Lee J-H. – Page 3 – TechConnect Briefs

Graphene and polymer composite using easy soluble expanded graphite

Lee J-H., Sungkyunkwan University, KR

ESEG was prepared from a fluorinated graphite intercalation compound (FGIC) - C2F∙nClF3 containing inorganic volatile intercalating agent ClF3. The severe expanded state, together with high specific surface area of the ESEG can give us essential [...]

Electronic properties control of single-walled carbon nanotube using spontaneous redox process of MnO4- and carbon nanotube

Shin D.-W., Lee J-H., Yoo J.-B., Sungkyunkwan University, KR

We investigated the effectiveness of electronic properties with single-walled carbon nanotube through spontaneous redox-reaction between the metal oxide ion such as MnO4- and carbon nanotube. The SWCNTs synthesized by the arc discharge method were used. [...]

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 [...]

Subthreshold Operation of Schottky Barrier Silicon Nanowire FET

Yoo S.K., Ahn J.Y., Yang S., Lee J-H., Gwangju Institute of Science & Technology (GIST), KR

This paper presents that the sensitivity of Schottky barrier silicon nanowires FET (SB-SiNWFET) is strongly modulated by the applied back gate voltage, and reveals that the operation in the subthreshold regime gives the significant enhancement [...]

Design and Analysis of a Small Scale Generator for the Portable Power Pack

Jeong H.G., Jeong N.J., Kim K.C., Jeong H.G., Jeong N.J., Lee J-H., Korea Institute of Energy Research, KR

In this paper, a small linear reciprocating engine and generator are designed and tested for a portable power pack. If an engine is used solely to produce electrical power in a portable power pack, it [...]

Control Strategies for Personal Rapid Transit System

Lee J-H., Korea Railroad Research Institute, KR

This paper presents a control system design for personal rapid transit (PRT) system and a configuration of apparatus to assess its control scheme. The control system can be divided into two parts: one is for [...]

Synthesis and Characterization of Templated Si-based Nanowires for Electrical Transport

Lee J-H., Carpenter M., Eisenbraun E., Xue Y., Geer R., University at Albany - State University of New York, US

Self-assembled Si nanowires (SiNWs) have been synthesized and characterized as a template for surface metal silicide formation to investigate confinement of electron transport at the nanowire surface. Silicon nanowires with diameters ranging from 5 to [...]

Multi-Bit/Cell SONOS Flash Memory with Recessed Channel Structure

Han K-R, Kwon H-I, Lee J-H., Kyungpook National University, KR

A novel device structure for 4-bit/cell with recessed channel structure is presented and characterized for NOR-type nonvolatile memory (NVM) technology. In this paper, we studied a 4-bit/cell SONOS flash memory cell Since two transistors in [...]

Prevention of Coalescence Stage from Nuclei at Initial Growth of Thin Film by Substrate Rotation in Physical Vapour Deposition

Koh S.K., Lee J-H., Han Y.G., Cho J-S, Joo J.H., Kralkina E.A., P&I Corp., KR

A method of nanoparticle fabrication in physical vapor deposition was introduced. Metal were deposited on the powdery substrate which were stirred by rotors. Particle size and prodcuction rate of metal nano particles were controlled by [...]