A5012304259- Semiconductor materials and devices
- Corrosion Behavior and Inhibition
- Aluminum Alloys Composites Properties
- Silicon Nanostructures and Photoluminescence
- Aluminum Alloy Microstructure Properties
- Nanowire Synthesis and Applications
- Silicon and Solar Cell Technologies
- Semiconductor Quantum Structures and Devices
- Advancements in Semiconductor Devices and Circuit Design
- Plasma Applications and Diagnostics
- Integrated Circuits and Semiconductor Failure Analysis
- Semiconductor materials and interfaces
- Metal Extraction and Bioleaching
- Analytical chemistry methods development
- Ichthyology and Marine Biology
- Calcium Carbonate Crystallization and Inhibition
- Ion-surface interactions and analysis
- Minerals Flotation and Separation Techniques
- Pickering emulsions and particle stabilization
- Advanced Welding Techniques Analysis
- Concrete Corrosion and Durability
- ZnO doping and properties
- Catalytic Processes in Materials Science
- Advanced Surface Polishing Techniques
- Ga2O3 and related materials
Korea Maritime and Ocean University
2022-2024
Yonsei University
2015-2024
Recycled hypoeutectic Al–Si–Mg alloy, an essential lightweight material, is positioned as a significant alternative to reduce energy usage and CO2 emissions in the automotive sector. Despite use of recycled aluminum, environmental pollution during aluminum production has continued increase. This study aims optimize Mg Si composition recycling-oriented alloy maximize alloying elements present scrap further emissions. Hypoeutectic alloys with different Mg/Si ratios + contents were prepared...
Gallium antimonide (GaSb) has an extremely high electron mobility and excellent lattice match with various III–V ternary quaternary compounds. In this study, the effect of wet-etching processes on GaSb (001) surface was investigated, a focus H2O2. Dilution H2O addition H2O2 in HF/H2O2/H2O, NH4OH/H2O2/H2O, HCl/H2O2/H2O mixtures produced different effects surface. The etching rate increased dilution ratio small amount mixture NH4OH/H2O2/H2O. decreased oxide thickness contact angle XPS Ga 3d Sb...
Cathodic protection is widely recognized as the most cost effective and technically appropriate corrosion prevention methodology for port, offshore structures, ships. When applying cathodic method to metal facilities in seawater, on surface of a compound calcium carbonate(<TEX>$CaCO_3$</TEX>) or magnesium hydroxide(<TEX>$Mg(OH)_2$</TEX>) films are formed by <TEX>$Ca^{2+}$</TEX> <TEX>$Mg^{2+}$</TEX> ions among many ionic components dissolving seawater. And calcareous deposit such...
Hypoeutectic Al–Si–Mg alloys with different Mg/Si ratios and Mg + Si contents were prepared to investigate their influence on the microstructure, corrosion initiation, product layer (CPL) behavior of alloys. Increasing ratio promoted 2 π -AlFeSiMg, improving sacrificial protection delaying Al dissolution. As progressed, additional Mg-based products formed, crosslinked Al- Si-based products, exhibiting a stable CPL by forming Al–O–Mg Si–O–Mg bonds. The increase in at constant yields miniature...
Scaling down of silicon-based transistors is facing various problems such as increase in the gate leakage and power consumption. As a solution to resolve those problems, III-V compound semiconductors are introduced channel material. Because have outstanding electron transport properties, they can enable downscaling [1,2]. However, introduction III–V into Si-based infrastructures manufacturing processes still many be solved. One largest removal photoresists on semiconductors. In general...
Oxidation and dissolution behavior of SiGe surface, compared to Si was investigated in a mixture HF, H2O2, CH3COOH, CH3COOOH (peracetic acid, PAA). The rates the surfaces were found be proportional PAA concentration, suggesting that surface reactions are oxidation-limited, with as predominant oxidant. Because rate significantly higher than Si, it concluded oxidized much faster surface. Surface analysis confirmed atoms on more vigorously those Additionally, solution remarkably enhanced by...
Selective oxidation and dissolution behavior of SiGe over Si is investigated using mixtures HF, H2O2, CH3COOH, CH3COOOH (peracetic acid, PAA). A much higher rate for than that observed in the PAA solution, owing to more rapid vigorous surface compared surface. Based on these findings, a novel method further increasing selective by controlling formation hydroxyl radicals solution introduced. When enhanced, selectivity significantly increase from 212 nm/min 111 793 225, respectively. The...
Hypoeutectic Al–Si–Mg alloys with different Mg/Si ratios and Mg + Si contents were prepared to investigate their influence on the microstructure, corrosion initiation, product layer (CPL) behavior of alloys. Increasing ratio promoted Mg2Si π -AlFeSiMg, improving sacrificial protection delaying Al dissolution. As progressed, additional Mg-based products formed, crosslinked Al- Si-based products, exhibiting a stable CPL by forming Al–O–Mg Si–O–Mg bonds. The increase in at constant yields...