. Pradhan, S. Mishra, R. Behera, N. Kawade, A. K. Das
PRAMANA-JOURNAL OF PHYSICS
(2014)
Article
Instruments & Instrumentation
B. Jana, A. Majumder, K. B. Thakur, A. K. Das
REVIEW OF SCIENTIFIC INSTRUMENTS
(2013)
Article
Instruments & Instrumentation
Namita Maiti, K. Lijeesh, U. D. Barve, Nishad Quadri, G. U. Tembhare, S. Mukherjee, K. B. Thakur, A. K. Das
REVIEW OF SCIENTIFIC INSTRUMENTS
(2013)
Proceedings Paper
Physics, Multidisciplinary
G. K. Sahu, S. Baruah, K. B. Thakur
INTERNATIONAL SYMPOSIUM ON VACUUM SCIENCE AND TECHNOLOGY AND ITS APPLICATION FOR ACCELERATORS (IVS 2012)
(2012)
Proceedings Paper
Physics, Multidisciplinary
S. Baruah, D. Bhattacharjee, R. Tiwari, G. K. Sahu, K. B. Thakur, K. C. Mittal, L. M. Gantayet
INTERNATIONAL SYMPOSIUM ON VACUUM SCIENCE AND TECHNOLOGY AND ITS APPLICATION FOR ACCELERATORS (IVS 2012)
(2012)
Article
Materials Science, Multidisciplinary
Ping Zhang, Xiujie Yue, Yeran Gao, Zhenyong Lin, Shunxiang Wang, Songting Zhang
Summary: This paper investigates the strengthening mechanism of highspeed cutting and solid particle-entrained waterjet peening (HSC-WJP) composite reinforcement on 7075-T6 aluminum alloy. The research results show that composite reinforcement can improve surface quality, reduce surface pits and roughness, and decrease the size of precipitation-free zone (PFZ) at grain boundaries.
Article
Materials Science, Multidisciplinary
Sangyoon Lee, Hwi Yoon, Sanghun Lee, Seung-min Chung, Hyungjun Kim
Summary: The wettability of metal oxides, particularly HfO2 thin films deposited via atomic layer deposition, and its correlation with surface free energy have been studied. It was found that surface oxygen species significantly affect the intrinsic hydrophilicity of HfO2 thin films, and the crystalline orientations also evolve with film thickness.
Article
Materials Science, Multidisciplinary
Changdong Yin, Yiwen Wu, Zhou Xu, Dongdong Ye, Jun Yao, Jianjun Chen, Qiang Liu, Xin Ge, Meiling Ding
Summary: This study proposed a new strategy to indirectly estimate the hydrogen diffusivity of metallic materials under tensile stress by combining the electrochemical hydrogen permeation test (EHPT), the hydrogen diffusion descriptive equation based on Fick's law, and hydrogen pre-charged tensile test. The results showed that the hydrogen permeation curve obtained was highly approximate to the theoretical trend. The hydrogen embrittlement (HE) susceptibility of the specimens increased with increasing stress.
Article
Materials Science, Multidisciplinary
Huan Luo, Wei-yi Wang, Xin Yu, Xian-jun Lei, Lang Liu, Guo-zheng Zha, Wen-long Jiang, Bin Yang, Bao-qiang Xu
Summary: Separating selenium and tellurium is a general challenge in material and non-ferrous metallurgical industries. This paper proposes a novel method that achieved efficient separation of selenium and tellurium using gas-liquid equilibrium phase diagram and valence regulation-vacuum gasification technique.
Article
Materials Science, Multidisciplinary
Fan Zhang, Rong Xin Wang, Aiqin Tian, Fangzhi Li, Jianping Liu, Hui Yang
Summary: Deposition of Pd/Pt/Au three-layer films on p-GaN under high and ultra-high vacuum conditions was studied to investigate the electrical contact properties. Linear I-V curves were observed in samples deposited under ultra-high vacuum conditions, while nonlinear I-V characteristics were obtained in samples deposited under high vacuum conditions. The study also found that the samples deposited under high vacuum conditions had higher amounts of oxygen and Pd oxide. The oxide layer had an additional influence on the electrical characteristics of the Pd/Pt/Au/p-GaN contact.
Article
Materials Science, Multidisciplinary
Hongli Liu, Chengzhe Liu, Ying Sui, Zhongxian Liu, Tiangang Zhang, Zhiqiang Zhang, Shuang Sun, Jianwei Jia
Summary: This study utilized polysiloxane and hafnium carbide to produce Si-N-C-O-Hf hybridized ceramic fibers, and obtained ceramic fibers with hemispherical particles on the surface through electrostatic spinning and pyrolysis. The ceramic fibers exhibited excellent thermal stability, oxidation resistance, and high temperature insulation.
Article
Materials Science, Multidisciplinary
M. Abaker, Nazar Elamin Ahmed, A. Saad, H. F. Khalil, E. M. M. Ibrahim, A. M. Adam
Summary: This paper systematically studied the internal structure and thermoelectric properties of In1-xGaxSb alloys prepared by melting synthesis at 1123 K. The results showed that doping with Ga in the In sites led to a significant increase in the Seebeck coefficient and power factor, while reducing the thermal conductivity. The maximum dimensionless figure of merit was observed at 403 K.
Article
Materials Science, Multidisciplinary
Fucheng Yu, Jinlong Ren, Jielin Zhang, Haiyang Chen, Xin Tian, Chenchen Feng, Cuixia Li, Jianbin Zhang, Xianxi Tang, Xiaogang Hou
Summary: An environmentally friendly ZnO@BiVO4 composite photocatalyst was prepared using in-situ self-assembly and solvothermal methods, demonstrating good photocatalytic performance. The mass ratio of BiVO4 and NCZ was found to influence the photocatalytic performance of the composite.
Article
Materials Science, Multidisciplinary
Yaoming Shao, Pingping Zheng, Tianhao Dong, Lianghuan Wei, Haifei Wu, Jianxiao Si
Summary: In this paper, Mg3Bi2 films were prepared on glass substrate using magnetron sputtering, and the phase composition and thermoelectric properties of the films were investigated with different atomic ratios. The films displayed a metastable cubic phase and high conductivity when the atomic ratio exceeded stoichiometry.
Article
Materials Science, Multidisciplinary
I. V. Uimanov, D. L. Shmelev, S. A. Barengolts
Summary: A two-dimensional axisymmetric model has been developed to study the prebreakdown processes in a cathode microprotrusion under an external electric field. The simulation results show that electrohydrodynamic instability leads to the formation of a nanometer-sized conical protrusion on the microprotrusion tip, significantly accelerating the heating process.
Article
Materials Science, Multidisciplinary
Weilun Zhang, Di Yang, Feng Gong, Yongjun Chen, Tian Chen, Zhiwen Xie, Sirui Yang
Summary: A novel Pt doping method was designed to improve the thermal stability of CrWN coating. The doping of Pt atoms effectively blocks the coherent growth of the grains and creates a significant mixing effect, resulting in a smooth surface with uniform element distribution.
Article
Materials Science, Multidisciplinary
Xiaoye Wang, Xiaoguang Yang, Wenna Du, Tao Yang
Summary: In this study, the effects of multiple growth parameters on self-catalyzed growth of InAs/GaSb axial heterostructured nanowires on Si substrate by MOCVD were investigated. It was found that the growth temperature and switching time have significant influences on the nanowire growth.
Article
Materials Science, Multidisciplinary
Weizhong Cui, Yan Zhao, Can Cui, Xing Liu, Beili Pang, Jianguang Feng, Hongzhou Dong, Liyan Yu, Lifeng Dong
Summary: This study introduces Co2+ cations into Cs2AgBiBr6 film to improve its quality, grain size, and conductivity, resulting in enhanced solar cell efficiency.
Article
Materials Science, Multidisciplinary
Jian Wang, Ke Yang, Xianming Cheng, Yalin Lu, Ganghui Wu, Yang Zhang, Yun Kan
Summary: The corrosion behavior and microstructural evolution of Sc microalloyed Al-3.2Cu-1.5Li alloys were investigated in detail. The microstructural results showed higher levels of dislocations density in the Sc microalloyed sample, which resulted in significantly refined grains and T1 precipitates. Microalloying with Sc changed the corrosion mode of the alloy and localized corrosion was found to occur preferentially at the subgrain within unrecrystallized grains with high grain stored energy.
Article
Materials Science, Multidisciplinary
Weifeng Liu, Na Liu, Kaiqiang Song, Meiqin Zeng, Zhongchen Lu
Summary: Monoclinic WO3 prepared through plasma milling exhibits higher photocatalytic activity due to its higher surface area, increased oxygen vacancies, and defects.
