A5100661408- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Electrospun Nanofibers in Biomedical Applications
- Conducting polymers and applications
- Advancements in Battery Materials
- Transition Metal Oxide Nanomaterials
- Quantum Dots Synthesis And Properties
- Advanced Sensor and Energy Harvesting Materials
- Gas Sensing Nanomaterials and Sensors
- 3D Printing in Biomedical Research
- Advanced Battery Materials and Technologies
- Magnetic and transport properties of perovskites and related materials
- ZnO doping and properties
- Electronic and Structural Properties of Oxides
- Advanced Battery Technologies Research
- Supercapacitor Materials and Fabrication
- Dyeing and Modifying Textile Fibers
- Bone Tissue Engineering Materials
- Color Science and Applications
- Dental Implant Techniques and Outcomes
- Nanomaterials for catalytic reactions
- Adsorption and biosorption for pollutant removal
- Orthodontics and Dentofacial Orthopedics
- Polymer Nanocomposite Synthesis and Irradiation
- dental development and anomalies
Chonnam National University
2014-2025
Yonsei University Dental Hospital
2023
Yonsei University College of Dentistry
2023
Daegu-Gyeongbuk Medical Innovation Foundation
2014-2021
Green Technology Center
2017
Seoul National University
2008-2016
Chonnam National University Hospital
2016
Gwangju University
2016
University of California, Los Angeles
2016
Korea Institute of Energy Research
2012-2015
In this study, surface-enhanced Raman spectroscopy (SERS)-encoded magnetic nanoparticles (NPs) are prepared and utilized as a multifunctional tagging material for cancer-cell targeting separation. First, silver-embedded NPs prepared, composed of an 18-nm core 16-nm-thick silica shell with silver formed on the surface. After simple aromatic compounds adsorbed NPs, they coated to provide them chemical physical stability. The resulting silica-encapsulated (M-SERS dots) produce strong SERS...
We report the growth of Ba1−xLaxSnO3 (x = 0.00, 0.005, 0.01, 0.02, and 0.04) thin films on insulating BaSnO3(001) substrate by pulsed laser deposition. The BaSnO3 substrates were grown Cu2O-CuO flux, in which molar fraction KClO4 was systematically increased to reduce electron carriers thus induce a doping induced metal-insulator transition, exhibiting resistivity increase from ∼10−3 ∼1012 Ω cm at room temperature. find that all are epitaxial, showing good in-plane lattice matching with as...
Isotropic shrinkage is critical for producing dimensionally accurate prostheses using zirconia. However, the anisotropic of 3D-printed zirconia limits its utility in clinical applications. We aimed to evaluate impact specimen axis alterations on digital light processing (DLP)-printed Cubes measuring 10 × mm3 (similar size molar crowns) and cuboids 20 mm a three-unit bridge) were manufactured DLP 3D printer. Zirconia specimens pre-sintered at 1300 °C 1400 °C. The Z-axis some was switched...
It was recently discovered that a transparent $n$-type (Ba,La)SnO${}_{3}$ system has electrical mobility as high 320 cm${}^{2}$ V${}^{\ensuremath{-}1}$ s${}^{\ensuremath{-}1}$ at room temperature and superior thermal stability up to \ensuremath{\sim}500 \ifmmode^\circ\else\textdegree\fi{}C. To understand comparatively the carrier-scattering mechanism in doped BaSnO${}_{3}$, we investigate physical properties of single crystals BaSn${}_{1\ensuremath{-}x}$Sb${}_{x}$O${}_{3}$ ($x$ $=$ 0.03,...
This report investigated the photocatalytic degradation of 2‐chlorophenol using TiO 2 nanofibers and Ag‐doped nanofibers, synthesized sol‐gel electrospinning techniques, an ultraviolet light‐emitting diode (UV‐LED) system as a UV light source. The crystallite size was smaller than that because silver retrained phase transformation not only controls but also inhibits growth anatase crystallites. activation energies for grain were estimated to be 20.84 27.01 kJ/mol, respectively. rate followed...
Porous polystyrene (PS) fibers were prepared by relative humidity control during electrospinning process. The and solvent mixing ratio strongly affect the surface morphology average diameter of electrospun PS fibers. In circumstance 30% at MC/EtOH (90/10, v/v), pores did not form on However, as increased to 60%, appeared fiber same composition solvent. comparison, (80/20, v/v) gave rather smooth When are 90/10 (v/v) 80/20 (v/v), with minimum 5,211 nm (SD = 1,986) 5,315 1,039) prepared....
The band structures and the densities of states at Fermi energy for rutile, anatase brookite phases are investigated along with structure-photocatlaytic relationship by using DFT method. Bands less dispersive in phase than rutile phase, they almost flat phase. As a result, DOS value near is highest among three types <TEX>$TiO_{2}$</TEX>, which means that numbers electrons largest brookite. calculation shows may exhibit photocatalytic efficiency <TEX>$TiO_{2}$</TEX>.
Detailed understanding of the interaction between dyes and additives aggregation behaviour dye molecules in aqueous solutions is required to develop ink‐jet ink for textiles. In present study, three acid (CI Acid Red 88, CI 13 27) containing different number sulphonate groups was investigated by means visible absorption spectroscopy. As a result, higher solubility water (the larger dyes), lower are constants dyes. For all dyes, decreased with increasing temperature, indicating exothermic...
For high solar conversion efficiency of dye-sensitized cells [DSSCs], TiO2 nanofiber [TN] and Ag-doped [ATN] have been extended to be included in films increase the amount dye loading for a higher short-circuit current. The ATN was used on affected DSSCs open circuit voltage. This process had enhanced exit molecules which were rapidly split into electrons, with stop recombination electronic process. photoelectrode-based 4.74%; it increased 6.13% after adding 5 wt.% films. electron lifetime...