A5114269556- Metallurgy and Material Forming
- Aluminum Alloys Composites Properties
- Aluminum Alloy Microstructure Properties
- Advanced Welding Techniques Analysis
- Semiconductor materials and devices
- Ferroelectric and Negative Capacitance Devices
- Engineering Applied Research
- Metal Forming Simulation Techniques
- Microstructure and mechanical properties
- Gas Sensing Nanomaterials and Sensors
- Metal and Thin Film Mechanics
- Thin-Film Transistor Technologies
- Plasma Diagnostics and Applications
- Microstructure and Mechanical Properties of Steels
- Quasicrystal Structures and Properties
- Electronic Packaging and Soldering Technologies
- Railway Engineering and Dynamics
- Powder Metallurgy Techniques and Materials
- MXene and MAX Phase Materials
- Advanced Sensor and Energy Harvesting Materials
- Brake Systems and Friction Analysis
- Metal Alloys Wear and Properties
- Plasma Applications and Diagnostics
- Catalytic Processes in Materials Science
- Organic Light-Emitting Diodes Research
Korea Advanced Institute of Science and Technology
2020-2025
Hyundai Motors (South Korea)
2019-2023
Ajou University
2022
Korea Institute of Industrial Technology
2007-2020
University of Southern California
2002-2009
Kyungpook National University
2007-2009
The effects of Fe content and cooling rate on the solidification path formation behavior Al5FeSi (β) phase in Fe-containing hypoeutectic Al-Si alloys were studied based thermodynamic analysis pertinent experiments. calculations performed using Thermo-Calc program. For analyses high alloy region Al-Si-Fe ternary system, a database for was correctly updated revised by collected up-to-date references. thermodynamics-based predictions alloys, liquidus projection (including various invariant,...
Acoustic matching layer films (MLFs) were fabricated using B-stage thermosetting polymer resins with various volume fractions of alumina and tungsten powders. After making certain thickness MLFs, ultrasonic layers a simple molding process. The the can be precisely adjusted from several micrometer to hundreds micrometer, without any grinding Experimental values acoustic impedances in good agreement theoretical calculated by Devaney model. Using optimized maximum intensity fractional bandwidth...
The morphotropic phase boundary (MPB), which arises from the combination of antiferroelectric and ferroelectric phases, demonstrates highest dielectric constant ( κ ) compared to other phases. This emphasizes its potential as a leading contender for films in future dynamic random access memory (DRAM) capacitors. MPB‐based high‐ materials using hafnia have shown trade‐off between equivalent oxide thickness (EOT) leakage current density J leak when crystallization temperature increases with...
This study investigated defect formation and strain distribution in high Mg content Al-Mg alloys during normal rolling cross-rolling processes. The finite element analysis (FEA) revealed the presence of wave defects localization-induced zipper cracks cold rolling, which were confirmed by experimental results. concentration shear played a significant role crack propagation. However, influence was minimal process, exhibited relatively uniform distribution. Nonetheless, at edge center regions...
In a chemical method for cell opening of high resilience (HR) molded polyurethane (PU) foam, two types openers, the poly(ester-ether) type, PESE, having ester linkage and hydrophilic polyether segment in molecule conventional poly(propylene oxide-ethylene oxide), PPEO, were employed. The influence structure concentration opener on kinetics, stability, open content mechanical properties foam investigated. PESE-based formulation exhibited delayed reaction times good stability compared to...
Global Navigation Satellite System (GNSS) has utilized time difference of arrival (TDOA) based multilateration technique. The positioning error depends on the relative geometry between satellites and user location as well measurements error. Geometric Dilution Precision (GDOP) is a function satellite/user can be used to characterize accuracy positioning. In this work, we have considered three different scenarios (open sky, indoor, urban canyon) evaluate effect GDOP in terms position low...
The 3D NAND flash architecture has adopted the incremental step pulse program (ISPP) operation, involving repetition of (PGM) & read, with aim reducing Vth variation. However, repetitive PGM read operations degrade memory window (MW) and endurance properties charge trap (CTF) device. Thus, enhancements for MW fast speed are consistently desired. In this research, we report a high efficiency multilevel-cell CTF device using negative capacitance (NC) effect in an imprinted antiferroelectric...
Ferroelectric Field-Effect Transistors (FeFETs) attract the interest of researchers due to their capability low power and high-speed operation for computing in memory (CIM). However, challenges with poor window (MW) reliability FeFETs have triggered problems density CIM. Our study addresses these obstacles through a comprehensive approach, including materials, devices, array architecture. We successfully demonstrated robust ferroelectric properties relatively thick (~30 nm) (FE) materials....
Abstract We developed a Flat Fluorescent Lamp(FFL) with high luminance by using the same discharge mode as PDP. Our FFL has simple and unique structure where glass substrates are used dielectric layers. The panel striped line shape of 10 inch diagonal size. Xe‐Ne Xe‐He, Xe‐Ne‐He mixture gases were to generate plasma. showed maximum 8,610cd/m 2 under bias 20kHz pulse 2.9kV.