KR – Page 22 – TechConnect Briefs

Role of Hard Segment Induced Nanosized Domain on Dilute Solution Properties of Ether Based Thermoplastic Polyurethanes

Lem K.W., Lee D.S., Haw J.R., Song G.S., Curran S., Sund S., Iqbal Z., Brumlik C., Konkuk University, KR

Many useful polyurethane components, such as films, are prepared from solution, in the form of dispersion, emulsion, or suspension. The ultimate properties of such films depend on the effect of nano scaled structures in the [...]

The Effect of Various Binder Additions on the Magnetic Properties of Soft Magnetic P/M Cores

Kim H.-J., Kim K.S., Kim S.I., Kim H.-J., Kim K.S., Kim S.I., Song J-J, Yoon S.C., Kim H.-J., Kim K.S., Kim S.I., Inje University, KR

Recently, there has been a growing demand for soft magnetic materials used in miniaturized electromagnetic devices with high performance, which can be used at a high frequency range. These applications include Switch Moded Power Supply, [...]

Retarded Growth of Nano-sized Carbide Particles in Liquid Metals at 1500°C

Kim J., Kim J., Seo M., Kim J., Kang S., Seoul National Univ., KR

The nanocrystalline solid-solution carbide powders were prepared by carbo-thermal reduction after high-energy planetary milling of proper oxide mixture. Then, particle growth behaviours of nanocrystalline transitional metal carbides such as (W,V)C and (Ti,W,M1,M2)(CN) were investigated and [...]

Control of Pore Size in Nanoporous Ultralow Dielectrics

Kang I-Y, Song S.H., Rhee H-W, Sogang University, KR

As feature size and metal-to-metal space become smaller, ultralow dielectric materials are required to reduce signal delay and cross talk of interconnect. One of the most promising approach to reduce these problems is the introduction [...]

Simultaneous determination of guanine and adenine on nano-poly(4-aminothiophenol) patterns modified ITO electrode

El-said W.A., Kim T-H., Choi J.W., Sogang University, KR

Here, poly(4-aminothiophenol) nano-patterns modified ITO electrode was fabricated to investigate the electrochemical behavior of A and G individual as well as simultaneous detection of mixture of A and G. The results demonstrated that nano-poly(4-aminothiophenol)/ITO can [...]

Biological synthesis of copper nanoparticles using plant extract

Lee G., Lee H.J., Lee G., Lee H.J., Jang N.R., Yun J.H., Song J.Y., Kim B.S., Chungbuk National University, KR

Copper nanoparticles were biologically synthesized using plant leaf extract as reducing agent. On treatment of aqueous solutions of CuSO4•5H2O with leaf extract (Magnolia), stable copper nanoparticles were formed. UV-vis spectroscopy was used to monitor the [...]

Hydrothermal approach to a carbon graphite encapsulated FeCo nanocrystals for diagnosis, hyperthermia therapy and siRNA delivery

Park J.K., Jung J.J., Subramaniam P., Shah B., Kim C.J., Lee J-K, Lee K.B., Lee J-K, Lee K.B., Korea Research Institute of Chemical Technology, KR

An effective therapeutic approach against cancer requires the combination of several modalities such as chemotherapy, radiation, and hyperthermia. However, the development of multifunctional nanomaterial-based systems that can provide the combined therapeutics and molecular imaging with [...]

Europium-doped gadolinium sulfide nanoparticles as a multimodal imaging agents for bio-application

Park J.K., Lee S.J., Korea Research Institute of Chemical Technology, KR

Most of the magnetic nanoparticles based on iron oxides have been widely used experimentally for numerous in vivo applications such as magnetic resonance imaging (MRI) contrast enhancement, tissue repair, hyperthermia, medical diagnostics, and therapeutics. These [...]

Self-assembled fluorescent magnetic nanoprobes for multimode-biomedical imaging

Lim E.-K., Haam S., Yonsei University, KR

We fabricated multimode nanoprobes for acquisition of biological information at different object levels, i.e., in vivo detection and ex vivo validation for characterizing tumor angiogenesis. Fluorescent magnetic nanoprobes (FMNPs) were synthesized by using amphiphilic pyrenyl [...]

Synthesis of Molybdenum Nanoparticles by RF Plasma

Park J.-I., Research Institute of Industrial Science and Technology(RIST, KR

Molybdenum nanoposders have been synthesized in a RF plasma by controlling the various process paarameters. The obtained Mo nanopowders are characterized by SEM, TEM, and XRD. Mo nanopowders are sintered to a pellet with ultra-fine [...]