Hanyang University – TechConnect Briefs

Azide-alkyne cycloaddition by recyclable heterogeneous Cu catalysts on reverse phase silica gel

Jang Y., Kim H., Lim M., Rhee H., Hanyang University, KR

Previously, we developed heterogeneous Pd catalysts immobilized onto functionalized reverse phase silica gel. These catalysts were applied to Suzuki cross coupling reactions and the hydrogenation reactions in water with good results. In this study, Cu [...]

Pd nanoparticles immobilized onto polymer-inorganic hybrid support: Synthesis, characterization and catalytic activity on Suzuki-Miyaura coupling reactions in water

Lim M., Kim H., Jang Y., Rhee H., Hanyang University, KR

The development of heterogeneous metal catalysts supported on a solid support has attracted attention. This catalyst system has the advantages of ease of catalyst separation and reusability, and has higher reactivity due to the larger [...]

Zn(II)-Mediated Gold Nanosensors for Protein Phosphatase Assay

Lee J-O, Kim G.B., Kim Y.P., Kim G.B., Kim Y.P., Hanyang University, KR

Since gold nanoparticle (AuNP)-based colorimetric assays have been preferred for enzyme activity assay,[1] a few of attempts have been designed for the simple and rapid detection of PP activity. However, they still have drawbacks including [...]

Morphology and Size Control of Mesoporous ORMOSIL Particles

Jung G.I., Kim J-S, Koo S.M., Hanyang University, KR

Mesoporous ORMOSIL particles with tailored morphology and/or controlled size were prepared by a simple two-step process. The first step, synthesis of monodisperse ORMOSIL particles with multi-layered structure, involved a one-pot process in an aqueous solution [...]

Self-assembled monolayer (SAMs) and electroplating process for Cu filling on 32-nm trench

Hong M., Hanyang University, KR

To improve the conformality of Cu seed layer prepared by ELD, we have also developed a novel activation technique by combining a self assembled monolayer (SAM) and Au catalyst. A coupling agent to anchor Au [...]

Effects of the Shape of Nanoparticles on the Crystallization Behavior of Poly(ethylene terephthalate) Nanocomposites in the Flow Fields

Kim B.C., Jang K.H., Hahm W.G., Kikutani T., Lee J., Hanyang University, KR

This paper investigated the effects of the shape of nanoparticles on the crystallization behavior of high molecular weight poly(ethylene terephthalate) (PET ; inherent viscosity of 0.98 g/dl) in the shear and elongational flow fields. Two [...]

Modeling hysteresis and creep characteristics of a carbon-nanotube-reinforced electroactive actuator

Sohn K., Shin S.R., Yi B-J, Kim S.I., Kim S.J., Kim S.I., Kim S.J., Hanyang University, KR

For smart materials that are useful in wide variety of applications such as microelectromechanical systems (MEMS), machine components, and artificial muscle, the nonlinear phenomena of hysteresis and creep are essential consideration. We investigated movement of [...]

Effects of interface on the physical properties of nanoparticle-filled composites

Jang K.H., Kim B.C., Hanyang University, KR

The effects of interface affinity on the rheological responses of nanoparticle suspended polymer solutions were investigated. The polarity on rheological properties of zinc oxide (ZnO) nanoparticle filled-polymer solution was investigated for polyacrylonitrile (PAN) and polystyrene [...]

Efects of silver nanoparticle on the physical properties of syndiotactic polypropylene

Kang E.C., Kim B.C., Hanyang University, KR

The effects of silver nanoparticle on the physical properties of syndiotactic polypropylene (sPP) were investigated in terms of rheological responses and crystallization behavior under shear. Silver nanoparticle played as the nucleating agent of sPP by [...]

Ferritin-based Hybrid Nanofibers with Magnetic Properties

Shin M.K., Cho Y., Kim S.J., Hanyang University, KR

There has been intense interest in polymeric nanocomposites using nanoparticles, nanowires, and nanotubes, because nanocomposites possess improved physical properties versus the unmodified polymer. In particular, a mixture of polymers and nanoparticles can form flexible nanocomposites [...]