Kim J.H. – TechConnect Briefs

Preparation of ion group functionalized diblock copolymers and examination of their thermogelling properties

Lee B.K., Kwon D.Y., Kwon J.S., Park J.H., Kwon D.Y., Kwon J.S., Kim J.H., Kim M.S., Oh S.H., Kim J.H., Kim M.S., Ajou University, KR

To investigate thermogelling behavior, in this study, methoxy polyethylene glycol-b-[poly(ε-caprolactone)-ran-poly(6-chloride-ε-caprolactone) (PCL-ran-PfCL)] (PCL-Cl) diblock copolymers were designed such that the PfCL content in the PCL segment was varied. The PCL-Cl diblock copolymers were derivatized by introducing [...]

Preparation of ion group functionalized diblock copolymers and examination of their thermogelling properties

Lee B.K., Kwon D.Y., Kwon J.S., Park J.H., Kwon D.Y., Kwon J.S., Kim J.H., Kim M.S., Oh S.H., Kim J.H., Kim M.S., Ajou University, KR

To investigate thermogelling behavior, in this study, methoxy polyethylene glycol-b-[poly(ε-caprolactone)-ran-poly(6-chloride-ε-caprolactone) (PCL-ran-PfCL)] (PCL-Cl) diblock copolymers were designed such that the PfCL content in the PCL segment was varied. The PCL-Cl diblock copolymers were derivatized by introducing [...]

Thermal conductivity model for polymer/Boron Nitride nanocomposite considering air void content

Park S.Y., Kim J.H., Shin M.W., Yonsei University, KR

Polymer/Boron Nitride (BN) nanocomposite is promising interfacial material for cooling of electronic systems. It is important to determine percolation threshold when it practically uses in the industry. But, the exact prediction with existing model is [...]

NH3 sensing properties of centimeter scaled CVD graphene in ambient condition

Lim J., Anoop R., Kim J.H., Kim Y.J., Yoon J., Ahn H-R, Song S., Kim J.H., Kim Y.J., Jun S.C., Yonsei University, KR

The present work reports ammonia (NH3) gas sensing properties of Graphene film synthesized by chemical vapor deposition (CVD) in ambient condition. Graphene with a large area is synthesized on Cu foils by chemical vapor deposition [...]

Investigation of Taxol effects on morphological and micromechanical properties of human endometrial adenocarcinoma cells by AFM

Kim J.H., Kim K.S., Cho C.H., Choi Y.J., Kim J.H., Kim K.S., Choi Y.J., Jung G.B., Jung M-H, Yoon K-S, Woo Lee J., Lee G.J., Jung G.B., Jung M-H, Park H.K., Kyung Hee University, KR

The effects of Taxol on morphological and micromechanical properties of human endometrial adenocarcinoma (Ishikawa cell), were investigated by atomic force microscopy (AFM). The morphological and mechanical properties of the Ishikawa cell were significantly changed by [...]

A Permselective Layered Silicate Modified by Acid-treatment and Its Use for Blocking of Methanol Crossover in DMFC

Yoo H., Kim J.H., Kwak S-Y, Seoul National University, KR

Layered silicates currently find uses in ion-exchange, adsorption, catalysis and fabrication of nanocomposites. Several layered silicates have channel systems or open frameworks within layers. They can be used to solve the problem for direct methanol [...]

A Permselective Layered Silicate Modified by Acid-treatment and Its Use for Blocking of Methanol Crossover in DMFC

Yoo H., Kim J.H., Kwak S-Y, Seoul National University, KR

Layered silicates currently find uses in ion-exchange, adsorption, catalysis and fabrication of nanocomposites. Several layered silicates have channel systems or open frameworks within layers. They can be used to solve the problem for direct methanol [...]

Phosphate recognition using multilayer charged thin films containing zirconium (Zr) ions for biochip applications

Lee M., Kim J.H., Kim N., Kim S-H, Kim J.H., Kim N., Kim S-H, Shin C.-J., Koh K., Kim J.H., Kim N., Kim S-H, Ajou University, KR

The phosphate residue plays an important role as not only the structural component of DNA and lipid but also the activation signal of protein in the cellular signaling pathways. Therefore, the selective recognition for the [...]

Large area, directionally aligned single-walled carbon nanotube thin film by self-assembly and compressed sliding methods

Najeeb C.K., Lee J-H., Chang J., Kim J.H., Ajou University, KR

To fabricate large area directional arrangement of SWNTs, we employed two different methods such as self assembly of surface modified SWNTs by drop casting or spin coating and by compressed sliding of SWNT dispersion between [...]

High resolution imaging of biological materials using hydrophobic carbon nanotube AFM probes

Lee J-H., Najeeb C.K., Chang J., Kang W-S, Nam G-H, Kim J.H., Ajou University, KR

Carbon nanotube (CNT) tipped atomic force microscope (AFM) probes have shown a significant potential for obtaining high resolution imaging of nanostructure and biological materials. In this work, we report a simple method to fabricate single-walled [...]