Jeong Yeol Kim’s research while affiliated with Korea Institute of Industrial Technology and other places

Site-selective deposition of aerosol Pd nanoparticles on a substrate was employed to fabricate nanoscale Ag dots and rings through a subsequent electroless deposition. The fabricated nanoscale dot and ring arrays respectively showed properties in surface enhanced Raman (SER, with a 1.8 × 105 enhancement factor) and Fourier transform near infrared (FT-NIR, at 6153 cm−1 absorption band) spectra.

Ochre (Oc), with its high absorption and viscous properties and presence of several inorganic components, was incorporated in a polycarbonate-unmodified carbon nanotubes using processing methods such as electrospinning and compression molding, to produce strong and flame resistant composites with biaxially oriented nanomaterials. These composites were found to have good mechanical properties (ultimate tensile strength of ∼95.3 MPa) and flame resistance (∼464 J g−1K−1 heat release capacity) when ∼1 wt% of single-walled carbon nanotubes was used with 2.5 wt% Oc, which was used as a compatibilizer and flame retardant. POLYM. ENG. SCI., 54:1289–1299, 2014. © 2013 Society of Plastics Engineers

Refining silicon and silicon nanoparticles are an important research area in solar energy research. These are related with solar cell efficiency. Silicon nanoparticles are also used for thin film solar cell and screen printing technology. We review the synthesis of silicon nanoparticles and refining of silicon. Refined silicon nanoparticles with minimal boron content were fabricated with transferred arc plasma equipped with impactor system. To control the chemical reactions leading to the formation of these compounds, H2O was injected into the shield gas line of the plasma torch. The plasma reactive time for boron removal was evaluated. The reactive time was altered by changing the flow rate of the shield gas of the plasma torch, fixing the powder feed concentration. The removal ratio of boron was also evaluated to conform if the boron content in the silicon particles was in the range required for standard solar grade silicon. The sizes and compositions of the particles were analyzed by Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM), Inductively Coupled Plasma (ICP), and X-Ray Diffraction(XRD) analysis.