KR – Page 3 – TechConnect Briefs

Effects of Mn doping on Grain and Grain Boundary Properties of Bi2WO6-based ZnO Varistor using Dielectric Functions for Surge Protection Application

Hong Y.W., Ha M.J., Paik J.H., Cho J-H., Jeong Y.H., Yun J.S., Park W.I., Korea Institute of Ceramic Engineering & Technology, KR

Polycrystalline ZnO has been applied to various electrical and optical applications such as gas sensors, piezoelectric transducers, phosphors, transparent conducting films, and varistors. To control the figure of merits of these devices it is essential [...]

Nanoclay-reinforced Nanocellulose Composite Films with Improved Heat resistance, Gas Barrier Performance, and Mechanical properties

Ryu J.H., Jeong Y.G., Chungnam National University, KR

Since nanocellulose (NC) has excellent strength, modulus, lightness, and thermal stability, it has been widely utilized for composites, electronics, sensors, papers, coatings, films, aerogels, health care, additives, etc. In this study, to attain NC films [...]

Magnetic properties of ceramic composite using melt process

Lee S-H., Sunmoon University, KR

The critical transition temperature and critical current density of YBaCuO single crystal bulk were measured after heat diffusion treatment in nano powder. The superconducting start temperature was found to high at 91.62K. It can be [...]

Effects of Ca doping on Grain and Grain Boundary Properties of ZnO-Zn2BiVO6-Co3O4 Ceramics using Dielectric Functions for Surge Arrestor

Hong Y.W., Ha M.J., Paik J.H., Cho J-H., Jeong Y.H., Yun J.S., Park W.I., Korea Institute of Ceramic Engineering & Technology, KR

Polycrystalline ZnO has been applied to various electrical and optical applications such as gas sensors, piezoelectric transducers, phosphors, transparent conducting films, and varistors. To control the figure of merits of these devices it is essential [...]

Modeling and Simulation on Crossroad-Type Graphene-Resonator Accelerometer

Kwon O-K., Kang J-W, Korea National University of Transportation, KR

Accelerometers have multiple applications in industry and science, and can be used as sensors in a wide variety of devices. Highly sensitive accelerometers are components of inertial navigation systems for both aircraft and missiles, as [...]

Linear-Logarithmic Two-Transistor Active Pixel Sensor with Wide Dynamic Range

Jo S-H, Bae M., Choi B-S, Choi P., Choi B-S, Choi P., Shin J-K, Kyungpook National University, KR

Image sensor technology has progressed from advanced semiconductor technology. The complementary metal–oxide–semiconductor (CMOS) process offers the capability of integrating smart functions on imagers in a single chip. As CMOS technology scales down, the pixel size [...]

Zn(Ⅱ)-Based Metal-Organic Framework/Nafion® Composite Membrane with High Proton Conductivity for Fuel Cell Applications

Kim H.-J., Kabir L., Kyungpook National University, Daegu 41566, Korea, KR

Metal-organic frameworks (MOFs) can serve as a scaffold to anchor acidic groups and provide efficient proton transfer pathways owing to their highly ordered structures and modular nature. Intentional coordination of MOFs with a conductive polymer [...]

Performance of a heat-recirculating combustor for thermophotovoltaic power devices with photonic crystal structure

Kim H.K., Kim T.-Y., Kim H.K., Kim T.-Y., Kwon O.C., Sungkyunkwan University, KR

The demand for high-performance portable power sources is recently enhanced due to the increasing use of electronic devices. Portable power systems using the combustion of hydrocarbon fuels have been considered as a novel alternative to [...]

Synthesis of highly efficient ZnAgInS-ZnInS/ZnS quantum dots and application for down-converted LEDs

Oh J.H., Lee K.N., Lee S., Kim S., Lee K.N., Lee S., Do Y.R., Kookmin University, KR

This study introduces innovative exothermic reaction assisted synthetic method for highly efficient green emitting ZnAgInS-ZnInS/ZnS quantum dots (QDs) by simply adding excess amounts of Zn precursors (Zinc acetate dehydrate, ZAD) and application for down-converted light [...]

Robust Transparent Glass-fabric Reinforced Plastic (FRP) Films for Flexible Electronics Substrate Platform

Bae B.-S., Im H-G, Jung J., KAIST, KR

To realize the flexible electronics in place of rigid electronics constructing on PCB substrates or glass substrates, robust film substrate with thermal resistance, strength and low thermal expansion should be developed. Specially, some applications of [...]