Lee J-G – TechConnect Briefs

Electrohydrodynamic Micro-droplet Generation on Both Conducting and Non-conducting Surfaces by Electric Induction

Cho H.-J., Huh N., Ko C., Lee B-S, Lee J-G, Samsung Advanced Institute of Technology, KR

There is a rapid growing need of the drop-based delivery of small quantities of bio-functional materials, such as cells. We report a brand-new printing method to generate a single droplet in the range of pL [...]

One-step Target Protein detection from Whole Blood in a Lab-on-a-Disc

Cho Y-K, Kim S., Ko C., Lee B-S, Lee J-G, Lee J.N., Park J.M., Samsung Advanced Institute of Technology, KR

We report a fully integrated, one-step Lab-on-a-Disc for detecting target protein from whole blood utilizing centrifugal microfluidics, so called “Immunoassay Lab-on-a-Disc”. The design principle is the microbead-based sandwich ELISA on the Disc. The microbeads are [...]

One-step White Blood Cell Separation from Whole Blood

Kim B.C., Lee J-G, Park J.M., Samsung Advanced Institute of Technology (SAIT), KR

Isolation of White Blood Cells (also called “WBC”) from whole blood is a first very important step for many in vitro assays. One currently accepted technique for WBC separation, referred to as the conventional manual [...]

Multifunctional Microvalves Control by Optical Illumination on Nanoheaters and its Application in Centrifugal Microfluidic Devices

Cho Y-K, Ko C., Lee B-S, Lee J-G, Park J.M., Samsung Advanced Institute of Technology, KR

We report ultrafast control of phase-change based microvalves utilizing nanoheaters; ferronanoparticles dispersed in paraffin wax, and heating by optical illumination using a 808 nm laser diode. High speed camera images showed that the actual response [...]

One-step Pathogen Specific DNA Extraction from Whole Blood On a Centrifugal Microfluidic Device

Cho Y-K, Ko C., Lee B-S, Lee J-G, Lee Y., Park J.M., Samsung Advanced Institute of Technology, KR

We report a fully integrated pathogen specific DNA extraction device utilizing centrifugal microfluidics on a polymer based CD platform. Using the innovative Laser Irradiated Ferrowax Microvalves (LIFM) together with the rapid cell lysis method using [...]

Three-dimensional Simulation method of Anisotropic Wet Chemical Etching Process

Lee J-G, Won T., Inha University, KR

Anisotropic wet chemical etching is still one of the fundamental techniques employed in silicon bulk micromaching. However, there are still unsolved problems with the simulation of the process. And most of the available simulation software [...]

Topography Simulation for Structural Analysis Using Cell Advancing Method

Kwon O., Lee J-G, Won T., Yoon S., Inha University, KR

We propose an cell advancing method which is different but stems from the traditional cell method for accurate topography simulation. It is considered that the cell advancing method is very suitable to figure out the [...]

Fabrication of Metal Oxide Coaxial Nanotubes using Atomic Layer Deposition

Jeong D-K, Jung W.-G., Kim J-Y, Lee J-G, Oh T-K, Shin H-J, Sung M-M, Kookmin University, KR

We fabricated of nanotubular structures of TiO2 and ZrO2 using the gas-phase fabrication method atomic layer deposition (ALD) with nanoporous structure of polycarbonate (PC) templates. Contact printed alkylsiloxane monolayers on both sides of PCs were [...]

Metastable Site in Amorphous Carbon Lattice Generated by Rapid Quenching of Liquid Diamond

Lee J-G, Lee K-R, Lee K.H., Lee S-C, Lee S-H., Korea Institute of Science and Technology, KR

Formation of amorphous structure of carbon by rapid quenching of the liquid phase was investigated by molecular dynamic (MD) simulation using Tersoff’s empirical potential. Physical properties of crystalline diamond, such as lattice parameter, surface energy [...]

Molecular Dynamics Study on Deposition Behaviors of Au Nanocluster on Substrates of Different Orientation

Hwang N.M., Lee J-G, Lee K-R, Lee K.H., Lee S-C, Korea Institute of Science and Technology, KR

Effects of the substrate orientation on the homo-epitaxial rearrangement of the deposited Au cluster were studied by molecular dynamics (MD) simulation using embedded-atom method (EAM) potential. (011), (001), and (111) low indexed surfaces were used [...]