A5073051296- Diamond and Carbon-based Materials Research
- Carbon Nanotubes in Composites
- Graphene research and applications
- Metal and Thin Film Mechanics
- Thin-Film Transistor Technologies
- Microstructure and Mechanical Properties of Steels
- Electronic and Structural Properties of Oxides
- Advancements in Solid Oxide Fuel Cells
- High Entropy Alloys Studies
- Silicon and Solar Cell Technologies
- ZnO doping and properties
- Quantum Dots Synthesis And Properties
- Semiconductor materials and devices
- Gas Sensing Nanomaterials and Sensors
- Magnetic and transport properties of perovskites and related materials
- Chalcogenide Semiconductor Thin Films
- Metal Alloys Wear and Properties
- Additive Manufacturing Materials and Processes
- Advancements in Battery Materials
- Conducting polymers and applications
- TiO2 Photocatalysis and Solar Cells
- Ferroelectric and Piezoelectric Materials
- Supercapacitor Materials and Fabrication
- Microstructure and mechanical properties
- Advanced materials and composites
Daelim University College
2024
Chungbuk National University
2008-2024
Pohang University of Science and Technology
2014-2024
Pennsylvania State University
2024
Korea Advanced Institute of Science and Technology
2018-2023
Hanbat National University
2014-2023
SK Group (South Korea)
2021-2023
Hanyang University
2023
Korea Post
2022
Massachusetts Institute of Technology
2020-2021
Severe lattice distortion is a core effect in the design of multiprincipal element alloys with aim to enhance yield strength, key indicator structural engineering. Yet, strength values medium- and high-entropy investigated so far do not substantially exceed those conventional owing insufficient utilization distortion. Here it shown that simple VCoNi equiatomic medium-entropy alloy exhibits near 1 GPa good ductility, outperforming solid-solution alloys. It demonstrated wide fluctuation atomic...
Abstract Fe‐N‐C catalysts with high O 2 reduction performance are crucial for displacing Pt in low‐temperature fuel cells. However, insufficient understanding of which reaction steps catalyzed by what sites limits their progress. The nature were investigated that active toward H reduction, a key intermediate during indirect and source deactivation Catalysts comprising different relative contents FeN x C y moieties Fe particles encapsulated N‐doped carbon layers (0–100 %) show both types...
Precipitation strengthening has been the basis of physical metallurgy since more than 100 years owing to its excellent effects. This approach generally employs coherent and nano-sized precipitates, as incoherent precipitates energetically become coarse due their incompatibility with matrix provide a negligible effect or even cause brittleness. Here we propose shear band-driven dispersion semicoherent which show significant We add aluminum model CoNiV medium-entropy alloy face-centered cubic...
Demands for ultrahigh strength in structural materials have been steadily increasing response to environmental issues. Maraging alloys offer a high tensile and fracture toughness through reduction of lattice defects formation intermetallic precipitates. The semi-coherent precipitates are crucial exhibiting strength; however, they still result limited work hardening uniform ductility. Here, we demonstrate strategy involving deformable their dynamic phase transformation based on narrow...
Nb-doped anatase TiO2 nanoparticles were prepared by the sol–gel process followed a hydrothermal treatment and successfully used as photoanodes in organic dye-sensitized solar cells (DSSCs). Phase identification of samples was confirmed X-ray diffraction Raman shift spectroscopy. The electronic structure Nb doping lattice photoelectron spectroscopy energy-disperse spectroscopy, respectively. Also, conduction band edge (CB) due to Nb-doping UV-vis diffuse reflectance effect on charge...
The coatings on press hardening steel are needed to suppress high temperature oxidation and decarburization. Additional corrosion protection is provided by Zn which provide cathodic hardened parts. Due the low melting of Zn–Fe intermetallic compounds, Zn-coated PHSs susceptible LMIE during die-quenching process. In present work, mechanical properties coated PHS were evaluated in terms tensile bending properties. A deterioration room bendability, due microcrack formation propagation, was...
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To correlate the in vivo hydrogen 1 ((1)H) magnetic resonance (MR) spectroscopic features of chronic hepatitis-involved liver with histopathologic stages fibrosis.Seventy-five patients hepatitis were examined (1)H MR spectroscopy, which was performed right hepatic lobe. The peak areas glutamine and glutamate complex (Glx), phosphomonoesters (PME), glycogen glucose (Glyu), lipid measured on spectra. correlated findings at each stage hepatitis. Fifteen healthy volunteers also included as a...
Abstract Porous capsules composed of hematite, silica, and hematite–silica composites are prepared by a templated synthesis method. Polyelectrolyte multilayer‐coated particles (PEMPs) used to synthesize goethite nanocrystals the resulting goethite‐nanocrystal‐embedded PEMPs (PEMP–goethite) then as templates form porous capsules. The surface morphology area can be controlled size PEMP–goethite template, which is determined extent growth nanocrystals. By controlling area, it also possible tune...
See the commentary-article "Chasing after novel non-invasive markers to identify advanced fibrosis in NAFLD" on page 255.