Abstract: The present invention provides a semiconductor based photovoltaic device and a manufacturing method thereof. The semiconductor based photovoltaic device is able to absorb light with a wide band wavelength, and has high photoelectric conversion efficiency since it has high electron-hole pair separation efficiency.

Abstract: The present invention relates to a nanoparticle sensor which is capable to identify an existence/nonexistence, a concentration, a size distribution and a component of the nanoparticles using an electrode pair having a separated distance of a nano-gap, in which the nanoparticle sensor includes a unit element configured with a plurality of unit electrodes electrically operated independently from each other and detects the nanoparticles based on the number of the unit electrodes electrically changed due to the nanoparticles captured into the nano-gap. The nanoparticle sensor of the present invention can detect the component, the size, the size distribution and the concentration of the nanoparticles by single measurement, have high reliability and regeneration while reducing a detection time by statistical method via a plurality of electrode pairs having the nano-gap, and detect even very low concentration of nanoparticles.

Abstract: The present invention provides a semiconductor based photovoltaic device and a manufacturing method thereof. The semiconductor based photovoltaic device is able to absorb light with a wide band wavelength, and has high photoelectric conversion efficiency since it has high electron-hole pair separation efficiency.

Abstract: Nanowires are disclosed which comprise transition metal oxides. The transition metal oxides may include oxides of group II, group III, group IV and lanthanide metals. Also disclosed are methods for making nanowires which comprise injecting decomposition agents into a solution comprising solvents and metallic alkoxide or metallic salt precursors.

Abstract: The present invention relates to a nanoparticle sensor which is capable to identify an existence/nonexistence, a concentration, a size distribution and a component of the nanoparticles using an electrode pair having a separated distance of a nano-gap, in which the nanoparticle sensor includes a unit element configured with a plurality of unit electrodes electrically operated independently from each other and detects the nanoparticles based on the number of the unit electrodes electrically changed due to the nanoparticles captured into the nano-gap. The nanoparticle sensor of the present invention can detect the component, the size, the size distribution and the concentration of the nanoparticles by single measurement, have high reliability and regeneration while reducing a detection time by statistical method via a plurality of electrode pairs having the nano-gap, and detect even very low concentration of nanoparticles.

Abstract: The present invention relates to a process of preparing a nanogap electrode and a nanogap device using the same, and a preparing process according to the present invention is characterized in that reduced metal is grown by reduction reaction from a metal ion in solution on the surface of a metal pattern with a predetermined shape. A method of preparing a nanogap electrode according to the present invention has an advantage that nanogap electrodes having a gap distance of 1-100 nm, which are difficult to prepare by a conventional method, can be easily prepared in a reproducible and uniform manner.

Abstract: Disclosed herein are a nano electronic device and a method of fabricating the same. The nano electronic device includes a ferroelectric nano-structure and a semiconducting nano-wire. Polarization formed on the ferroelectric nano-structure is utilized.

Abstract: The present invention relates to an apparatus and a method for detecting the presence of a particular organic, inorganic, metallic, natural or synthetic biomaterial and the concentration thereof. More particularly, the present invention relates to an apparatus and a method for detecting the identity, presence or absence, and concentration of a material to be detected, by which the metal ions of the detection solution are reduced to metals by a material to be detected and are deposited as metallic nanoparticles, resulting in the change of the shape, size or pattern of the metallic nanoparticles, and the change in light transmittance caused thereby is measured to detect the presence or absence of the material and the concentration thereof.

Abstract: Disclosed herein is a method of fabricating nano-components using nanoplates, including the steps of: printing a grid on a substrate using photolithography and Electron Beam Lithography; spraying an aqueous solution dispersed with nanoplates onto the grid portion to position the nanoplates on the substrate; depositing a protective film of a predetermined thickness on the substrate and the nanoplates positioned on the substrate; ion-etching the nanoplates deposited with the protective film by using a Focused Ion Beam (FIB) or Electron Beam Lithography; and eliminating the protective film remaining on the substrate using a protective film remover after the ion-etching of the nanoplates, and a method of manufacturing nanomachines or nanostructures by transporting such nano-components using a nano probe and assembling with other nano-components.

Abstract: The present invention is related to a biosensor for detecting presence and concentration of various bio-materials such as genes and proteins by the electrical method, an interdigitated electrode sensor unit for forming the biosensor and a method for measuring concentration of a bio-material using the biosensor.

Abstract: This invention relates to a fabrication method of field emission device by using a carbon nano-tubes and, more particularly, to a fabrication method of field emission device by using the carbon nano-tubes, gathering much attention as a new material, as a field emission tips which have thin and stiff edges so that a threshold voltage required for emitting electron of the field emission device is to be lowered drastically. This invention provides a fabrication method of the field emission device using a thermally and chemically stable carbon nano-tubes, which have very stiff and nano-meter-thick edges, as a field emission tips so that the field emission device using the carbon nano-tubes as the tips, which have an excellent electron beam coherency, can emit electrons at a very low voltage and very stable during a long period.

Abstract: A linear motion apparatus for moving an object in a vacuum chamber comprising an antenna or a telescoping shaft such as a fishing rod to effectively utilize space, and to avoid the need of a rear projection thereby achieving stability.

Abstract: The present invention provides a method for forming a diamond selectively on the topmost part of a pointed tip by applying negative bias to the tip in a chemical vapor deposition system. High temperature tungsten filament is placed above the sharp tip, which is biased negatively to induce selective nucleation and growth of diamond on the topmost part of it.