A5101551426- Advanced Sensor and Energy Harvesting Materials
- ZnO doping and properties
- Dielectric materials and actuators
- Gas Sensing Nanomaterials and Sensors
- Vibration Control and Rheological Fluids
- Seismic Performance and Analysis
- Polymer crystallization and properties
- Conducting polymers and applications
- Carbon Nanotubes in Composites
- Superconducting Materials and Applications
- Diamond and Carbon-based Materials Research
- HVDC Systems and Fault Protection
- Building materials and conservation
- Mass Spectrometry Techniques and Applications
- Thin-Film Transistor Technologies
- Organic Electronics and Photovoltaics
- Scientific Measurement and Uncertainty Evaluation
- High-Voltage Power Transmission Systems
- Advanced Materials and Mechanics
- Industrial Technology and Control Systems
- Polymer Nanocomposites and Properties
- Particle accelerators and beam dynamics
- Lightning and Electromagnetic Phenomena
- Hybrid Renewable Energy Systems
- Cyclone Separators and Fluid Dynamics
Ulsan National Institute of Science and Technology
2022-2025
LG Chem (South Korea)
2006-2024
Pohang University of Science and Technology
2011-2024
Pohang Accelerator Laboratory
2016-2022
Pusan National University
2022
Seoul Women's University
2022
Kyungpook National University
2022
Kyung Hee University
2007-2021
Kumoh National Institute of Technology
2021
Gumi University
2021
Irreproducible wrinkling, characterized by randomly arranged ridges or creases on material surfaces, has significant potential for application in entity identification and anti-counterfeiting. However, active research this field is hindered because the existing wrinkling methods face challenges realizing discernible patterns applications of submillimeter-scale wavelength wrinkles are yet to be identified. Herein, we propose a strategy create unique irreproducible...
Although the Kidney Disease Quality of Life instrument (KDQOL-SFTM), which was designed to measure comprehensive quality life in patients with end stage renal disease, has been tested and widely administered many other counties, it not yet translated, validated reported for Korea. The primary purpose this study validate a Korean version KDQOL-SFTM evaluate its psychometric properties. subjects were 164 hemodialysis or continuous ambulatory peritoneal dialysis university centers In order...
Poly(vinylidene fluoride) (PVDF), a polymorphic material, has useful electro active properties such as piezo-, pyro-, and ferroelectric properties. The piezoelectric crystallization polymorph is the β-phase which an all-trans (TTTT) conformation, i.e., all of its dipoles aligned in same direction normal to chain axis. Elongational deformation was applied poly(vinylidene fluoride)(PVDF) / multiwalled carbon nanotube (MWCNT) nanocomposites. Its effect on conversion α-phase crystals into...
In recent years, there has been an increasing demand for electromagnetic interference (EMI) shielding with the development of advanced electronic devices and communication instruments because high-frequency microwaves generate undesired noise, which can affect proper operation commercial, military, scientific as well health our human body. this study, we investigated effect multiwalled carbon nanotube (MWCNT) addition to Fe–Si–Al alloy (Sendust)/polymer blend on wave absorption shielding....
The effect of shape anisotropy a magnetic particle on the performance and stability magnetorheological (MR) suspension was investigated using rotational rheometer vibrating sample magnetometer. A flaky Sendust (FS) demonstrated surprisingly high MR at low field strength because which induced rapid ascent particles' moment and, thus, suspension's yield stress. Despite its lower iron content (85%) than carbonyl (almost pure iron), exhibited stress value greater that strength. Because...
A low-energy Ar+ ion beam was used to modify the surface of a polyetheretherketone (PEEK) film. The modification reaction proceeded with or without oxygen gas injected during irradiation. functional groups modified PEEK were confirmed X-ray photoelectron spectroscopy as increasing various oxygen-containing groups. concentration varied rapidly irradiation time, reached maximum value, and then slowly decreased. morphology substantially changed by ion-beam Surface smoothening occurred so that...
We have fabricated fully patterned transparent oxide/organic hybrid transistors on glass substrates that contain In-Ga-Zn-O as the active layer and a poly(4-vinyl phenol-comethyl methacrylate) copolymer dielectric layer. These devices exhibit saturation mobility of 6.04 cm2/V s, threshold voltage value 3.53 V, subthreshold slope 360 mV/decade, an on-off ratio 1.0×109 at maximum processing temperature 200 °C. found bias stability characteristics are dependent ambient conditions, but can also...
We investigated the magnetorheological (MR) properties of carbon nanotube (CNT)-Co0.4Fe0.4Ni0.2 composite suspension to find a high-performance MR fluid with excellent stability. The composites were fabricated by chemical reduction Co0.4Fe0.4Ni0.2 on surface amine-functionalized CNTs. A synergistic effect between high aspect ratio CNTs and strong magnetic polarization led stronger performance nanocomposite particle suspension. exhibits an unexpected yield stress value that is 13 times...
Hwang-Yeon-Hae-Dok-San (TJ-15) and Ou-Ryung-San (TJ-17) are two common herbal formulas that have been used to treat atopic dermatitis (AD), especially the Dampness-Heat pattern of AD. The aim this study was determine safety efficacy TJ-15 plus TJ-17 for patients with AD based on identification.This a parallel, randomized, active-controlled, double-blind trial. A total 24 were enrolled. Either combination TJ-17, or alone orally administered 3 times daily 4 weeks. Of enrolled, 19 completed...
<i>Background:</i> Pancreatic cancer has the worst prognosis because of poor response to conventional therapy. We investigated clinical feasibility standardized allergen-removed <i>Rhus verniciflua </i>Stokes (aRVS) extract as a potential therapeutic agent for advanced or metastatic pancreatic cancer. <i>Patients and Methods:</i> From July 2006 June 2010, patients with adenocarcinoma were checked in our institution. After applying inclusion/exclusion...
Transparent, conducting, aluminum-doped zinc oxide (AZO) thin films were deposited on Corning 1737 glass by a DC magnetron sputter. The structural, electrical, and optical properties of the films, using various substrate temperatures, investigated. AZO fabricated with an ceramic target (Al2O3:2 wt%). obtained polycrystalline hexagonal wurtzite structure preferentially oriented in (002) crystallographic direction. lowest resistivity was 6.0 × 10−4Ω cm, carrier concentration 2.7 1020 cm−3 Hall...