A5100605343- Physics of Superconductivity and Magnetism
- Catalytic Processes in Materials Science
- Transition Metal Oxide Nanomaterials
- Electric Motor Design and Analysis
- Catalysis and Oxidation Reactions
- Magnetic Properties and Applications
- MXene and MAX Phase Materials
- Advanced Photocatalysis Techniques
- Antenna Design and Analysis
- Magnetic Properties and Synthesis of Ferrites
- ZnO doping and properties
- Advanced Sensor and Energy Harvesting Materials
- Supercapacitor Materials and Fabrication
- Superconductivity in MgB2 and Alloys
- Electrocatalysts for Energy Conversion
- Metamaterials and Metasurfaces Applications
- Nanoparticle-Based Drug Delivery
- Nanomaterials for catalytic reactions
- Superconducting Materials and Applications
- Plant and animal studies
- Photonic Crystals and Applications
- Gas Sensing Nanomaterials and Sensors
- Advanced Antenna and Metasurface Technologies
- Fern and Epiphyte Biology
Gyeongsang National University
2023-2025
Korea University
2024
Chung-Ang University
2024
Pohang University of Science and Technology
2005
Hyosung Corporation (South Korea)
2004-2005
Gwangju Institute of Science and Technology
2005
In this study, we propose a broadband and wide-incidence angle optically transparent metamaterial absorber (MMA) using eight-resistive-arm cells. The MMA uses soda-lime glass as the substrate indium tin oxide (ITO) conductive pattern. Leveraging these materials, proposed achieves optical transparency of over 78.06% at 550 nm. Simulation results indicate an absorption ratio exceeding 90% in 7.49-10.01 GHz band for all polarizations under normal incidence. is verified through fabrication...
Abstract Sensing the precise concentration of chemicals within a complex atmosphere stands as critical technology with far‐reaching implications in environmental, agricultural, and medical domains. While sensitivity limits are pushed down to ppb levels through diverse material tuning approaches, ensuring robust selectivity for targeted analyte gases remains challenge due absence effective methodologies. Here, band structure modulation is presented selective detection H 2 S utilizing NiWO 4...
A 1 MVA single phase high temperature superconducting (HTS) transformer was manufactured and tested. The rated voltage of primary secondary HTS are 22.9 kV 6.6 respectively. BSCCO-2223 tape used for windings transformer. In order to reduce AC loss generated in the winding, concentrically arranged winding adopted Single 4 parallel tapes were considering each current core fabricated as a shell type made laminated silicon steel plate. And GFRP cryostat with room bore also manufactured....
A photonic crystal structure with a refractive index that gradually changes in the specific direction of is demonstrated (see Figure). The colloidal was obtained by infiltration monomer and organic dopant high into opal, followed interfacial gel polymerization. resulting has varying stop-band at different positions when incident light normal to {111} crystallographic axis.
A 1 MVA single phase high temperature superconducting (HTS) transformer was fabricated and a part of experimental test for characteristics the performed. The rated voltages primary secondary HTS are 22.9 kV 6.6 respectively. BSCCO-2223 wire used windings whose shapes double pancake arranged reciprocally. Single 4 wires were considering current transformer. Four in transposed at connection between pancakes 3 times. electrical insulation transport performed 77 K using liquid nitrogen. rest is progress.
The persistent challenge of NOx selective catalytic reduction degradation in the presence SOx has remained unresolved for decades. In this study, we report a paradoxical boosted denitration performance more than 20% under environment through controlling charge state V utilizing strongly correlated electron systems (SCES) Ni1-xVxWO4. Substitutional doped at Ni site, and computed gap from DFT confirms SCES. Through manipulation strong correlation between Ni, preserves +2–3 SOx. Furthermore,...