A5100428040- Gold and Silver Nanoparticles Synthesis and Applications
- Semiconductor Lasers and Optical Devices
- Metal and Thin Film Mechanics
- Photonic and Optical Devices
- Biosensors and Analytical Detection
- Diamond and Carbon-based Materials Research
- Semiconductor materials and devices
- Optical Network Technologies
- Advanced biosensing and bioanalysis techniques
- Magnetic and transport properties of perovskites and related materials
- Advanced Photonic Communication Systems
- Surface Modification and Superhydrophobicity
- Advanced Fiber Laser Technologies
- Ion-surface interactions and analysis
- ZnO doping and properties
- Electronic and Structural Properties of Oxides
- Organic Electronics and Photovoltaics
- Semiconductor Quantum Structures and Devices
- Electrohydrodynamics and Fluid Dynamics
- Advanced materials and composites
- Odor and Emission Control Technologies
- Plasma Diagnostics and Applications
- Physics of Superconductivity and Magnetism
- Organic Light-Emitting Diodes Research
- Plasma Applications and Diagnostics
Korea Institute of Materials Science
2014-2024
Pohang University of Science and Technology
2013-2024
Samsung (South Korea)
2009-2024
Korea Research Institute of Chemical Technology
2021-2024
Chonnam National University
2024
Korea University of Science and Technology
2023-2024
Hanbat National University
2020-2023
Korea Advanced Institute of Science and Technology
2013-2023
Chungnam National University
2013-2023
Sunchon National University
2023
In a photovoltaic perovskite, entropy-driven structural transition enables kinetic trapping of desired phase.
Abstract Microplastics (MPs) are present not only in the environment but also drinking water, food, and consumer products. These MPs being toxic, carcinogenic, endocrine disrupting, genetic risk creators cause several diseases. Despite various approaches, development of onsite applicable, facile, quick MP detection methods is still challenging. Here, 3D‐plasmonic gold nanopocket (3D‐PGNP) nanoarchitecture formed on a paper substrate for simultaneous filtration detection. The paper‐based...
An elastic neutron scattering study has been performed on several single crystals of La$_{2-x}$Sr$_{x}$CuO$_{4}$ for {\it x} near the lower critical concentration x$_{c}$} superconductivity. % In insulating spin-glass phase ({\it = 0.04 and 0.053), previously reported one-dimensional spin modulation along orthorhombic b}-axis is confirmed. Just inside superconducting 0.06), however, two pairs incommensurate magnetic peaks are additionally observed corresponding to parallel tetragonal axes....
Neutron-scattering measurements have been performed to search for possible elastic incommensurate magnetic peaks in superconducting ${\mathrm{La}}_{2\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{CuO}}_{4}$ with $x=0.10,$ 0.12, and 0.15. The most dramatic effects are found $x=0.12;$ this case, the peak intensity first appears at onset of superconductivity ${T}_{c}(=31 \mathrm{K}).$ resolution-limited width indicates that static correlation length exceeds 200 \AA{} isotropically...
Face masks will be used to prevent pandemic recurrence and outbreaks of mutant SARS-CoV-2 strains until mass immunity is confirmed. The polypropylene (PP) filter a representative disposable mask material that traps virus-containing bioaerosols, preventing secondary transmission. In this study, copper thin film (20 nm) was deposited via vacuum coating on spunbond PP surrounding KF94 face provide additional protection lower the risk Film adhesion improved using oxygen ion beam pretreatment,...
Thin films grown via atomic layer deposition (ALD) suffer from insufficient growth rate and unreliability for temperature-sensitive electronic substrates. This study aimed to examine the characteristics dielectric strength of ALD Al2O3 at low temperatures (≤ 150 °C) potential application in flexible devices. The increased 0.9 1.1 Å/cycle with increasing temperature saturated ≥ °C, which is critical a complete oxidation reaction occurred. was also improved temperature, °C showed high...
Rapid, sensitive, simultaneous quantification of multiple biomarkers in point-of-care (POC) settings could improve the diagnosis and management sepsis, a common, potentially life-threatening condition. Compared to high-end commercial analytical systems, POC systems are often limited by low sensitivity, multiplexing capability, or throughput. Here, we report an ultrasensitive, multiplexed plasmonic sensing technology integrating chemifluorescence signal enhancement with plasmon-enhanced...
The lack of a transparent, flexible, and reliable encapsulation layer for organic-based devices makes it difficult to commercialize wearable, flexible displays. reliability sensitive water vapor oxygen must be guaranteed through an additional the luminance efficiency lifetime. Especially, one major difficulties in current future OLED applications has been absence thin-film with superior barrier performance, mechanical flexibility, water-resistant properties. In this work, we fabricated...
Research on a replacement of amorphous silicon for thin-film transistor (TFT) and large area electronics has been driven by costly vacuum processed indium-gallium-zinc oxide (IGZO). Even though widely studied, the performances still require improvement, wide number other materials have tested. While indium-zinc oxide, IGZO, indium-zinc-tin (ZTO), ZTO investigated, gallium-doped indium (IGO) not under highlight. Here, we report use simple cost effective spin-coated IGO TFT using AlO <sub...
Abstract Electromagnetic enhancement effects through localized surface plasmon resonance considerably amplify the intensity of incident light when molecules are positioned in vicinity miniscule nanogaps. The aggregation plasmonic nanoparticles synthesized using bottom‐up methods has been extensively used to generate hot spots solutions. These assist obtaining non‐periodic signals, because realization uniform nanogaps particle is difficult. Nanostructured substrates with gaps 20–100 nm have...
We studied the effect of Gd doping on structural properties solution processed, crystalline In2O3 for thin-film transistor (TFT) application. With increasing in up to 20%, material structure changes into amorphous phase, and oxygen vacancy concentration decreases from 15.4 8.4%, M-OH bonds 33.5 23.7%. The field-effect mobility doped TFTs threshold voltage shifts positive with concentration. In addition, stability processed can also be improved by As a result, optimum is found ∼5% 5% Y2O3...
A bioinspired nanoflower structure was fabricated on microneedle (MN) to utilize as a surface-enhanced Raman scattering (SERS) sensor for intradermal sensing applications. On the surface of poly (lactic-co-glycolic acid) (PLGA) MN, polydopamine (PD) coated an interlayer, and hydroxyapatite (HA) which is flower-like-structured bone mineral crystalized via bio-mineralization in simulated body fluid (SBF). Au deposited HA-coated (HA-MN) generate SERS effect. Scanning electron microscopy (SEM)...
The sensitivity and limit-of-detection (LOD) of the traditional surface-enhanced Raman spectroscopy (SERS) platform suffer from requirement precise positioning small analytes, including DNAs bacteria, into narrow hotspots. In this study, a novel SERS sensor was developed using electrochemical deposition onto metal nanopillars (ECOMPs) combined with complementary (cDNAs) for detection pathogenic bacteria. Applying redox potential to AuCl4- ions actively engineered organometallic hotspots...
To develop onsite applicable cancer diagnosis technologies, a noninvasive human biofluid detection method with high sensitivity and specificity is required, available for classifying from the normal group. Herein, three-dimensional evolutionary gold nanoarchitecture (3D-EGN) developed by forming Au nanosponge (AuS) on 96-well plate, followed decoration of nanoparticles (AuNPs) evolved nanolamination (AuNL) high-throughput urine sensing in liquid phase. The 3D-EGN exhibits not only strong...
Although plasma is a promising technology in various fields, its clinical application restricted by several limitations. A cold atmospheric (CAP) patch fabricated to help overcome hurdles, especially when treating skin diseases. This has surface dielectric barrier discharge, which generates reactive oxygen species (ROS) and nitrogen (RNS) on flexible polymer film the embedded electrode induces locally strong electric field. The effect of CAP psoriasis also evaluated. distinct characteristics...