40 Result(s)
within
Seong-** Yu
English
Characterization and Evaluation of Materials
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Article
Synthesis and photocatalytic performance of hydrothermally TiO2-coated-Sr4Al14O25:Eu2+, Dy3+ phosphor beads
The TiO2 nanoparticles were supported on as-fabricated Sr4Al14O25:Eu2+,Dy3+ long-lasting phosphor beads by hydrothermal coating for easy applications of photocatalyst such as an air purifier. Zeolite and sodium s...
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Article
Acid treatment enhances performance of beads activated carbon for formaldehyde removal
This study evaluated how acid treatment affects the ability of customized beads of activated carbon (BAC) to remove formaldehyde from air. Two different acids (hydrofluoric acid and sulfuric acid) were used to...
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Article
Modeling the Stress–Strain Curves and Dynamic Recrystallization of Nickel-Based A230 Alloy During Hot Deformation
The stress–strain curves and recrystallization behavior of materials during high-temperature deformation can generally be modeled using the Zener–Hollomon parameters expressed as a function of strain, temperat...
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Preparation of environmental-friendly N-rich chitin-derived activated carbon for the removal of formaldehyde
A conventional porous carbon is still a very promising material for the removal of gaseous pollutants because of its abundant surface functional groups and a high specific surface area. Here, we prepared an en...
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Article
Development of a pH-Responsive Polymer Based on Hyaluronic Acid Conjugated with Imidazole and Dodecylamine for Nanomedicine Delivery
Hyaluronic acid (HA) is being actively studied as a drug carrier due to its favorable properties and functional groups for chemical modification. Despite its high functionality, pKa of HA (3–4, carboxyl groups) i...
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Article
Near-Infrared Reflective Dark-Tone Bilayer System for LiDAR-Based Autonomous Vehicles
Light Detection and Ranging (LiDAR) is a representative sensor for autonomous vehicles (AVs) by recognizing surrounding objects through detecting the reflected near-infrared (NIR) light. However, this sensor h...
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Article
Influence of Co and Al on Magnetic Properties and Magnetocaloric Effect of (Ni, Co)-Mn-(Sn, Al) Alloys
This paper investigates the influence of Co and Al concentrations on the structure, magnetic properties and magnetocaloric effect of (Ni, Co)-Mn-(Sn, Al) alloy ribbons prepared by melt-spinning. X-ray diffract...
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Article
A pH-Sensitive Polymer for Cancer Targeting Prepared by One-Step Modulation of Functional Side Groups
Nanocarriers with pH-sensitive functionality are of great interest in the development of pH-dependent drug release compounds in acidic tumor microenvironments. A new polyelectrolyte block copolymer, poly[(benzyl-
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Article
Critical Exponents and Magnetocaloric Effect in La0.7Sr0.3Mn1−xTixO3 (x = 0 and 0.05) Compounds
The critical exponents and magnetocaloric properties of La0.7Sr0.3Mn1−xTixO3 with x = 0 and 0.05 have been explored via magnetic measurements. The magnetic data analyzed in the critical region by using modified A...
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Article
Critical Behavior of Ni-doped La0.7Sr0.3MnO3 Ceramics
The effect of Ni substitution on the magnetic properties and the critical behavior of La0.7Sr0.3Mn1−xNixO3 compounds, which were prepared by the solid-state reaction method has been investigated. Based on our inv...
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Article
Influence of stacking order and intermediate phase at low temperature on Cu2ZnSnS4 thin film formation for solar cell
A stacking order of a precursor is one of the important factors that affects the quality of Cu2ZnSnS4 (CZTS) thin film. Understanding of the intermediate phase formation and its reaction mechanism can contribute ...
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Article
Ferromagnetic Order of Amorphous Fe-Ni-Zr Alloy Ribbons at Magnetic Field Below 10 kOe
In this work, we have presented a detailed study on the critical behavior at a magnetic field below 10 kOe of the ferromagnetic-paramagnetic (FM-PM) phase transition in amorphous Fe90−x Ni
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Article
TiO2@SnO2@TiO2 triple-shell nanotube anode for high-performance lithium-ion batteries
TiO2@SnO2@TiO2 triple-shell nanotubes are fabricated using electrospun polyacrylonitrile (PAN) nanofiber template and plasma-enhanced atomic layer deposition (PEALD). The triple-shell nanotubes have a uniform dia...
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Article
Triboelectric charge generation by semiconducting SnO2 film grown by atomic layer deposition
Improving the energy harvesting efficiency of triboelectric generators (TEGs) requires exploring new types of materials that can be used, and understanding their properties. In this study, we have investigated...
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Article
Characterization of a triblock copolymer, poly(ethylene glycol)-polylactide-poly(ethylene glycol), with different structures for anticancer drug delivery applications
Formulation optimization from the early steps plays an important role in the success of drug delivery system development. To optimize nano-sized micelles based on poly(ethylene glycol)-b-poly(lactide)-b-poly(ethy...
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Article
Research for Brazing Materials of High-Temperature Thermoelectric Modules with CoSb3 Thermoelectric Materials
Metallic glass (MG) can be a candidate for an alternative brazing material of high-temperature thermoelectric modules, since we can expect both a lower brazing temperature and a high operating temperature for ...
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Article
Effect of the intermediate sulfide layer on the Cu2ZnSnS4-based solar cells
Cu2ZnSnS4 (CZTS) thin-film solar cells were fabricated using Cu/Sn/Zn and Cu/SnS/Zn precursors. The precursors were prepared using a magnetron-sputtering system with subsequent annealing (sulfurization) in a sulf...
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Article
Magnetoresistance Effect in La1.5Sr0.5NiO4-Doped La0.7Ca0.3MnO3 Nanocomposites
Our experimental results point out that most La1.5Sr0.5NiO4 nanoparticles were distributed at the grain boundaries and on the surfaces of the La0.7Ca0.3MnO3 nanoparticles. The nanocomposite samples exhibit a ferr...
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Article
Selenization of Cu2ZnSnS4 thin film using a Se metal-organic source for solar cell applications
The effect of selenization temperature on the properties of Cu2ZnSn(S,Se)4 (CZTSSe) films using a Se metal-organic source was investigated. The metal-organic compound di-tert-butyl-selenide (DTBSe) was used as a ...
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Article
Mitochondria-selective photodynamic tumor therapy using globular PEG nanoparticles
In this study, we report water-soluble globular poly(ethylene glycol) (gPEG) nanoparticles for targeting mitochondria and for improved photodynamic tumor therapy. Here, gPEG (prepared after all of the π-π carbon ...
