Abstract: Disclosed are a thin film transistor having high reliability and providing a simplified fabricating process, and a method of fabricating the thin film transistor. In the method, a dielectric substrate is prepared, a semiconductor layer is formed on the dielectric substrate, a gate dielectric film is formed on the semiconductor layer, a first gate electrode is formed on the gate dielectric film, a second gate electrode contacting a side wall of the first gate electrode is formed, and impurities are implanted into the semiconductor layer using the first gate electrode as a mask.

Abstract: The present invention provides a method of manufacturing Ni-doped TiO2 nanotube-shaped powder and a method of manufacturing a sheet film to be inserted into a high-pressure hydrogen tank for a fuel cell vehicle by mixing the Ni-doped TiO2 nanotube-shaped powder with a binder and compressing the mixture. The method of manufacturing Ni-doped TiO2 nanotube-shaped powder includes: forming Ni-doped TiO2 nanotube-shaped powder using Ni-doped TiO2 powder as a starting material; and drying the Ni-doped TiO2 nanotube-shaped powder in the temperature range of 60 to 200° C. for 2 to 24 hours.

Abstract: A battery pack including a secondary battery and a frame for mounting the secondary battery therein. A mounting ledge protrudes from one portion of the frame and a guide member protrudes from another portion of the frame. A circuit section is installed at a portion of the frame and inserted between the mounting ledge and the guide member so as to be connected to the secondary battery. A fixing part is provided in the frame and the circuit section in order to fix the circuit section to the frame.

Abstract: A pack case for a secondary battery. The pack case includes a frame member having a rectangular shape and a mounting ledge at an inner wall thereof. The pack case includes a dummy block mounted within the frame on one side of the mounting ledge. The pack case allows a single secondary battery to be mounted in a pack case adaptable for two secondary batteries.

Abstract: The present invention provides a method of manufacturing Ni-doped TiO2 nanotube-shaped powder and a method of manufacturing a sheet film to be inserted into a high-pressure hydrogen tank for a fuel cell vehicle by mixing the Ni-doped TiO2 nanotube-shaped powder with a binder and compressing the mixture. The method of manufacturing Ni-doped TiO2 nanotube-shaped powder includes: forming Ni-doped TiO2 nanotube-shaped powder using Ni-doped TiO2 powder as a starting material; and drying the Ni-doped TiO2 nanotube-shaped powder in the temperature range of 60 to 200° C. for 2 to 24 hours.

Abstract: This invention provides a method for preparing a polymethylmethacrylate spherical bead and in particular, it provides a method for preparing a polymethylmethacrylate spherical bead characterized in that it is prepared by preparing polymethylmethacrylate by polymerizing methyl-methacrylate monomers, evaporating remaining methylmethacrylate monomers by raising temperature up to at least 100° C. after the polymerization reaction, and washing the polymethylmethacrylate with a mixed solvent of ethanol and water and vacuum drying them.

Abstract: Provided are a thin film transistor and a method of manufacturing the same. The thin film transistor includes: a lower structure; a semiconductor layer formed on the lower structure and including a plurality of doping regions; a first insulating layer and a second insulating layer formed on the semiconductor layer and separated from each other; a third insulating layer formed on the first insulating layer and the second insulating layer; and a gate electrode layer formed between regions of the third insulating layer respectively corresponding to the first insulating layer and the second insulating layer.

Abstract: The present invention relates to titanium dioxide powder with a large specific surface area, a method for preparing thereof, and a use of the titanium dioxide as a photocatalyst, and more particularly, discloses a method for the preparation of titanium dioxide powder comprised of the steps of adding ice pieces or icy distilled water to pure titanium tetrachloride (TiCl4) to give an aqueous titanylchloride solution of 1.5 M or higher; diluting the aqueous titanylchloride with distilled water; obtaining precipitates from the diluted aqueous titanylchloride solution by standing for 2-20 hours at 15-70° C.; and filtering, washing and drying the above precipitates to give downy hair-shaped TiO2 powder with a specific surface area of 130-200 m2/g.

Abstract: The invention presented herein relates to a zirconium alloy with superior corrosion resistance and high strength for use in fuel rod claddings, spacer grids and structural components in reactor core of light water and heavy water nuclear power plant. The zirconium alloy of this invention with superior corrosion resistance and high strength comprises an alloy composition as follows: niobium in a range of 0.15 to 0.25 wt. %; tin in a range of 1.10 to 1.40 wt. %; iron in a range of 0.35 to 0.45; chromium in a range of 0.15 to 0.25; one element selected from the group consisting of molybdenum, copper and manganese in a range of 0.08 to 0.12 wt. %; oxygen in a range of 0.10 to 0.14 wt. %; and the balance being zirconium.

Abstract: A method for production of mono-dispersed and crystalline titanium dioxide ultra fine powders comprises preparing an aqueous titanyl chloride solution, diluting the aqueous titanyl chloride solution to a concentration of between about 0.2 to 1.2 mole and heating the diluted aqueous titanyl chloride solution and maintaining the solution in a temperature range of between 15 to 155.degree. C. to precipitate titanium dioxide. The aqueous titanyl chloride solution is prepared by adding ice pieces of distilled water or icing distilled water to undiluted titanium tetrachloride.

Abstract: The present invention is directed to an advanced zirconium alloy having superior corrosion resistance and high strength suitable for fuel rod cladding, spacer grids and other structural components in a reactor core of nuclear power plants.

Abstract: The invention presented herein relates to a zirconium alloy with superior corrosion resistance and high strength for use in fuel rod claddings, spacer grids and structural components as used in reactor core of light water and heavy water nuclear power plant. The zirconium alloy of this invention with superior corrosion resistance and high strength comprises an alloy composition as follows:niobium(Nb), in a range of 0.05 to 0.3 wt. %;tin(Sn), in a range of 0.8 to 1.6 wt. %;iron(Fe), in a range of 0.2 to 0.4 wt. %;a selected one from the group consisted of vanadium(V), tellurium(Te), antimony(Sb), molybdenum(Mo), tantalum(Ta), and copper(Cu), in a range of 0.05 to 0.20 wt. %;oxygen(O), in a range of 600 to 1400 ppm; andthe balance being zirconium(Zr).

Abstract: The present invention provides silica balls in a spherical shape, the silica balls having a porous internal structure and a dense outside layer.