A5100840285- Luminescence Properties of Advanced Materials
- Advanced Sensor and Energy Harvesting Materials
- Nanomaterials and Printing Technologies
- Thermal properties of materials
- Gas Sensing Nanomaterials and Sensors
- Organic Light-Emitting Diodes Research
- Conducting polymers and applications
- Synthesis and properties of polymers
- Organic Electronics and Photovoltaics
- Additive Manufacturing and 3D Printing Technologies
- Thermal Radiation and Cooling Technologies
- Aluminum Alloys Composites Properties
- Surface Roughness and Optical Measurements
- Advanced Optical Imaging Technologies
- Terahertz technology and applications
- Advanced ceramic materials synthesis
- Photopolymerization techniques and applications
- Perovskite Materials and Applications
- Silicone and Siloxane Chemistry
- Ga2O3 and related materials
- Plasma Applications and Diagnostics
- Plasma Diagnostics and Applications
- Optical properties and cooling technologies in crystalline materials
- Interactive and Immersive Displays
- Electrophoretic Deposition in Materials Science
Yonsei University
2022-2025
Korea Electronics Technology Institute
2005-2023
Abstract A smooth, ultra-flexible and transparent electrode was developed from silver nanowires (AgNWs) embedded in a colorless polyimide (cPI) by utilizing an inverted film-processing method. The resulting AgNW-cPI composite had transparency of >80%, low sheet resistance 8 Ω/□ ultra-smooth surfaces comparable to glass. Leveraging the robust mechanical properties flexibility cPI, thickness film reduced less than 10 μm, which is conducive extreme flexibility. This exhibited durability, for...
A highly flexible and transparent conductive electrode based on consecutively stacked layers of polymer (CP) silver nanowires (AgNWs) fully embedded in a colorless polyimide (cPI) is achieved by utilizing an inverted layer‐by‐layer processing method. This CP‐AgNW composite exhibits high transparency >92% at wavelengths 450–700 nm low resistivity 7.7 Ω ◻ −1 , while its ultrasmooth surface provides large contact area for pathways. Furthermore, it demonstrates unprecedentedly flexibility...
Thermally conductive films play a crucial role in expanding the lifetime of electronics by dissipating concentrated heat to heatsinks. In this work, thermally film (g-TC film) was manufactured using perforated graphite sheet (p-GS) and UV-curable pressure-sensitive adhesive (PSA) lamination. A novel PSA prepared incorporating abietic acid ester into composition. The became tack-free upon UV irradiation; thus, flexible g-TC with 52-μm thickness obtained. defects caused air bubbles were...
Recently, advances in nano-materials research have opened the door for various transparent conductive materials, which include CNTs, graphene, Ag and Cu nanowires, printable metal grids. Among them, nanowires are particularly interesting to synthesize because bulk exhibits highest electrical conductivity among all metals. We tried with a small diameter long length, resulting large aspect ratios. For synthesis of effects experimental parameters, i.e., reaction time synthesis, molar ratio...
Indium tin oxide (ITO) is one of the most widely used transparent conducting oxides because its two chief properties, electrical conductivity and optical transparency, as well ease with which it can be deposited a thin film. In this study, we fabricated ITO nanoparticles, dispersed them in an organic mixture liquid to make solution for printing. The was ink-jet printed on glass, employed microwave heating technology coated layer conductive transparent. Microwave uses electromagnetic waves...
In order to obtain the practical vacuum data in field emission display packages which are composed of very thin gapped glass plates, effects heating time and temperature as well geometrical factors such gap size between inner diameter, length evacuation tube were investigated. Even though system is an ultrahigh more than 1.0×10−7 Torr, attained level with 55 mm×55 mm×1.1 mm panel was 3.0×10−5 Torr. The attainable for calculated by considering conductance system. measured values consistent...
As electronics become more portable and compact, the demand for high-performance thermally conductive composites is increasing. Given that thermal conductivity correlates with content of fillers, it important to fabricate high filler loading. However, increased viscosity upon addition these fillers impedes fabrication filler-reinforced through conventional methods. In this study, hexagonal-boron-nitride (h-BN)-pattern-embedded aluminum oxide (Al2O3) (Al/h-BN/Al composites) were fabricated by...
In response to the demand for high-performance materials, epoxy thermosetting and its composites are widely used in various industries. However, their poor toughness, resulting from high crosslinking density of network, must be improved expand application manufacturing flexible products. this study, ductile was produced using thiol compounds with functionalities 2 3 as curing agents. The mechanical properties were further enhanced by incorporating fumed silica into it. To increase filler...
An oxide-free strategy to fabricate extremely thin, flexible, and smooth transparent electrodes is introduced by H. J. Son, J.-W. Kim, co-workers on page 4580. The developed method, an inverted layer-by-layer process, enables the design fabrication of highly efficient organic solar cells showing excellent mechanical stability with ultra-small folding radiuses.
Abstract We developed a Flat Fluorescent Lamp(FFL) with high luminance by using the same discharge mode as PDP. Our FFL has simple and unique structure where glass substrates are used dielectric layers. The panel striped line shape of 10 inch diagonal size. Xe‐Ne Xe‐He, Xe‐Ne‐He mixture gases were to generate plasma. showed maximum 8,610cd/m 2 under bias 20kHz pulse 2.9kV.
Here we tried to show the possibility of mechanical milling method for fabrication SiC nanoparticles and ink-jet printing make patterns use as several applications, e.g., micro hotplates. Planetary was employed fabricate nano-scale particles from coarse powders. After 100 hours milling, size decreased about nm, which sufficient formulation ink printing. The were dispersed in an system consisted ethylene glycol ethanol with a small amount additives. could be successfully printed on alumina...
Abstract Thermal interface materials (TIMs) have been widely employed to address the thermal issues arising in electronics. Given that heat generated at sources is dissipated into sinks through TIMs, softer they are, more efficient transfer is. In this paper, a thermally conductive pressure-sensitive adhesive (PSA) film (gr-PSA film) which graphite composite patterns were embedded was fabricated and its conductivity peeling behavior investigated. Because of low storage modulus (2.4 × 10 4...
In response to the increasing demand for flexible devices, there is effort manufacture electrodes. However, difficulty of handling a thin film an obstacle production this study, heat-induced peelable pressure-sensitive adhesive (h-PSA) was fabricated and used electrode with sub-tenth micron thickness. Unlike control PSA, incorporation amide groups made h-PSA fail through failure at temperatures ranging from 20 80 °C. Compared peeling adhesion (1719 gf/in) measured °C, value (171 °C decreased...
Despite the widespread application of Autonomous Vehicles (AV) to various services, there has been relatively little research carried out on pedestrian-AV interaction and trust within context service provided by AV. This study explores communication design strategy promoting a pedestrian's positive attitude driverless services using non-verbal social cues. An empirical was conducted with an experimental VR environment measure participants' intimacy, trust, brand toward Further understanding...
SiC nanoparticles were successfully fabricated by a high energy ball milling method, so that can be used in the printed electronics to make thin film patterns. Here we utilized waste of Si sludge for making nanoparticles. In order achieve uniform from nanoparticle ink, fine sized less than 100 nm has uniformly dispersed. this study, employed ultra apex (UAM) system particle comminution and dispersion. We investigated effects parameters, e.g., size ZrO2 bead time. The particles reached about...