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Journal articles on the topic 'Gas barrier capability'

Author: Grafiati
Published: 5 September 2021
Last updated: 29 July 2025

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1

Vaßen, Robert, Holger Kassner, Alexandra Stuke, Daniel Emil Mack, Maria Ophelia D. Jarligo, and Detlev Stöver. "Functionally Graded Thermal Barrier Coatings with Improved Reflectivity and High-Temperature Capability." Materials Science Forum 631-632 (October 2009): 73–78. http://dx.doi.org/10.4028/www.scientific.net/msf.631-632.73.

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Conventional thermal barrier coating (TBC) systems consist of a duplex structure with a metallic bondcoat and a ceramic, heat isolative topcoat. In modern TBCs the ceramic topcoat is further divided into layers with different functions. One example is the double layer system in which conventional yttria stabilized zirconia (YSZ) is used as bottom and new materials as pyrochlores or perovskites are used as topcoat layers. These systems demonstrated an improved temperature capability compared to standard YSZ. Examples of such systems will be shown. In modern gas turbines the increased temperatur
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2

Barkhatov, V. D., E. V. Zaytseva, M. V. Lisanov, and I. S. Zhukov. "Approaches to the Qualitative Assessment of the of Safety Barriers Performance at Oil and Gas Facilities." Occupational Safety in Industry 12, no. 12 (2022): 55–62. http://dx.doi.org/10.24000/0409-2961-2022-12-55-62.

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The basic concepts of the idea of safety barriers and proposals for their classification are given. The criteria for assessing the performance of safety barriers, methods for checking their performance during operation of the facility, as well as an approach to a qualitative assessment of their performance at the facility are described. Technical safety barriers mean engineering systems and equipment located at the facility and designed to implement a critical safety function. Administrative safety barriers serve to control the implementation of critical safety tasks performed by the employees
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Bianchi, Enrico, MICHELINA SOCCIO, Valentina Siracusa, Massimo Gazzano, Shanmugam Thiyagarajan, and NADIA LOTTI. "Poly(butylene 2,4-furanoate), an Added Member to the Class of Smart Furan-Based Polyesters for Sustainable Packaging: Structural Isomerism as a Key to Tune the Final Properties." ACS Sustainable Chemistry & Engineering 9, no. 35 (2021): 11937–49. https://doi.org/10.1021/acssuschemeng.1c04104.

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High-molecular-weight poly(butylene 2,4-furanoate) (2,4-PBF), an isomer of well-known poly(butylene 2,5-furanoate) (2,5-PBF), was synthesized through an eco-friendly solvent-free polycondensation process and processed in the form of an amorphous film by compression molding. Molecular characterization was carried out by NMR spectroscopy and GPC analysis, confirming the chemical structure and high polymerization degree. Thermal analyses evidenced a reduction of both glass-to-rubber transition and melting temperatures, as well as a detriment of crystallization capability, for 2,4-PBF with respect
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Derbal-Habak,, Hassina. "Alternative Materials for Performant TBCs: Short Review." Journal of Mineral and Material Science (JMMS) 4, no. 1 (2023): 1–2. http://dx.doi.org/10.54026/jmms/1051.

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Thermal Barrier Coating (TBC) is a thermal insulation, which enables the coated substrate material to work above its melting temperature. The TBCs have been used to enhance the performance of the gas turbine for aeronautic and energy applications. Yttria stabilized zirconia YSZ (ZrO2 +7-8 wt.% Y2 O3 ) is a topcoat ceramic which is applied for more than 40 years to gas turbine components. YSZ has a high toughness and a good temperature capability up to about 1200 °C, higher operating temperatures is required for enhanced efficiency of gas turbine. Alternative materials for TBC application were
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Tamagnini, Claudio, Cristina Jommi, and Fabio Cattaneo. "A model for coupled electro-hydro-mechanical processes in fine grained soils accounting for gas generation and transport." Anais da Academia Brasileira de Ciências 82, no. 1 (2010): 169–93. http://dx.doi.org/10.1590/s0001-37652010000100014.

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A theoretical and numerical model is developed for the quantitative analysis of coupled processes taking place in active waste containment systems, such as electrokinetic barriers or fences, in which alow intensity DC current is circulated across the clay barrier to move polar and non-polar contaminants. A novel feature of the proposed approach is the allowance for the presence of air in the pore space. Under unsaturated conditions, all transport coefficients involved in the electrokinetic process are strongly dependent on the degree of saturation of pore liquid. In order to assess the predict
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Winanti, W. S., T. W. Sudinda, R. Oktivia, et al. "Barrier analysis to leverage the climate change mitigation-adaptation implementation action in mangrove forest and its surrounding community villages." IOP Conference Series: Earth and Environmental Science 1201, no. 1 (2023): 012062. http://dx.doi.org/10.1088/1755-1315/1201/1/012062.

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Abstract In the Nationally Determined Contribution document (NDC), Indonesia has a target for reducing greenhouse gas emissions of 29% on its own capability and 41% with international assistance by 2030, and plans to initiate action to achieve net zero emissions by 2050 as outlined in the Long-term Strategy for Low Carbon and Climate Resilience (LTS-LCCR) 2050 document. Mangrove forest ecosystems can absorb carbon emissions 4-5 times greater than terrestrial forests, are used as one of source to achieve Indonesia’s NDC and LTS-LCCR targets. Mangrove forest is also as a barrier to coastal abras
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7

Shahbazi, Hossein, and Ehsan Alirezaei. "Characterization of Thermal Barrier Coatings Produced using a Novel Atmospheric Plasma Spray Torch." AM&P Technical Articles 183, no. 3 (2025): 38–39. https://doi.org/10.31399/asm.amp.2025-03.p038.

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Abstract This article describes the development and evaluation of a novel atmospheric plasma spray torch designed to overcome limitations in coating internal diameter surfaces. A case study demonstrates the torch's effectiveness in producing high-quality thermal barrier coatings (TBCs) for turbine components, applying NiCoCrAlY+HfSi bond coats and 8 wt% YSZ topcoats with appropriate porosity levels. Analysis results confirm that this torch delivers comparable performance to conventional torches while enabling the critical capability of operating in confined geometries, addressing a significant
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8

Wang, Jennifer M., Scott H. Robertson, Ziyi Wang, et al. "Using hyperpolarized 129Xe MRI to quantify regional gas transfer in idiopathic pulmonary fibrosis." Thorax 73, no. 1 (2017): 21–28. http://dx.doi.org/10.1136/thoraxjnl-2017-210070.

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BackgroundAssessing functional impairment, therapeutic response and disease progression in patients with idiopathic pulmonary fibrosis (IPF) continues to be challenging. Hyperpolarized 129Xe MRI can address this gap through its unique capability to image gas transfer three-dimensionally from airspaces to interstitial barrier tissues to red blood cells (RBCs). This must be validated by testing the degree to which it correlates with pulmonary function tests (PFTs) and CT scores, and its spatial distribution reflects known physiology and patterns of disease.Methods13 healthy individuals (33.6±15.
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Leyens, C., U. Schulz, K. Fritscher, M. Bartsch, M. Peters, and W. A. Kaysser. "Contemporary Materials Issues for Advanced EB-PVD Thermal Barrier Coating Systems." International Journal of Materials Research 92, no. 7 (2001): 762–72. http://dx.doi.org/10.1515/ijmr-2001-0142.

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Abstract The key issues for thermal barrier coating (TBC) development are high temperature capability and durability under thermal cyclic conditions as experienced in the hot section of gas turbines. Due to the complexity of the system and the interaction of the constituents, performance improvements require a systems approach. However, there are issues closely related to the ceramic top coating and the bond coat, respectively. Reduced thermal conductivity, sintering, and stresses within the ceramic coating are addressed in the paper as well as factors affecting failure of the TBC by spallatio
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Kaczorowski, Damien, Gouenou Girardin, and S. Chamousset. "Oxide Layers Mechanical Properties for Ni Base Alloys in HTR Environment." Materials Science Forum 595-598 (September 2008): 501–9. http://dx.doi.org/10.4028/www.scientific.net/msf.595-598.501.

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Nickel base alloys 617 and 230 are promising candidates for the Intermediate Heat eXchanger (IHX) of GenIV Very High Temperature gas cooled Reactors. The capability to maintain an oxide layer as an efficient barrier against corrosion under mechanical loading is investigated through SEM in situ tensile test. The mechanical properties of external oxide layers are so compared between the two alloys. Cracks and spallation are observed. Few differences could be observed between these two alloys when pre oxidized in impure helium.
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Gajda, D., S. Liu, and M. Lutyński. "The concept of hydrogen-methane blends storage in underground mine excavations – gas permeability of concrete." E3S Web of Conferences 266 (2021): 03007. http://dx.doi.org/10.1051/e3sconf/202126603007.

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Power–to–gas technology gives the possibility to store the excess power from renewable energy sources by converting electrical energy into gas such as eg. hydrogen. There is however a problem with accessibility of sites where pure hydrogen can be stored. Hence, the idea of blending hydrogen with methane and use underground mine excavations to increase the storage capacity, apart from salt caverns. However, hydrogen has strong capability to diffuse through different materials, including steel and some minerals. The paper proposes a concept of hydrogen/methane blends storage in abandoned undergr
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Kobayashi, Akira, G. Shanmugavelayutham, and S. Yano. "Study on Improvement of Oxide Layer and Properties of Plasma Sprayed Alumina in Thermal Barrier Coatings." Solid State Phenomena 127 (September 2007): 313–18. http://dx.doi.org/10.4028/www.scientific.net/ssp.127.313.

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Thermal barrier coatings (TBC) have been used to improve the efficiency of turbine engine by providing the capability to sustain significant temperature gradient across the coating. TBC failure occurs easily at the interface between the metallic bondcoat and topcoat. Alumina was proposed as a potential candidate as an interlayer to improve the oxidation resistance of thermal barrier coating due to its low oxygen diffusivity against the harsh environment. The mechanical properties, thermal behaviour and high temperature oxidation resistance of the coatings formed by gas tunnel type plasma spray
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13

Liu, Wenmei, Jongmin Lee, Thomas J. Schmidt, and Pierre Boillat. "Towards Improved Cold-Start Capability of PEFCs: Patterned Gas Diffusion Layers." ECS Meeting Abstracts MA2023-01, no. 38 (2023): 2253. http://dx.doi.org/10.1149/ma2023-01382253mtgabs.

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Polymer electrolyte fuel cells (PEFCs) are electrochemical energy converters with high efficiency and zero pollutant emissions. The unassisted cold-start of PEFCs at -30 °C is one of the major challenges for automotive applications due to the freezing of supercooled water generated by the cathodic oxygen reduction reaction (ORR). Once triggered by the nucleus in cathode gas diffusion layers (GDLs), ice propagates through the active area, leading to oxidant gas blockage and cold-start failure1. The cold-start capability of PEFCs can be improved by preventing ice propagation, especially in GDLs.
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14

Liu, Yuan, Kuiying Chen, Amarnath Kumar, and Prakash Patnaik. "Principles of Machine Learning and Its Application to Thermal Barrier Coatings." Coatings 13, no. 7 (2023): 1140. http://dx.doi.org/10.3390/coatings13071140.

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Artificial intelligence (AI), machine learning (ML) and deep learning (DL) along with big data (BD) management are currently viable approaches that can significantly help gas turbine components’ design and development. Optimizing microstructures of hot section components such as thermal barrier coatings (TBCs) to improve their durability has long been a challenging task in the gas turbine industry. In this paper, a literature review on ML principles and its various associated algorithms was presented first and then followed by its application to investigate thermal conductivity of TBCs. This c
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15

Lu, Xiao-Qin, Shu Qin, and Jindong Li. "Radical Scavenging Capability and Mechanism of Three Isoflavonoids Extracted from Radix Astragali: A Theoretical Study." Molecules 28, no. 13 (2023): 5039. http://dx.doi.org/10.3390/molecules28135039.

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As a valuable traditional Chinese herbal medicine, Radix Astragali has attracted much attention due to its extensive pharmacological activities. In this study, density functional theory (DFT) was used thermodynamically and kinetically in detail to predict the antioxidant activity and reaction mechanisms involved in the free radical scavenging reactions of three representative isoflavonoids (formononetin, calycosin, and calycosin-7-glucoside) extracted from Radix Astragali. Three main mechanisms, including hydrogen atom transfer (HAT), proton transfer after electron transfer (SET-PT), and seque
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Anaz Khan, Muhammed, Annakodi Vivek Anand, Muthukannan Duraiselvam, Koppula Srinivas Rao, Ramachandra Arvind Singh, and Subramanian Jayalakshmi. "Thermal Shock Resistance and Thermal Insulation Capability of Laser-Glazed Functionally Graded Lanthanum Magnesium Hexaluminate/Yttria-Stabilised Zirconia Thermal Barrier Coating." Materials 14, no. 14 (2021): 3865. http://dx.doi.org/10.3390/ma14143865.

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In this work, functionally graded lanthanum magnesium hexaluminate (LaMgAl11O19)/yttria-stabilised zirconia (YSZ) thermal barrier coating (FG-TBC), in as-sprayed and laser-glazed conditions, were investigated for their thermal shock resistance and thermal insulation properties. Results were compared with those of a dual-layered coating of LaMgAl11O19 and YSZ (DC-TBC). Thermal shock tests at 1100 °C revealed that the as-sprayed FG-TBC had improved thermal stability, i.e., higher cycle lifetime than the as-sprayed DC-TBC due to its gradient architecture, which minimised stress concentration acro
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Moser, Sean, K. Dean Edwards, Tobias Schoeffler, and Zoran Filipi. "CFD/FEA Co-Simulation Framework for Analysis of the Thermal Barrier Coating Design and Its Impact on the HD Diesel Engine Performance." Energies 14, no. 8 (2021): 2044. http://dx.doi.org/10.3390/en14082044.

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Thermal barrier coatings (TBCs) have been investigated both experimentally and through simulation for mixing controlled combustion (MCC) concepts as a method for reducing heat transfer losses and increasing cycle efficiency, but it is still a very active research area. Early studies were inconclusive, with different groups discovering obstacles to realizing the theoretical potential. Nuanced papers have shown that coating material properties, thickness, microstructure, and surface morphology/roughness all can impact the efficacy of the thermal barrier coating and must be accounted for. Adding
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Nicholls, John R., Richard G. Wellman, Remy Steenbakker, and Jörg Feist. "Self Diagnostic EB-PVD Thermal Barrier Coatings." Advances in Science and Technology 72 (October 2010): 65–74. http://dx.doi.org/10.4028/www.scientific.net/ast.72.65.

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Thermal barrier coatings (TBCs) are an enabling materials technology to improve the efficiency and durability of gas turbines and thus through such efficiency improvements offer reduce fuel usage and an associated reduction in CO2 emission. This commercial drive is pushing both aero- and industrial turbines to be lifetime dependent on TBC performance – the TBC must be “prime reliant”. However, the prediction of the durability of the TBC system has proved difficult, with lifetimes varying from sample to sample and component to component. One factor controlling this is the inability to measure a
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Vitiello, J., F. Piallat, and L. Bonnet. "Alternative deposition solution for cost reduction of TSV integration." International Symposium on Microelectronics 2017, no. 1 (2017): 000135–39. http://dx.doi.org/10.4071/isom-2017-tp52_034.

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Abstract As one of the key enabler of 3D integration, Through Silicon Via (TSV) was widely investigated but not largely adopted in the advanced packaging industry. At the present time, TSV key films, i.e. isolation, barrier and Cu seed layers, are depending on (Plasma Enhanced) Chemical Vapor Deposition ((PE)CVD) and Physical Vapor Deposition (PVD) systems in high volume manufacturing. Those deposition methods are not able to answer actual TSV needs: thick and conformal layers. They have forced engineers to compensate with other TSV fabrication steps while degrading fabrication cost. The innov
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Kirk-Bradley, Nahndi Tirrell, Tomilayo Grace Salau, Keyan Zhu Salzman, and Janie McClurkin Moore. "Atmospheric Cold Plasma (ACP) Treatment for Efficient Disinfestation of the Cowpea Weevil, Callosobruchus maculatus." Journal of the ASABE 66, no. 4 (2023): 921–27. http://dx.doi.org/10.13031/ja.15449.

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Highlights The exposure of C. maculatus to reactive gas species (RGS) from atmospheric cold plasma treatment (ACP) resulted in significant mortality at all life stages tested. Three-minute ACP treatments at voltages of 70 kV have the best insecticidal effect. The greatest impact of treatment was during the egg and young larval stages of C. maculatus. Abstract. The insecticidal capability and mechanism of high-voltage atmospheric cold plasma were studied using a dielectric barrier discharge reactor against Callosobruchus maculatus, a significant insect pest in stored grain degradation. The mort
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Chang, K. C., C. H. Hsu, H. I. Lu, et al. "Advanced anticorrosive coatings prepared from electroactive polyimide/graphene nanocomposites with synergistic effects of redox catalytic capability and gas barrier properties." Express Polymer Letters 8, no. 4 (2014): 243–55. http://dx.doi.org/10.3144/expresspolymlett.2014.28.

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Feist, J. P., P. Y. Sollazzo, S. Berthier, B. Charnley, and J. Wells. "Application of an Industrial Sensor Coating System on a Rolls-Royce Jet Engine for Temperaure Detection." Mechanical Engineering 136, no. 09 (2014): 75–83. http://dx.doi.org/10.1115/9.2014-sep-8.

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This article demonstrates the feasibility of implementing an entire sensor coating system – thermal barrier coatings – on an operating engine and successfully detecting highly precise measurements. These coatings were first used on jet engines in the 1970s and are now a common feature on power generation turbines. In the experimental design, an advanced optical probe was specifically manufactured, characterized, and implemented to enable remote detection of a moving phosphorescent spot at speeds up to 350 m/s. The comparison of the sensor coating system with a standard thermocouple measuring t
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Zhang, Jiamei, Xia Huang, Jiachang Chen, Sheng Zhou, and Junying Chen. "Polysaccharide-Based Supramolecular Hydrogel Coatings with Corrosion Barrier Zone for Protection of Patina Bronze." Polymers 15, no. 16 (2023): 3357. http://dx.doi.org/10.3390/polym15163357.

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Protective coatings for bronze relics should adhere to the basic principles of cultural relic preservation, such as not altering the color and appearance of the artifacts, and being moderately combined with the artifacts to resist erosion due to external environments (such as water and gas). This paper presents the development of a physically crosslinked supramolecular hydrogel produced from guanidinium-based chitosan (GC). The hydrogel exhibits the excellent adsorption protection of bronze, and the addition of clay enhances the water barrier properties of the chitosan film. The supramolecular
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An, Zifeng, Konrad Grala, Aakanx Panchal, and Kunjan Trivedi. "Investigating graphene oxide permeable reactive barriers for filtering groundwater contaminated from hydraulic fracturing." University of Ottawa Science Undergraduate Research Journal 1 (August 23, 2018): 55. http://dx.doi.org/10.18192/osurj.v1i1.3705.

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Hydraulic fracturing, or fracking, is a method of natural gas extraction which involves pumping a brine solution into the ground to create a fracture that will allow natural gas to rise. One of the major concerns surrounding this method of natural gas extraction is that wastewater enters the groundwater supply, thereby contaminating it. This wastewater contains toxic materials such as heavy metal ions, radionuclides and other salts and organic compounds in high concentrations. Some of these materials are carcinogenic and thus a concern to human life and the environment. The current solution in
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Hsu, Chia-Hsun, Yang-Shih Lin, Hsin-Yu Wu, et al. "Deposition of Silicon-Based Stacked Layers for Flexible Encapsulation of Organic Light Emitting Diodes." Nanomaterials 9, no. 7 (2019): 1053. http://dx.doi.org/10.3390/nano9071053.

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In this study, inorganic silicon oxide (SiOx)/organic silicon (SiCxHy) stacked layers were deposited by a radio frequency inductively coupled plasma chemical vapor deposition system as a gas diffusion barrier for organic light-emitting diodes (OLEDs). The effects of thicknesses of SiOx and SiCxHy layers on the water vapor transmission rate (WVTR) and residual stress were investigated to evaluate the encapsulation capability. The experimental results showed that the lowest WVTR and residual stress were obtained when the thicknesses of SiOx and SiCxHy were 300 and 30 nm, respectively. Finally, d
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Deng, Xiaoxu. "The de-icing principle of electrode-to-ice streamers and deep learning-based calculation of ice-melting rate." Journal of Physics: Conference Series 2835, no. 1 (2024): 012013. http://dx.doi.org/10.1088/1742-6596/2835/1/012013.

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Abstract Within the aviation field, dielectric barrier discharge (DBD) plasma stands as a method utilized for de-icing purposes. This paper assesses the ice-melting capability of electrode-to-ice streamers. The methodology employed is predicated upon the phenomenon termed “thermal explosion of the vibrational reservoir”, which manifests an exponential non-linear increase in gas temperature due to the plasma’s thermal instability mechanism. Utilizing a DBD plasma actuator could provide a more comprehensive understanding of the temperature near the streamers. The ice-melting rates are evaluated
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Jawed, Rehan, Abdulaziz Bazaid, Alexey Malyazin, and Ehsan Murad. "Application of Advanced Sectorial Electromagnetic Scanning Addressing Well Integrity Challenges." Petrophysics – The SPWLA Journal of Formation Evaluation and Reservoir Description 66, no. 4 (2025): 578–93. https://doi.org/10.30632/pjv66n4-2025a4.

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This paper explores the application of the sectorial electromagnetic scanning tool in diagnosing well integrity issues, such as metal loss and deformation in gas wells. The tool enhances the detection of defects in the well’s first barrier (the innermost pipe that the scanning tool directly evaluates), providing azimuthal resolution and localized measurements of wall thickness. Existing conventional electromagnetic corrosion logging methods associated with averaged circumferential measurements may overlook localized anomalies, potentially leading to underestimated integrity risks. The study in
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Curry, Nicholas, Matthias Leitner, and Karl Körner. "High-Porosity Thermal Barrier Coatings from High-Power Plasma Spray Equipment—Processing, Performance and Economics." Coatings 10, no. 10 (2020): 957. http://dx.doi.org/10.3390/coatings10100957.

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High-porosity thermal barrier coatings are utilized on gas turbine components where maximizing the coating thermal insulation capability is the primary design criteria. Though such coatings have been in industrial use for some time, manufacturing high-porosity coatings quickly and efficiently has proven challenging. With the industry demand to increase productivity and reduce waste generation, there is a drive to look at improved coating manufacturing methods. This article looks at high-porosity coatings manufactured using a high-power plasma system in comparison with a current industrial coat
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Miranda, F. S., V. K. F. Tavares, M. P. Gomes, et al. "Physicochemical Characteristics and Antimicrobial Efficacy of Plasma-Activated Water Produced by an Air-Operated Coaxial Dielectric Barrier Discharge Plasma." Water 15, no. 23 (2023): 4045. http://dx.doi.org/10.3390/w15234045.

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In this study, Plasma-Activated Water (PAW) was synthesized using a coaxial Dielectric Barrier Discharge (DBD) reactor, benefiting from the elevated capacity of air-flow-assisted DBD discharges to enhance nitrogen-based species concentration. By manipulating operational parameters, including gas flow rate, activation time, and DI water volume, we achieved significant concentrations of reactive oxygen and nitrogen species (RONS). As a result, the PAW obtained displayed pronounced physicochemical attributes: a pH of 2.06, an ORP of 275 mV, conductivity of 3 mS/cm, and TDS of 1200 mg/L. A pivotal
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Wang, Zhuocheng, Ruize Sun, Zhuo Wang, and Bo Zhang. "Reverse Blocking GaN High Electron Mobility Transistors with Stepped P-GaN Drain." ECS Journal of Solid State Science and Technology 11, no. 2 (2022): 025002. http://dx.doi.org/10.1149/2162-8777/ac5165.

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In this work, a reverse-blocking high electron mobility transistor with stepped p-type GaN drain (SPD RB-HEMT) has been proposed and studied in TCAD Sentaurus. In SPD RB-HEMT, the reverse-blocking capability is achieved by employing a stepped p-type GaN (P-GaN) layer connected with the Schottky metal drain. The stepped P-GaN layer is constituted by four P-GaN steps, and the thicknesses of the first to the fourth P-GaN step are descending from the source to the drain side. Due to the P-GaN/AlGaN/GaN structure, the conduction band of the AlGaN/GaN interface is lifted up. Therefore, the two-dimen
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Di Iorio, Giulia, Laura Paglia, Giulia Pedrizzetti, et al. "Ytterbium Disilicate/Monosilicate Multilayer Environmental Barrier Coatings: Influence of Atmospheric Plasma Spray Parameters on Composition and Microstructure." Coatings 13, no. 9 (2023): 1602. http://dx.doi.org/10.3390/coatings13091602.

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SiC/SiC ceramic matrix composites (SiCf/SiC CMCs) are regarded as the new materials for the hot-section components of aircraft gas turbine engines, since they have one-third of the density of metallic superalloys, a higher temperature capability, good mechanical strength, and excellent thermal shock resistance. However, high-temperature water-vapor-rich combustion gases can induce severe surface recession phenomena in SiC/SiC leading to component failure. For this reason, it is necessary to design protective coatings, i.e., environmental barrier coatings (EBCs), able to protect the SiC/SiC sur
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Cocking, J. L., J. A. Sprague, and J. R. Reed. "The effects of ion-implanted Ce and V on transient oxidation of NiCrAl." Proceedings, annual meeting, Electron Microscopy Society of America 45 (August 1987): 228–29. http://dx.doi.org/10.1017/s0424820100126044.

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Plasma-sprayed thermal barrier coating systems are receiving considerable attention because of their potential to optimise the capability of gas turbine engines operating in severe thermal or corrosive environments. The coating system generally consists of a metallic bond coat and a ceramic top coat. The ceramic layer in the system is usually not fully dense. One of the critical areas which must be considered in the use of such coatings is the problem of delamination of the ceramic layer as a result of stresses generated by oxidation of the bond coat. Part of the present program is to examine
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Guidotti, Giulia, Michelina Soccio, Massimo Gazzano, Valentina Siracusa, and Nadia Lotti. "New Random Aromatic/Aliphatic Copolymers of 2,5-Furandicarboxylic and Camphoric Acids with Tunable Mechanical Properties and Exceptional Gas Barrier Capability for Sustainable Mono-Layered Food Packaging." Molecules 28, no. 10 (2023): 4056. http://dx.doi.org/10.3390/molecules28104056.

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High molecular weight, fully biobased random copolymers of 2,5-furandicarboxylic acid (2,5-FDCA) containing different amounts of (1R, 3S)-(+)-Camphoric Acid (CA) have been successfully synthesized by two-stage melt polycondensation and compression molding in the form of films. The synthesized copolyesters have been first subjected to molecular characterization by nuclear magnetic resonance spectroscopy and gel-permeation chromatography. Afterward, the samples have been characterized from a thermal and structural point of view by means of differential scanning calorimetry, thermogravimetric ana
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Huang, Hsiu-Ying, Tsao-Cheng Huang, Tzu-Chun Yeh, et al. "Advanced anticorrosive materials prepared from amine-capped aniline trimer-based electroactive polyimide-clay nanocomposite materials with synergistic effects of redox catalytic capability and gas barrier properties." Polymer 52, no. 11 (2011): 2391–400. http://dx.doi.org/10.1016/j.polymer.2011.03.030.

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POPESCU, Paul Alexandru, Vlad Ioan POPA, Amalia Carmen MITELUT, Elisabeta Elena POPA, Mihaela Cristina DRAGHICI, and Mona Elena POPA. "State of the Art on Functional Coatings for Applications in The Agri-Food Industry." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Food Science and Technology 78, no. 2 (2021): 1. http://dx.doi.org/10.15835/buasvmcn-fst:2021.0022.

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Nowadays, consumer’s awareness regarding edible and functional coatings used in the food industry is increasing because of their novel approach on prolonging the shelf life of agri-food products that during storage, are subjected to a loss of quality attributes, which inevitably contributes to food waste. In order to combat this problem, functional coatings and edible films can be used because of their capability to extend the shelf life of food products by providing gas and water barrier properties and delaying microbial spoilage. The aim of this study is to review the literature and outline
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36

Lin, Jian-Shian, Ming-Hua Chung, Chen-Ming Chen, et al. "Microwave-assisted synthesis of organic/inorganic hybrid composites with gas barrier and heat-dissipating capability and their application for the encapsulation of top-emitting organic light emitting diodes (TEOLEDs)." Current Applied Physics 10, no. 5 (2010): 1331–35. http://dx.doi.org/10.1016/j.cap.2010.04.003.

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37

Bruckhuisen, Jonas, Sathapana Chawananon, Isabelle Kleiner, et al. "Millimeter-Wave Spectroscopy of Methylfuran Isomers: Local vs. Global Treatments of the Internal Rotation." Molecules 27, no. 11 (2022): 3591. http://dx.doi.org/10.3390/molecules27113591.

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Methylfurans are methylated aromatic heterocyclic volatile organic compounds and primary or secondary pollutants in the atmosphere due to their capability to form secondary organic aerosols in presence of atmospheric oxidants. There is therefore a significant interest to monitor these molecules in the gas phase. High resolution spectroscopic studies of methylated furan compounds are generally limited to pure rotational spectroscopy in the vibrational ground state. This lack of results might be explained by the difficulties arisen from the internal rotation of the methyl group inducing non-triv
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38

T T, Zhang, Du W, Wen K R, Lv Y Q, and Xiao Y X. "Research advances in Ga2O3-based solar-blind UV detectors." Journal of Physics: Conference Series 2956, no. 1 (2025): 012044. https://doi.org/10.1088/1742-6596/2956/1/012044.

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Abstract During the past decades, Ga2O3 has attracted intensive research interests as an ultra-wide-bandgap semiconductor due to its unique characteristics. Ga2O3 devices such as solar-blind ultraviolet photodetectors, power electronics, and gas sensors have been demonstrated. Recently, there has been growing attention toward developing Ga2O3-based solar-blind ultraviolet photodetectors, which is mainly ascribed to the all-weather capability and high signal-to-noise ratio. In this paper, we introduce the growth methods of Ga2O3 and summarize the relevant progress in the field of solar-blind ul
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39

Wang, Haiping, Feiyu Zhang, Xuzhi Zhao, et al. "Weak-Light-Enhanced AlGaN/GaN UV Phototransistors with a Buried p-GaN Structure." Electronics 14, no. 10 (2025): 2076. https://doi.org/10.3390/electronics14102076.

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We propose a novel ultraviolet (UV) phototransistor (PT) architecture based on an AlGaN/GaN high electron mobility transistor (HEMT) with a buried p-GaN layer. In the dark, the polarization-induced two-dimensional electron gas (2DEG) at the AlGaN/GaN heterojunction interface is depleted by the buried p-GaN and the conduction channel is closed. Under UV illumination, the depletion region shrinks to just beneath the AlGaN/GaN interface and the 2DEG recovers. The retraction distance of the depletion region during device turn-on operation is comparable to the thickness of the AlGaN barrier layer,
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40

Lowry, Bill, Andrew Louden, Robin Jerman, and Tatiana Pyatina. "Corrosion-Resistant Plug Materials for Geothermal Well Fluid Control." Materials 15, no. 19 (2022): 6703. http://dx.doi.org/10.3390/ma15196703.

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Conventional cements and plugs are challenged by corrosion in CO2-rich and extreme geothermal environments, due to the hostile chemistry and high temperatures. Thermite-based sealing and well intervention technologies are being applied in the oil and gas industry, combining the energy delivery capability of thermite materials with the sealing characteristics of low melt temperature alloys. The thermite reaction products (ceramics) and the sealing alloys used in these plugs both have very attractive corrosion properties, and their operating envelopes extend into geothermal conditions. Thermite
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41

Bhattacharya, P., A. Sen, T. K. Ghosh, N. Majumdar, and S. Mukhopadhyay. "Development of Micro-Pattern Gaseous Detectors for Nuclear Reaction Studies." Journal of Physics: Conference Series 2349, no. 1 (2022): 012017. http://dx.doi.org/10.1088/1742-6596/2349/1/012017.

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One of the frontiers of today’s nuclear physics research is the synthesis of Super Heavy Elements (SHE). Fusion-fission dynamics, namely the competition between quasi fission and fusion is one of the key challenges to optimize the SHE. To have an insight into the dynamics, one requires the study of fission fragment mass and angular distribution near barrier energies for heavy-ion induced fission reactions. Recent successful installation of linear accelerators in India offers a unique opportunity to study the dynamics of nuclear reactions and formation process of SHE. For the effective utilizat
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42

Manzel, Tobias, Carolin Podlech, Georg Grathoff, Stephan Kaufhold, and Laurence N. Warr. "In Situ Measurements of the Hydration Behavior of Compacted Milos (SD80) Bentonite by Wet-Cell X-ray Diffraction in an Opalinus Clay Pore Water and a Diluted Cap Rock Brine." Minerals 11, no. 10 (2021): 1082. http://dx.doi.org/10.3390/min11101082.

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Compacted bentonite is currently being considered as a suitable backfill material for sealing underground repositories for radioactive waste as part of a multi-barrier concept. Although showing favorable properties for this purpose (swelling capability, low permeability, and high adsorption capacity), the best choice of material remains unclear. The goal of this study was to examine and compare the hydration behavior of a Milos (Greek) Ca-bentonite sample (SD80) in two types of simulated ground water: (i) Opalinus clay pore water, and (ii) a diluted saline cap rock brine using a confined volum
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43

Strömberg, Bo, Elena Calota, Jinsong Liu, and Michael Egan. "Assessment of canister degradation for the encapsulation of spent nuclear fuel: Key research issues encountered in recent regulatory reviews and government decision making in Sweden." Advances in Geosciences 62 (October 27, 2023): 31–39. http://dx.doi.org/10.5194/adgeo-62-31-2023.

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Abstract. Regulatory review of a licence application for construction and operation of a geological repository for radioactive waste should not only be based on information provided by the applicant but also on viewpoints brought up by stakeholders and decision makers. In the Swedish Radiation Safety Authority's (SSM) licensing review of a spent fuel repository at the Forsmark site, the main concerns brought up in court hearings, from national consultations and by the Swedish government were focused around the long-term protective capacity of the copper canisters with cast iron inserts. The mo
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Dawicka, Natalia, Beata Kurc, Xymena Gross, Jakub Tomasz, Katarzyna Siwińska-Ciesielczyk, and Agnieszka Kołodziejczak-Radzimska. "Analysis of the Strength of Polyamide Used for High Pressure Transmission of Hydrogen on the Example of Reinforced Plastic Hoses." Materials 18, no. 7 (2025): 1402. https://doi.org/10.3390/ma18071402.

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The purpose of this study is to evaluate the strength of polyamide utilized in high pressure hydrogen transmission, exemplified by reinforced plastic hoses. The research encompasses a comprehensive investigation of materials employed in hydrogen infrastructure, focusing on their barrier and mechanical properties. It addresses challenges associated with hydrogen storage and transport, presenting various types of tanks and hoses commonly used in the industry and detailing the materials used in their construction, such as metals and polymers. Two materials were analyzed in the study; one new mate
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45

Getie, Elias Mandefro, and Yosef Berhan Jember. "Potential Assessment and Performance Evaluation of a Floating Solar Photovoltaic on the Great Ethiopian Renaissance Dam." International Journal of Photoenergy 2022 (June 2, 2022): 1–12. http://dx.doi.org/10.1155/2022/6964984.

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The demand for electricity has increased rapidly in Ethiopia. Renewable energy sources such as solar PV are being used to respond to the power demand and cover a small percentage of the country’s energy need. However, in Ethiopia, where the majority of the land is utilized for agriculture, the land required to generate solar PV power in a large scale is a significant barrier. Big dams, such as Great Ethiopia’s Renaissance Dam, can be used for a solar floating system to eliminate the need for land and transmission infrastructure. Due to its wider area covered by the reservoir, which is about 1,
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46

Shimpalee, Sirivatch. "(Invited) Numerical Simulation Approaches for Understanding Transports Behavior inside Polymer Electrolyte Membrane Fuel Cells." ECS Meeting Abstracts MA2022-02, no. 28 (2022): 1070. http://dx.doi.org/10.1149/ma2022-02281070mtgabs.

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Augmentation of polymer electrolyte membrane (PEM) fuel cell (FC) performance at high current densities, particularly under automotive application, is important to improve the overall power density and to reduce the cost of PEMFC systems. Primarily, the fundamental non-linearity of the equations governing PEMFC performance on a three-dimensional model necessitates iterative solutions. As of now, mass transport over-potential is a major barrier to achieving high performance at a high current density. Experimental investigations of oxygen transport in particular are limited by an inability to re
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Yan, Dayun, Qihui Wang, Xiaoliang Yao, Alisa Malyavko, and Michael Keidar. "Anti-Melanoma Capability of Contactless Cold Atmospheric Plasma Treatment." International Journal of Molecular Sciences 22, no. 21 (2021): 11728. http://dx.doi.org/10.3390/ijms222111728.

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In this study, we demonstrated that the widely used cold atmospheric plasma (CAP) jet could significantly inhibit the growth of melanoma cells using a contactless treatment method, The flow rate of helium gas was a key operational parameter to modulate electromagnetic (EM) effect on melanoma cells. Metal sheets with different sizes could be used as a strategy to control the strength of EM effect. More attractive, the EM effect from CAP could penetrate glass/polystyrene barriers as thick as 7 mm. All these discoveries presented the profound non-invasive nature of a physically based CAP treatmen
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Obenlüneschloß, Jorit, Jean-Pierre Glauber, Jan-Lucas Wree, and Anjana Devi. "High Surface Area MoS2 and WS2 As Active HER Catalysts." ECS Meeting Abstracts MA2023-02, no. 16 (2023): 1158. http://dx.doi.org/10.1149/ma2023-02161158mtgabs.

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The ever-increasing demand for clean energy necessitates a widespread adoption of clean energy carriers, namely green hydrogen. However, its production via electrolysis remains expensive. To achieve the needed drop in production cost, efficient catalyst materials are sought after to overcome the energy barrier of water splitting. Transition metal dichalcogenides (TMDCs) such as tungsten and molybdenum disulfide (WS2, MoS2) have been identified as promising catalysts because of their remarkably low Gibbs free energy for hydrogen adsorption.[1] The main challenge for these materials is the preci
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Sakka, Tetsuo, Yousuke Kinoshita, Koichi Sasaki, Yuko Yokoyama, and Naoya Nishi. "Current Potential Curves of Plasma/Aqueous Solution Interface." ECS Meeting Abstracts MA2025-01, no. 22 (2025): 1374. https://doi.org/10.1149/ma2025-01221374mtgabs.

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Atmospheric plasma can have stable contact with liquid water when the gas temperature of the plasma is sufficiently low. Such low temperature plasma can be formed by using He as a media. Not only dielectric barrier discharge plasma but also dc glow discharge plasma can have the temperature low enough not to disturb too much the interface. Plasma|water (P|W) interface can be formed if we use water as an electrode for discharge. However, we cannot control the current flowing across the P|W interface with using water as an electrode for discharge. Recently we have designed and fabricated an exper
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50

Mitwalsky, A., J. Willer, and H. Oppolzer. "HRTEM observations of schottky barrier interfaces at WSi0.4/GaAs contacts." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (1990): 726–27. http://dx.doi.org/10.1017/s0424820100176769.

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WSix is one of the most favored Schottky gate metallizations due to its self-aligned contact formation capability and high temperature resistance (∽800°C) for x ∽ 0.45. It will be demonstrated that fine details of the microstructure at this WSi0.4/GaAs Schottky interface change clearly when temperature is increased up to 800°C. These findings are relevant for explaining Schottky barrier measurements usually implying the existence of an intimate and uniform contact between metallization and semiconductor. Similar investigations have been performed on related WSix (x = 0.1 and 0.6) systems.The W
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