Abstract: There are provided an apparatus for fixing a plastic sheet which fixes a plastic sheet to fabricate a nano pattern and a method of fabricating a nano pattern on a plastic sheet using the same. The apparatus for fixing a plastic sheet includes: a pair of planar metal guide rings interposingly fixing a plastic sheet from above and below, respectively; and a sheet fixing chuck including: a ring fixer sucking the pair of planar metal guide rings through a vacuum groove to be fixed thereto; and a sheet fixer having a plurality of vacuum pin holes formed therein, the vacuum pin holes sucking a bottom of the plastic sheet fixed by the planar metal guide rings. The apparatus allows fabrication of the nano pattern on the plastic sheet having less roughness than that of a semiconductor substrate or a glass substrate.

Abstract: A silicon biosensor and a method of manufacturing the same are provided. The silicon biosensor includes: a light emitting layer emitting light according to injected electrons and holes and changing a wavelength of the light depending on whether a biomaterial is absorbed by the light emitting layer; an electron injection layer injecting the electrons into the light emitting layer; and a hole injection layer injecting the holes into the light emitting layer. Accordingly, it is possible to produce low price biosensors in large quantities.

Abstract: There is provided a portable measuring system having a biophotonic sensor. The portable measuring system also includes a tunable light source, an output intensity detector and an output wavelength detector, which are mounted therein. The portable measuring system can precisely measure a variation in the reflectivity spectrum and/or the transmittance spectrum of the biophotonic sensor before and after an antigen-antibody reaction by varying the wavelength of the tunable light source. Thus, the concentration of the antigen is precisely measured.

Abstract: There is provided a method for immobilizing a bio-material on a surface of titanium dioxide nanoparticles (TiO2) as a highly reflective material to enhance sensitivity of a resonant reflection biosensor. The method for immobilizing a bio-material may be useful to easily immobilize bio-materials such as proteins, DNA, RNA and enzymes on surfaces of titanium dioxide (TiO2) nanoparticles using the chemical reaction, and significantly improve sensitivity of a resonant reflection biosensor by determining the antigen-antibody reaction in the resonant reflection biosensor using the immobilized secondary antien.

Abstract: Provided is a semiconductor light emitting diode, in which a plurality of upper electrodes is formed on a surface of an upper doping layer or an emission layer and at least one lower electrode is formed on a surface of a lower doping layer or a substrate in a silicon-based light emitting diode or a nitride-based light emitting diode to enhance a spreading characteristic of current applied to the electrodes, thereby maximizing an emitting area of the emission layer and inducing an emission having a uniform intensity on an entire surface of the emission layer to further enhance the luminous efficiency of the light emitting diode.

Abstract: Due to the indirect transition characteristic of silicon semiconductors, the light extraction efficiency of a silicon-based light emitting diode is lower than that of a compound semiconductor-based light emitting diode. For this reason, there are difficulties in practically using and commercializing silicon-based light emitting diodes developed so far.

Abstract: Provided is a liquid sample analysis chip reading system. The reading system includes an analysis chip, a light emitting part, a plurality of light wave-guides, and a light receiving part. The analysis chip includes a plurality of detecting parts. The light emitting part includes three light sources emitting light having wavelengths (or colors) different from each other. The plurality of light wave-guides irradiate the light emitted from the light emitting part onto the plurality of corresponding detecting parts, respectively. The light receiving part includes a plurality of light receiving devices for receiving the light having a specific color reflected from each of the plurality of corresponding detecting parts of the analysis chip. The three light sources are discontinuously controlled to emit light onto the plurality of light wave-guides.

Abstract: Provided is a measurement device. The measurement device includes a sensor, a wavelength-tunable light source, an additional light source, a coupler, and an optical power measurer. The sensor accepts a sample. The wavelength-tunable light source irradiates wavelength-tunable light to detect a reaction of the sensor. The additional light source irradiates wavelength-fixed light to detect an initial time of the reaction. The coupler combines the wavelength-tunable light source and the additional light source and irradiates the combined input light on the sensor. The optical power measurer detects the reaction of the sensor from an output light transmitted through or reflected by the sensor.

Abstract: Provided is a disposable diagnostic kit capable of diagnosing diseases. The disposable diagnostic kit includes a preprocessor, a target material reactor, and a microfluidic channel. The preprocessor filters target materials from a fluid containing various biomaterials. The target material reactor includes a diffraction grating on whose surface sensing materials reacting with the target materials are immobilized. Herein, a wavelength of light penetrated into the diffraction grating or a wavelength of light reflected by the diffraction grating varies depending on the target materials. The microfluidic channel moves the filtered fluid from the preprocessor to the target material reactor.

Abstract: Provided are an apparatus and method for detecting biomaterials. The apparatus for detecting the biomaterials includes a light source unit, a biomaterial reacting unit, and a detection unit detecting. The light source unit provides incident light. The biomaterial reacting unit includes a substrate and metal nanoparticles spaced from the substrate. The surface plasmon resonance phenomenon is induced on surfaces of the metal nanoparticles by the incident light. First detecting molecules specifically binding to target molecules are immobilized to the surfaces of the metal nanoparticles. The detection unit detects a resonance wavelength of emission light emitted from the metal nanoparticles by the surface plasmon resonance phenomenon.

Abstract: Provided are a biosensor and a method for detecting biomolecules by using the biosensor. The biosensor includes a detection unit and a fluid channel. The detection unit is disposed on a substrate and has a surface to which detection target molecules binding specifically to probe molecules are immobilized. The fluid channel is configured to provide an analysis solution containing the probe molecules to the detection target molecules. The probe molecules bind specifically to the target molecules and the detection target molecules.

Abstract: A biosensor reader and a biosensor reader system are provided. The biosensor reader has a field-effect transistor (FET) biosensor attached thereto, and the FET biosensor includes between electrodes a probe channel to which probe materials are immobilized. The biosensor reader analyzes an electrical conductivity change of the probe channel caused by the binding between the probe material and a target material contained in an analysis solution. The biosensor reader includes a measurement module and an output module. The measurement module connects the probe channel electrically to a reference resistance with a fixed resistance value by the attachment of the FET biosensor, measures a reference voltage drop across the reference resistance and a channel voltage drop across the probe channel, and analyzes an electrical conductivity change of the probe channel from the reference voltage drop and the channel voltage drop.

Abstract: Provided is a bio-sensor chip. The bio-sensor chip includes a sensing part, a board circuit part, a channel part, and a cover. In the sensing part, a target material and a detection material interact with each other to detect the target material. The board circuit part is electrically connected to the sensing part. The channel part provides a solution material containing the target material into the sensing part. The cover is coupled to the board circuit part to cover the channel part and the sensing part.

Abstract: Provided is an apparatus for detecting bio materials and a method for detecting bio materials by using the apparatus. The apparatus includes a bio material reacting unit, an optical source unit, and a detecting unit. The bio material reacting unit includes bio sensing materials immobilized on gold nanoparticles. The optical source unit emits light toward the bio material reacting unit. The detecting unit measures variations of surface absorbance of the gold nanoparticles by detecting light transmitted through the bio material reacting unit before and after a bio material is bound to the bio sensing materials.

Abstract: Provided is a portable optical biosensor measuring apparatus. The portable optical biosensor measuring apparatus includes a light emitting unit emitting a light having a first line width, an optical biosensor receiving an output light from the light emitting unit, and a peak wavelength detector detecting one peak wavelength having a second line width from a light from the optical biosensor. The first line width is greater than the second line width, and the optical biosensor provides the peak wavelength according to an antigen-antibody reaction.

Abstract: Provided is a method of immobilizing an active material on a surface of a substrate. The method including cleaning a substrate, functionalizing a surface of the substrate using a hydroxyl group, functionalizing the surface of the substrate at atmospheric pressure using a vaporized organic silane compound, and immobilizing an active material to an end of the surface of the substrate. Therefore, since evacuation or the use of carrier gas is not necessary, a uniform, high-density, single-molecular, silane compound film can be formed inexpensively, simply, and reproducibly, and an active material can be immobilized to the single-molecular silane compound film.

Abstract: Provided are a method of manufacturing a semiconductor nanowire sensor device and a semiconductor nanowire sensor device manufactured according to the method. The method includes preparing a first conductive type single crystal semiconductor substrate, forming a line-shaped first conductive type single crystal pattern from the first conductive type single crystal semiconductor substrate, forming second conductive type epitaxial patterns on both sidewalls of the first conductive type single crystal pattern, and forming source and drain electrodes at both ends of the second conductive type epitaxial patterns.

Abstract: Provided is a highly efficient silicon-based light emitting diode (LED) including a Distributed Bragg Reflector (DBR), an n-type doping layer, and a p-type substrate structure. The silicon-based LED includes: a substrate having a p-type mesa substrate structure; an active layer that is formed on the substrate and has a first surface and a second surface opposite the first surface; a first reflective layer facing the first surface of the active layer; a second reflective layer that is located on either side of the p-type substrate structure and faces the second surface of the active layer; an n-type doping layer sandwiched between the active layer and the first reflective layer; a first electrode electrically connected to the n-type doping layer; and a second electrode electrically connected to the p-type substrate structure.

Abstract: Provided are a silicon nitride layer for a light emitting device, light emitting device using the same, and method of forming the silicon nitride layer for the light emitting device. The silicon nitride layer of the light emitting device includes a silicon nitride matrix and silicon nanocrystals formed in the silicon nitride matrix. A light emitting device manufactured by the silicon nitride layer has a good luminous efficiency and emits light in the visible region including the short-wavelength blue/violet region and the near infrared region.

Abstract: Provided is a semiconductor light emitting diode that uses a silicon nano dot and a method of manufacturing the same. The semiconductor light emitting diode includes a light emitting layer that emits light; a hole injection layer formed on the light emitting layer; an electron injection layer formed on the light emitting layer to face the hole injection layer; a metal layer that includes a metal nano dot and is formed on the electron injection layer; and a transparent conductive electrode formed on the metal layer. Amorphous silicon nitride that includes the silicon nano dot is used as the light emitting layer.