A5100360903- Magnesium Alloys: Properties and Applications
- Aluminum Alloys Composites Properties
- Quantum Dots Synthesis And Properties
- Aluminum Alloy Microstructure Properties
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Perovskite Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- Chalcogenide Semiconductor Thin Films
- Advanced Chemical Sensor Technologies
- Child Abuse and Trauma
- Thin-Film Transistor Technologies
- Hydrogen Storage and Materials
- Anodic Oxide Films and Nanostructures
- Advanced Materials Characterization Techniques
- Child and Adolescent Psychosocial and Emotional Development
- ZnO doping and properties
- Analytical Chemistry and Sensors
- Organic Light-Emitting Diodes Research
- High Entropy Alloys Studies
- Microstructure and mechanical properties
- Nanowire Synthesis and Applications
- Polymer Nanocomposites and Properties
- Microstructure and Mechanical Properties of Steels
- High-Temperature Coating Behaviors
Kyungpook National University
2012-2023
Korea Advanced Institute of Science and Technology
2013-2023
Korea Institute of Materials Science
2022
Daegu TechnoPark
2019
Pusan National University
2010
Soongsil University
1995-2005
Abstract Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is most commonly used as an anode buffer layer in bulk-heterojunction (BHJ) polymer solar cells (PSCs). However, its hygroscopic and acidic nature contributes to the insufficient electrical conductivity, air stability restricted photovoltaic (PV) performance for fabricated PSCs. In this study, a new multifunctional additive, 2,3-dihydroxypyridine (DOH), has been PEDOT: PSS obtain modified properties PSS@DOH achieve...
As people around the world are spending increasing amounts of time online, question how online experiences linked to health and well-being is essential. This paper presents activities on Facebook associated with depressive states users. Based logs 212 young adults, we show not only sheer size network but also frequency diversity interactions social networks have close associations depression. Depressed individuals reported smaller involved regarding comments likes, two popular forms...
Objective The aim of this study was to investigate the compromised developmental trajectory functional connectivity among resting-state-related networks (RSFNs) in medication-naïve children with attention-deficit/hyperactivity disorder (ADHD). Subjects and Methods Using both independent component analysis dual regression, subject-specific time courses 12 RSFNs were extracted from 20 ADHD, age gender-matched control showing typical development (TDC). Both partial correlation coefficients a...
We demonstrate the first-ever surface modification of green CdSe/ZnS quantum dots (QDs) using bromide anions (Br-) in cetyl trimethylammonium (CTAB). The Br- ions reduced interparticle spacing between QDs and induced an effective charge balance QD light-emitting devices (QLEDs). fabricated QLEDs exhibited efficient injection because emission quenching effect their enhanced thin film morphology. As a result, they maximum luminance 71,000 cd/m2 external current efficiency 6.4 cd/A, both...
This study demonstrates that the dynamic recrystallization (DRX) and precipitation (DP) behaviors resultant mechanical properties of recently developed nonflammable AZXW8000 alloy vary significantly with extrusion temperature. With an increase in temperature from 250 to 350 °C, DRX behavior improves through transition dominant mechanisms twinning-induced continuous discontinuous DRX, which causes fraction extruded alloy. During at Mg17Al12 precipitates, are statically formed during...
This study investigates the microstructural characteristics of AZ31 Mg alloys rolled at room temperature (RT) and cryogenic (CT) variation in their microstructure hardness during subsequent annealing. Cryorolling induces formation more side cracks than does RT rolling, because reduction ability material to accommodate deformation CT. Numerous {10–11} contraction {10–11}-{10–12} double twins are formed both that CT, grains initial favorably oriented for twinning under rolling. The RT-rolled...
In this paper, we proposed a new type high sensitive volatile organic compounds (VOCs) gas sensor array that is based on the pulse width modulation technique. Four different types of solvatochromic dyes and two polymers, were used to make five sensing membranes. These deposited side-polished optical fibers by spin coater elements array. order ascertain effectiveness sensors, VOC gases tested. Finally, principal component analysis (PCA) has been discriminates VOCs.
In this paper, we demonstrate a facile, mild wetting (short residence time) poor solvent [isopropyl alcohol (IPA)] treatment, carried out on the top surface of spin-cast poly (3-hexylthiopene) (P3HT) and [6,6]-phenyl-C71-butyric acid methyl ester (PCBM) blend film, in order to fabricate high-performance polymer solar cells (PSCs). This method utilizes hydrophilic polar/hydrogen bonding interactions IPA with components (P3HT PCBM). The photovoltaic (PV) performance fabricated PSCs was...
Reduced hippocampal volume and alterations in white matter tracts have been frequently reported adults having the history of emotional maltreatment. We investigated whether these structural change occur adolescents with previous verbal abuse (VA) experiences.Hippocampal subfield connectivity measures were assessed 31 first year male high school students various degrees exposure to parental peer VA.The VA group showed significant reduction left cornu ammonis (CA) 1 subiculum compared low...
Internet use and on-line game play stimulate corticostriatal-limbic circuitry in both healthy subjects with gaming disorder (IGD). We hypothesized that increased fractional anisotropy (FA) decreased radial diffusivity (RD) would be observed IGD subjects, compared control these white matter indices associated clinical variables including duration of illness executive function. screened 181 male patients order to recruit a large number (n = 58) without psychiatric co-morbidity as well 26...
We propose a solution-processable ultraviolet (UV) photodetector with pn-heterojunction hybrid photoactive layer (HPL) that is composed of poly-n-vinylcarbazole (PVK) as p-type polymer and ZnO nanoparticles (NPs) an n-type metal oxide. To observe the effective photo-inducing ability UV photodetector, we analyzed optical electrical properties HPL which controlled by doping concentration NPs in PVK matrix. Additionally, confirmed dominantly depend on from UV-vis absorption photoluminescence...