KR – Page 29 – TechConnect Briefs

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. [...]

Size dependent photoluminescence characteristics of GaN nanoparticles

Chen Y., Kang K.S., Jyoti N., Kim J., Inha University, KR

Various size of GaN nanoparticles have been fabricated with sol-gel method using Ga(NO3)3 as a presusor, HNO3 as a solvent, NH3OH as a pH adjusting agent, and citric acid as a chelating agent. After adding [...]

Synthesis of Cobalt-based Nanoparticles in Silicon Dioxide for Nonvolatile Memory Applications

Yoon J-H, Kangwon National University, KR

In this study, we report the direct growth of cobalt (Co) silicide nanocrystals (NCs) by thermally annealing of a simple sandwich structure consisting of an ultrathin Co layer sandwiched between two silicon-rich oxide (SiOx) layers, [...]

Cleaning 10nm ceramic particles by the supersonic particle beam

Kim I., Hwang K., Lee J.W., POSTECH, KR

Cryogenic aerosol beam using micron-sized aerosol particles has long been successfully used to remove contaminant particles down to 50nm, and supersonic particle beam using particles smaller than 100nm lowered the limit of cleaning down to [...]

Nano Silver – Why It is so Hot Now?

Lem K.W., Haw J.R., Lee D.S., Brumlik C., Sund S., Curran S., Smith P., Brauer S., Schmidt D., Konkuk University, KR

It has been known for centuries that silver has an antiseptic effect. In ancient times, many Greeks used silver vessels for drinking water storage. Koreans have also chosen silver to make their metal chopsticks. Recently, [...]

Fabrication and characterization of optoelectric device using CdSe nanocrystal quantum dots/single-walled carbon nanotubes heterostructure

Shim H-C, Jeong S., Kim S., Han C-S, Korea Advanced Institue of Science and Technology (KAIST), KR

The ability to transport extracted carriers from the development of NQDs (nanocrystal quantum dots) based optoelectronic sensors have drawn considerable attention due to NQDs’ unique optical properties. Coupling of NQDs to 1-D nanostructures such as [...]

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 [...]

Synthesis of thermal interface material with high thermal conductivity for high efficacy of LED

Han C.J., Han J.-I., Yu S.H., Hong S-J, Kim Y-S, Han C.J., Han J.-I., Korean Electronics Technology Institute, KR

Thermal dissipation problem for LED is critical for high efficacy and reliability. Inorganic filled grease type thermal interface material (TIM) has widespread use for heat management of LED. Conventional TIM materials, however, has relative low [...]

Measured and predicted performance of a micro-thermophotovoltaic device with a heat-recirculating micro-emitter

Park J.H., So J.S., Moon H.J., Kwon O.C., Sungkyunkwan University, KR

A new configuration of a 1-10 W micro-thermophotovoltaic (micro-TPV) device with a heat-recirculating micro-emitter is studied experimentally and computationally. In the micro-TPV device thermal energy is directly converted into electrical energy through thermal radiation without [...]