Article
Physics, Fluids & Plasmas
Qihao Yu, Erik Lemmen, Bas Vermulst, Adriaan J. M. Mackus, Wilhelmus M. M. (Erwin) Kessels, Korneel Wijnands
Summary: This article proposes an improved equivalent electric circuit model for precise control of plasma ion energy, and introduces a parameter identification method based on electrical measurements. Experiments demonstrate the expected accuracy of the proposed model and method.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Physics, Fluids & Plasmas
P. J. Bonofiglo, M. Podesta, R. B. White, V Kiptily, V Goloborodko, N. N. Gorelenkov, M. Vallar, F. E. Cecil, C. Giroud, S. Brezinsek
Summary: An integrated energetic particle transport model has been developed in JET plasmas, which can be validated against experimental fast ion loss measurements. The model incorporates a synthetic diagnostic technique and improves computational efficiency by addressing the issue of weak loss statistics. The validation results show good agreement between the model and experimental data, providing a foundation for further validation and predictive studies.
Article
Chemistry, Multidisciplinary
Kosuke Nishio, Kohei Toh, Amelie Perron, Masato Goto, Masahiro Abo, Yuichi Shimakawa, Motonari Uesugi
Summary: This study reports a method to generate tailored functional materials in pigment-producing cells by chemically fabricating intracellular melanin. The approach exploits synthetic tyrosine derivatives to hijack the melanin biosynthesis pathway, allowing for magnetic control of specific cells.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Younghun Oh, Alexander Efremov, Junmyung Lee, Jongchan Lee, Yeonsik Choi, Kwang-Ho Kwon
Summary: This study investigated the etching and damage mechanisms of SiOC thin films treated in Ar and CF4 plasma. It was found that CF4 plasma had higher etching rates and lower reaction probability for F atoms with higher input powers. The main damage mechanism was suggested to be the destruction of Si-C bonds by ion bombardment and UV radiation.
Article
Materials Science, Multidisciplinary
Jiannan Deng, Hongxia Qi, Xinyi Liu, Xiaoyi Li, Qiunan Tong, Zhenzhong Lian, Juan Li, Jinqiu Bo, Dehou Fei, Zhou Chen, Zhan Hu
Summary: The ablation processes of Cu film using femtosecond pulse trains were studied, showing that electron multiple heating and plasma shielding mechanisms dominate at different sub-pulse intervals. Additionally, significant oscillations in depth were observed under low fluence conditions using three pulse trains.
CURRENT APPLIED PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Soon-Gil Jung, Duong Pham, Yoonseok Han, Jung Min Lee, Won Nam Kang, Chorong Kim, Sunmog Yeo, Byung-Hyuk Jun, Tuson Park
Summary: MgB2 films with degraded MgB2 (SD) surface layer from Cu ion bombardment exhibit significant improvement in field performance of critical current density (Jc) and flux pinning force density (Fp). The critical field corresponding to Jc = 10 5 A/cm2 increases from 14.8 kOe to 25 kOe when the SD layer thickness is approximately 11% of the film thickness, showing promise for large-scale practical applications.
SCRIPTA MATERIALIA
(2022)
Article
Nanoscience & Nanotechnology
Hao Du, Rui Shu, Robert Boyd, Arnaud le Febvrier, Mauricio A. Sortica, Daniel Primetzhofer, Ulf Helmersson, Per Eklund, Daniel Lundin
Summary: Energetic ion irradiation is used to control the phase formation and structure of AlCrNbTi oxide at a growth temperature of 500 degrees C. By increasing the negative substrate bias, the film structure changes from amorphous to single-phase corundum, followed by the formation of high-number-density stacking faults (or nanotwins).
SCRIPTA MATERIALIA
(2023)
Article
Physics, Applied
Sung-Won Cho, Jun-Hyeon Moon, Aixian Zhang, Chin-Wook Chung
Summary: The study shows that external discharge parameters such as applied RF power, operating pressure, and gas flow rate have a significant impact on the uniformity of ion flux. Adjusting the power to the top and bottom antennas can control the distribution of ion flux in different regions, while high pressure can result in local maximum ionization in the vicinity of the antennas, increasing ion flux near the chamber wall.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Geochemistry & Geophysics
Zhengqiang Guo, Hailong Liu, Zezhong Zheng, Xi Chen, Yan Liang
Summary: The study focuses on the increasing demand of animal husbandry in arid areas in China and introduces a novel composite multifeature deep learning method for high-precision remote sensing recognition of mountainous grassland. By combining spectral bands with extracted features, the new method shows significant improvement in accuracy compared to traditional methods.
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
(2021)
Article
Physics, Fluids & Plasmas
Ankita Bhagawati, Nilakshi Das
Summary: This study investigates the influence of the sharpness of density gradients on the generation of energetic protons in a spherical hydrogen plasma. It explores the creation of density gradients by impinging a solid density target with a secondary lower intensity pulse, and identifies different regimes of proton motion based on the density sharpness.
PHYSICS OF PLASMAS
(2022)
Article
Pediatrics
Sharath Keerthy, N. Karthik Nagesh
Summary: This study compares the differences in heart rate and saturation measurements between the wireless PO device and the standard Masimo monitor in neonatal monitoring. The results show that there is little difference between the two devices in heart rate and saturation measurements, with good agreement. Due to its small size, portability, and high accuracy, this device provides an effective solution for monitoring neonates, as well as children suspected or affected by COVID-19.
INDIAN JOURNAL OF PEDIATRICS
(2022)
Article
Green & Sustainable Science & Technology
Zhiling Guo, Zhan Zhuang, Hongjun Tan, Zhengguang Liu, Peiran Li, Zhengyuan Lin, Wen-Long Shang, Haoran Zhang, Jinyue Yan
Summary: The widespread adoption of photovoltaic technology for renewable energy requires accurate segmentation of PV panels. However, achieving efficient and precise segmentation methods is challenging. In this study, we propose GenPV, a deep learning model that enhances segmentation accuracy and generalization through data distribution analysis and PV panel characteristics. Experimental results demonstrate the superior performance of our method compared to state-of-the-art approaches, highlighting its potential as an advanced tool for PV segmentation in the renewable energy field.
Article
Radiology, Nuclear Medicine & Medical Imaging
Hideki Kojima, Masayori Ishikawa, Makoto Takigami
Summary: This study investigates the change of charge collection efficiency of ionization chambers in flattening filter free beams, and proposes a correction method to obtain chamber-independent percent depth dose profiles. The results show that using this method can reduce the deviation of percent depth dose profiles.
Article
Environmental Sciences
Gustavo Willy Nagel, Evlyn Marcia Leao de Moraes Novo, Vitor Souza Martins, Joao Vitor Campos-Silva, Claudio Clemente Faria Barbosa, Marie Paule Bonnet
Summary: River meander migration is essential to maintain biodiversity in riparian ecosystems, but it can directly impact local communities by causing land loss and changes in water resources. By utilizing remote sensing data and a water surface change detection algorithm, it is possible to accurately identify regions affected by erosion and sedimentation, as well as the location and size of residential communities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Thermodynamics
Xudong Zhang, Jie Fan, Yuan Zou, Wei Sun
Summary: This paper proposes a novel method for accurately estimating battery capacity using only a few minutes of discharging data. The method combines regression shapelets, maximum relevance minimum redundancy algorithm, and extreme gradient boosting to achieve accurate estimation with low computational burden. The proposed method is validated on the public Oxford battery dataset and outperforms existing methods in terms of data volume requirement and accuracy.
Article
Chemistry, Applied
A. Luna-Triguero, J. M. Vicent-Luna, M. J. Jansman, G. Zafeiropoulos, M. N. Tsampas, M. C. M. van de Sanden, H. N. Akse, S. Calero
Summary: This study proposes a zeolite-based separation process to obtain carbon dioxide-neutral fuels and chemicals, combining separation efficiency with low costs. By calculating the separation behavior of mixtures generated by plasmolysis of CO2, a purification process design based on multicomponent adsorption and separation in commercially available zeolites is provided, with NaX and NaY identified as the most suitable zeolites for separation under a wide range of operating conditions.
Review
Physics, Applied
A. Bieberle-Hutter, A. C. Bronneberg, K. George, M. C. M. van de Sanden
Summary: This paper discusses the application of operando attenuated total reflection Fourier-transform infrared (ATR-FTIR) spectroscopy for water splitting, focusing on opportunities, challenges, recent results, and future perspectives. Stable and robust operando ATR-FTIR measurements revealed changes in surface species during water oxidation. Combining ATR-FTIR measurements with microkinetic modeling enables identification of the reaction mechanism in water splitting and accelerates the development of tailored catalysts.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Rakesh K. Sharma, Hrishikesh Patel, Usman Mushtaq, Vasileios Kyriakou, Georgios Zafeiropoulos, Floran Peeters, Stefan Welzel, Mauritius C. M. van de Sanden, Mihalis N. Tsampas
Summary: Ammonia is an essential precursor for fertilizers and a potential carbon-free energy carrier. A sustainable method for producing ammonia from nitrogen and water using a plasma-activated proton conducting solid oxide electrolyzer has been proposed. This method achieves high ammonia production rates and Faradaic efficiencies.
ACS ENERGY LETTERS
(2021)
Article
Chemistry, Physical
Ruoyu Zhang, Gerben van Straaten, Valerio di Palma, Georgios Zafeiropoulos, Mauritius C. M. van de Sanden, Wilhelmus M. M. Kessels, Mihalis N. Tsampas, Mariadriana Creatore
Summary: This study conducts an in-depth investigation on the electrochemical activation of CoPi-based catalysts, demonstrating that the pristine chemical composition strongly influences its activity in the OER, as well as its changes after prolonged exposure to the electrolyte. The activated CoPi films show an increase in electrochemical active surface area with the number of CV cycles, while phosphorous progressively leaches out from the film.
Article
Electrochemistry
Sathiyaraj Kandhasamy, Georgios Nikiforidis, Gert Jan Jongerden, Ferdy Jongerden, Mauritius C. M. van de Sanden, Mihalis N. Tsampas
Summary: By retuning the catholyte formulation of the intermediate temperature sodium-sulfur battery, lowering the operating temperature and improving cell design, the cell performance was significantly boosted, demonstrating for the first time the practicality of the tubular IT-NaS technology at a temperature as low as 125 degrees C.
Article
Chemistry, Physical
Ilker Tezsevin, Mauritius C. M. van de Sanden, Suleyman Er
Summary: This study performed density functional theory calculations to generate oxygen vacancy formation energy data for a range of cubic perovskite materials, and calculated area-specific resistance data related to oxygen reduction reaction and oxygen ion conductivity. By screening 31 candidate perovskites, the study identified materials with properties between state-of-the-art SOFC cathode and oxygen permeation components. The research also presented an intuitive approach to estimate complex perovskite data by using simple perovskite data, aiming to boost future explorations in diverse energy applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Physics, Applied
G. Raposo, A. W. van de Steeg, E. R. Mercer, C. F. A. M. van Deursen, H. J. L. Hendrickx, W. A. Bongers, G. J. van Rooij, M. C. M. van de Sanden, F. J. J. Peeters
Summary: This study quantifies the CO flame band emission in CO2 microwave plasma and reveals a contribution of O-2 Schumann-Runge UV emission at high temperatures. Further analysis demonstrates the high energy efficiency of CO flame band emission at T < 1500K.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Physics, Fluids & Plasmas
P. Viegas, L. Vialetto, A. W. van de Steeg, A. J. Wolf, W. A. Bongers, G. J. van Rooij, M. C. M. van de Sanden, P. Diomede, F. J. J. Peeters
Summary: A method is proposed to spatially resolve discharge parameters using experimental measurements and 1D numerical simulations. The results show that radially-resolved parameters obtained numerically can explain high reactor performances in CO2 conversion.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Alex van de Steeg, Pedro Viegas, Ana Silva, Tom Butterworth, Alexander van Bavel, Joost Smits, Paola Diomede, Mauritius van de Sanden, Gerard van Rooij
Summary: This study investigates the reduction of CO2 to CO for sustainable fuel production in high-temperature microwave plasma, revealing rapid mass and energy transfer mechanisms between products and feedstock, as well as the importance of new CO2 chemistry rate coefficients. Reactor design improvements based on the identified enhancement mechanisms could potentially increase efficiency up to the newly defined thermal limit of 70%.
ACS ENERGY LETTERS
(2021)
Article
Chemistry, Physical
Georgios Zafeiropoulos, Purushothaman Varadhan, Hannah Johnson, Lars Kamphuis, Arunkuman Pandiyan, Sachin Kinge, Mauritius C. M. van de Sanden, Mihalis N. Tsampas
Summary: This study addresses the challenges of depositing narrow band gap metal-oxides on porous substrates as suitable photoelectrodes for PEM-PEC configuration, achieving a high photocurrent density with W-doped BiVO4 photoanode. The successful integration of BiVO4 into PEM-PEC reactor demonstrates solar hydrogen production from ambient air, showing promise for low-cost and large-scale solar hydrogen production.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
A. W. van de Steeg, L. Vialetto, A. F. Sovelas da Silva, P. Viegas, P. Diomede, M. C. M. van de Sanden, G. J. van Rooij
Summary: Thermalization of electron and gas temperature in CO2 microwave plasma is revealed for the first time through Thomson scattering measurements. The results contradict the prevailing understanding of increasing electron temperature causing discharge contraction. The study demonstrates that associative ionization of radicals plays a significant role in the thermalization process of the plasma, providing a basis for ab initio prediction of power concentration in plasma reactors.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Physics, Fluids & Plasmas
L. Vialetto, A. W. van de Steeg, P. Viegas, S. Longo, G. J. van Rooij, M. C. M. van de Sanden, J. van Dijk, P. Diomede
Summary: This work investigates the kinetics and transport of CO2 microwave plasmas through simulation results and experiments. The simulation results are validated against experimental measurements and the study reveals the effects of gas heating and charged species variation at different pressures.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Hanyu Ma, Rakesh K. Sharma, Stefan Welzel, Mauritius C. M. van de Sanden, Mihalis N. Tsampas, William F. Schneider
Summary: This study investigates the synergy between heterogeneous catalysts and non-thermal plasma. Through experimental evidence and reactor model construction, it is revealed that neither catalyst nor plasma alone is productive, but their combination can generate nitrogen oxides. The study provides clear evidence for the synergy between heterogeneous catalysts and non-thermal plasma, and highlights the importance of their combined use.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Applied
V. Guerra, T. Silva, N. Pinhao, O. Guaitella, C. Guerra-Garcia, F. J. J. Peeters, M. N. Tsampas, M. C. M. van de Sanden
Summary: This work discusses the potential of combining non-thermal plasmas and conducting membranes for in situ resource utilization on Mars by converting molecules from the Martian atmosphere to create necessary feedstock and base chemicals. Different plasma sources operate on different principles and mechanisms, allowing for exploration of various energy transfer pathways for CO2 dissociation. The coupling of plasmas with membranes is anticipated to have a synergistic effect for high rates of production of molecules per kilogram of instrumentation sent to space.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Usman Mushtaq, Stefan Welzel, Rakesh K. Sharma, M. C. M. van de Sanden, Mihalis N. Tsampas
Summary: A method to overcome fabrication challenges for the development of efficient and robust electrode-supported P-SOCs (protonic ceramic solid oxide cells) was discussed. The study optimized material synthesis and fabrication procedures and evaluated the performance and stability of the cells.
ACS APPLIED MATERIALS & INTERFACES
(2022)