The Experts below are selected from a list of 165 Experts worldwide ranked by ideXlab platform
Tho Duc Nguyen - One of the best experts on this subject based on the ideXlab platform.
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Organic Spin Valves: A Review
Advanced Functional Materials, 2016Co-Authors: Jagannath Devkota, Rugang Geng, Ram Chandra Subedi, Tho Duc NguyenAbstract:Organic spintronics is an emerging and potential platform for future electronic devices. Significant progress has been made in understanding the spin injection, manipulation, and detection in organic spin valves in the past decade plus since its discovery. Studies have also been advanced to a range of materials combination of organic semiconductors and ferromagnetic electrodes for improving their performance especially at High Temperatures. In addition, there are several remarkable studies on development of the spin valves as a multifunctional device. However, the research in this field is still in its infancy and there is a need to resolve many issues which keep this field far away from applications. In this report, we review major advances in organic spin valves such as understanding the underlying physics in spin injection and transport, High Temperature Operations, and functionality. We also Highlight some of the outstanding challenges in this promising research field. Finally, we suggest an outlook on the future of organic spintronics.
Chun-lang Yeh - One of the best experts on this subject based on the ideXlab platform.
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Numerical study of the burner parameters on the thermal field in a sulfur recovery unit thermal reactor
MATEC Web of Conferences, 2018Co-Authors: Chun-lang YehAbstract:A sulfur recovery unit (SRU) thermal reactor is the most important equipment in a sulfur plant and is negatively affected by High Temperature Operations. In this paper, the effect of burner parameters, including the clearance of the acid gas tip and the inlet air swirler angle, on the thermal field in a SRU thermal reactor are investigated numerically, with the aim to reduce the High Temperature inside the thermal reactor and to ensure an acceptable sulfur recovery. The simulation results show that the burner with a smaller clearance of the acid gas tip produces a lower Temperature, a lower exit SO 2 mole fraction and Higher exit S 2 and H 2 S mole fractions. Among the clearancs of the acid gas tip investigated, the horizontal clearance of 152.4mm and vertical clearance of 240mm yield the lowest Temperature, exit SO 2 mole fraction and Highest exit S 2 , H 2 S mole fractions. The burner with a smaller inlet air swirler angle produces a Higher Temperature, a Higher exit SO 2 mole fraction and lower exit S 2 and H 2 S mole fractions. Among the swirler angles investigated, 60° yields the lowest Temperature, exit SO 2 mole fraction and Highest exit S 2 , H 2 S mole fractions.
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NOx Pollution Analysis for a Sulfur Recovery Unit Thermal Reactor
IOP Conference Series: Materials Science and Engineering, 2017Co-Authors: Chun-lang YehAbstract:A sulfur recovery unit (SRU) thermal reactor is the most important equipment in a sulfur plant. It is negatively affected by High Temperature Operations. In this paper, NOx emissions from the SRU thermal reactors are simulated. Both the prototype thermal reactor and its modifications, including changing fuel mass fraction, changing inlet air quantity, changing inlet oxygen mole fraction, and changing burner geometry, are analyzed to investigate their influences on NOx emissions. In respect of the fuel mass fraction, the simulation results show that the Highest NO emission occurs at a zone 1 fuel mass fraction of 0.375, around which the reactor maximum Temperature and the zone 1 average Temperature reach maximum values. Concerning the inlet air quantity, the Highest NO emission occurs when the inlet air quantity is 2.4 times the designed inlet air quantity. This is very close to the inlet air quantity at which the maximum average Temperature occurs. Regarding the inlet oxygen mole fraction, the NO emission increases as the inlet oxygen mole fraction increases. With regard to the burner geometry, the NO emission increases as the clearance of the burner acid gas tip increases. In addition, the NO emission increases as the swirling strength increases.
Liwei Lin - One of the best experts on this subject based on the ideXlab platform.
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electrospun nanofibers for sandwiched polyimide poly vinylidene fluoride polyimide separators with the thermal shutdown function
Electrochimica Acta, 2015Co-Authors: Chuan Shi, Shaohua Huang, Xiaochun Qiu, Huan Wang, Zhan Zhan, Peng Zhang, Jinbao Zhao, Daoheng Sun, Liwei LinAbstract:Abstract Nanofibers fabricated by the electrospinning process have been used to construct sandwich-type Polyimide/Poly (vinylidene fluoride)/Polyimide (PI/PVDF/PI) separators with the thermal shutdown function for lithium ion batteries. This architecture uses the good thermal stability of PI as the top and bottom structure layers. Under High Temperature Operations, the middle layer made of PVDF nanofibers can melt and form a pore-free film to shut down the battery operation. The electrolyte uptake and ionic conductivity of the PI/PVDF/PI separator are superior to those of commercial polyolefin separators at 476% and 3.46 mS cm −1 , respectively, resulting better battery performances in terms of impedance, discharge capacity and cycle life. Under High Temperature treatments above 170 °C, the self-shutdown function of the PI/PVDF/PI has been observed within 10 minutes, which could serve as the safety mechanism to defend the thermal runaway issue of lithium ion batteries. The effects of heating Temperature and different time on the morphologies of each layer and electrolyte uptake of the separator are characterized as well.
Jagannath Devkota - One of the best experts on this subject based on the ideXlab platform.
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Organic Spin Valves: A Review
Advanced Functional Materials, 2016Co-Authors: Jagannath Devkota, Rugang Geng, Ram Chandra Subedi, Tho Duc NguyenAbstract:Organic spintronics is an emerging and potential platform for future electronic devices. Significant progress has been made in understanding the spin injection, manipulation, and detection in organic spin valves in the past decade plus since its discovery. Studies have also been advanced to a range of materials combination of organic semiconductors and ferromagnetic electrodes for improving their performance especially at High Temperatures. In addition, there are several remarkable studies on development of the spin valves as a multifunctional device. However, the research in this field is still in its infancy and there is a need to resolve many issues which keep this field far away from applications. In this report, we review major advances in organic spin valves such as understanding the underlying physics in spin injection and transport, High Temperature Operations, and functionality. We also Highlight some of the outstanding challenges in this promising research field. Finally, we suggest an outlook on the future of organic spintronics.
Ram Chandra Subedi - One of the best experts on this subject based on the ideXlab platform.
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Organic Spin Valves: A Review
Advanced Functional Materials, 2016Co-Authors: Jagannath Devkota, Rugang Geng, Ram Chandra Subedi, Tho Duc NguyenAbstract:Organic spintronics is an emerging and potential platform for future electronic devices. Significant progress has been made in understanding the spin injection, manipulation, and detection in organic spin valves in the past decade plus since its discovery. Studies have also been advanced to a range of materials combination of organic semiconductors and ferromagnetic electrodes for improving their performance especially at High Temperatures. In addition, there are several remarkable studies on development of the spin valves as a multifunctional device. However, the research in this field is still in its infancy and there is a need to resolve many issues which keep this field far away from applications. In this report, we review major advances in organic spin valves such as understanding the underlying physics in spin injection and transport, High Temperature Operations, and functionality. We also Highlight some of the outstanding challenges in this promising research field. Finally, we suggest an outlook on the future of organic spintronics.