KR – Page 51 – TechConnect Briefs

The Structure and Properties of ta-C Film with Dispersion of Incident Beam Energy

Lee K-R, Lee S-C, Lee S-H., Kim T.-Y., Lee K-R, Lee S-C, Lee S-H., Chung Y-C, Brenner D.W., Lee K-R, Lee S-C, Lee S-H., Korea Institute of Science and Technology, KR

We investigated the structural properties of ta-C film as a function of the dispersion in the incident kinetic energy. The ta-C films were produced on a diamond (100) surface by the bombardment of 3, 000 [...]

Multi-Scale Modeling of Processing of Carbon Nanotubes

Choi H.S., Kim J., Kim K.H., Hong K-H, Kim J., Kim K.H., Lee H.S., Shin J-K, Vasenkov A.V., Fedoseyev A.I., Kolobov V., Samsung Advanced Institute of Technology, KR

The current rapid development of nanotechnology has created a significant interest to predict the behavior of materials from the atomic to the engineering scales. However, it was found that such prediction is a very challenging [...]

Evaluation of the Degree of Exfoliation in Poly(epsilon-caprolactone) Nanocomposites Using by the Dynamic Mechanical Analysis

Chung J.W., Jeon J-D, Kwak S-Y, Seoul National University, KR

Nanocomposites composed of poly(epsilon-caprolactone) (PCL) and the organoclays which were layered silicate with the organic modifiers, i.e., nonpolar (OC25A) and polar (OC30B), were prepared by melt mixing. After mixing, we imposed additional heat to PCL/organoclay [...]

Direct Electrochemical Reduction of CuO Nano Particles to Cu Nano Particles in NaCl Solution

Hwang G-H, Han W-K, Hong S-J, Choi J.W., Kang S-G, Hanyang University, KR

Copper nanoparticles are widely used material. However many reactive metals are difficult to produce without complex and expensive procedures. For low cost and mass production, the electrochemical reduction is a convenient technique to manufacture metal [...]

Preparation of Functional LLDPE/LDPE/TiO2 Membranes

Wang X-Y, Wang X., Lee J-H., Wang X-Y, Wang X., Hong C-E, Chonbuk National University, KR

Nano-scaled TiO2 has now been used in polymer industry due to its promising properties in light catalyst and UV light shielding[1-3]. In the present paper, functional LLDPE/LDPE/TiO2 membranes were successfully manufactured. To solve the poor [...]

Uniform Nanoparticle based Monolayers Deposited by a Modified Spin Coating Technique

Subramanya Mayya K., Yeo I-S, Chung U-I, Moon J.T., Samsung Electronics Co.Ltd., KR

A method for deposition of uniform monolayers of cobalt nanoparticles (size ~ 10 nm) with uniformity in the nanoscale upto the macroscale is demonstrated on a 6" wafer by a modified spin coating method. The [...]

Modeling, Analysis and Design of Centrifugal Force Driven Transient Filling Flow into Rectangular Microchannel

Kim D.S., Kwon T.H., Pohang University of Science and Technology, KR

In this paper, we first present successful modeling and analysis results of a centrifugal force driven transient filling flow into a rectangular microchannel. Two types of exact and pseudo-static approximate solutions were derived for the [...]

Electrostatic Droplet Ejector with Monolithic Fabrication of Nozzle

Lee S-H., Byun D.Y., Ko H.S., Kim Y., Yang J.H., Han S.J., Son S.U., Oh J.T., Konkuk University, KR

This paper presents a novel mechanism of electrostatic micro droplet formation and ejection of fluid. Unlike conventional electrostatic jetting which requires a high operating voltage, we offer a, commercially viable, low operating voltage for droplet-on-demand [...]

A Fiber-Optic Biosensor Based on Monooxygenases and Sol–Gel Entrapped Fluoresceinamine for Trichloroethene and Tetrachloroethene

Ryoo D., Kim Y., Jeun K., Wood T., Choi Y., Jeonju Univ., KR

Tetrachloroethene (a.k.a. perchloroethene, PCE) and trichloroethene (TCE) are the most frequently detected groundwater contaminants which are suspected to cause cancer in humans. Monitoring of these carcinogens suffers from high costs and inaccuracy caused by cumbersome [...]

Controlling Colorimetric Reversibility of Nanostructured Polydiacetylenes

Lee C.H., Lee J.S., Lee C.H., Lee J.S., Park H-W., Lee C.H., Lee J.S., Ahn D.J., Kim J-M, Hanyang University, KR

Polydiacetylene liposome has specific color change of blue to red upon various kinds of stimuli. Stimuli can be a antigen-antybody, thermal stimuli and Ph change and even physical contact. From these charecteristics polydiacetylene used a [...]