Abstract: Provided is a method for preparing molybdenum oxide nanoparticles, including (a) preparing a precursor solution by dissolving a molybdenum salt in a first polar solvent, (b) generating an aerosol by applying ultrasonic waves to the precursor solution, and spraying the aerosol to a pre-heated reactor using a carrier gas, (c) obtaining molybdenum oxide micron-sized particles by pyrolyzing the aerosol, and (d) obtaining molybdenum oxide nanoparticles by dispersing the molybdenum oxide micron-sized particles in a second polar solvent and performing a solvothermal reduction reaction.

Abstract: Provided is a preparation method of copper nanostructures, characterized in that a copper precursor including halide is reacted with polyethyleneimine (PEI) and a reducing agent in an aqueous solution. According to this method, the copper nanostructures may be easily prepared in a sphere, wire, or plate form, and high-quality copper nanostructures may be produced with a high production yield of 90% or more. This method is also appropriate for large-scale production.

Abstract: The present invention relates to a method for preparing metal nanoparticles, specifically, by reducing a precursor of metal or metal oxide in an aqueous solution, wherein polyethylenimine and an additional reducing agent are used, thereby obtaining metal nanoparticles having superior properties in improved yield. According to the preparation method of the present invention, metal nanoparticles can be prepared at a higher concentration of metal precursor. Further, a short reaction time and the use of a solvent that is easy to handle, such as water, allow mass production of metal nanoparticles with high efficiency. Moreover, nanoparticles having a superior property can be prepared without a high-temperature treatment over 100° C. Accordingly, the method for preparing metal nanoparticles of the present invention may innovatively simplify the preparation processes, and may also improve the working environment. Thus, it is useful for mass production of metal nanoparticles.

Abstract: The present invention relates to a method for conducting deracemization using Taylor flow and a device for conducting the same. With respect to the deracemization of a racemate, it may be efficiently conducted with improved rapidity when a racemate-containing fluid is placed under Taylor flow.

Abstract: Provided is a preparation method of copper nanostructures, characterized in that a copper precursor including halide is reacted with polyethyleneimine (PEI) and a reducing agent in an aqueous solution. According to this method, the copper nanostructures may be easily prepared in a sphere, wire, or plate form, and high-quality copper nanostructures may be produced with a high production yield of 90% or more. This method is also appropriate for large-scale production.

Abstract: The present invention relates to a method for conducting deracemization using Taylor flow and a device for conducting the same. With respect to the deracemization of a racemate, it may be efficiently conducted with improved rapidity when a racemate-containing fluid is placed under Taylor flow.

Abstract: Provided is a method for preparing molybdenum oxide nanoparticles, including (a) preparing a precursor solution by dissolving a molybdenum salt in a first polar solvent, (b) generating an aerosol by applying ultrasonic waves to the precursor solution, and spraying the aerosol to a pre-heated reactor using a carrier gas, (c) obtaining molybdenum oxide micron-sized particles by pyrolyzing the aerosol, and (d) obtaining molybdenum oxide nanoparticles by dispersing the molybdenum oxide micron-sized particles in a second polar solvent and performing a solvothermal reduction reaction.

Abstract: The present invention relates to a method for preparing metal nanoparticles, specifically, by reducing a precursor of metal or metal oxide in an aqueous solution, wherein polyethylenimine and an additional reducing agent are used, thereby obtaining metal nanoparticles having superior properties in improved yield. According to the preparation method of the present invention, metal nanoparticles can be prepared at a higher concentration of metal precursor. Further, a short reaction time and the use of a solvent that is easy to handle, such as water, allow mass production of metal nanoparticles with high efficiency. Moreover, nanoparticles having a superior property can be prepared without a high-temperature treatment over 100° C. Accordingly, the method for preparing metal nanoparticles of the present invention may innovatively simplify the preparation processes, and may also improve the working environment. Thus, it is useful for mass production of metal nanoparticles.

Abstract: A semiconductor device includes a fuse transistor for fuse programming and a fuse block connected to the fuse transistor, wherein the fuse block comprises a fuse line and a heat spreading structure connected to the fuse line. The electrical fuse employs the heat spreading structure connected to the fuse line to prevent a rupture of the electrical fuse such that heat, which is generated in the fuse line during a blowing of the fuse line, is spread throughout the heat spreading structure. Thus, a sensing margin of the electrical fuse can be secured and a deterioration of devices adjacent to the electrical fuse by heat generated in the electrical fuse can be prevented.

Abstract: A method and apparatus to check an operation of a piezoelectric inkjet head includes a first current detection unit to detect a first current output from a piezoelectric element of the piezoelectric inkjet head when a predetermined voltage is applied, a second current detection unit to detect a second current from a capacitor having a capacitance with the same magnitude as a capacitor component of the piezoelectric element when the voltage is applied to the capacitor, and a third current detection unit to detect a third current corresponding to a difference between the first current and the second current, as the amount of deformation of the piezoelectric element according to the application of the voltage.

Abstract: An inkjet head assembly and a printing method using the same. The inkjet head assembly includes an ultraviolet (UV) emitting unit to emit UV light, and a printhead to move together with the UV emitting unit and to eject ink through nozzles using inkjet technology.

Abstract: A contents conversion communication terminal, a contents conversion supporting server system, and a contents conversion supporting method are provided. In a protocol structure of the communication terminal, a distribution file system layer supports a server system and at least one other communication terminal connected through a network to share a data file therebetween, an adaptation layer performs a contents conversion to use a data file in the communication terminal, the adaptation layer being placed on the distribution file system layer, and a virtual file system layer receives a system call message and transmits the system call message to the adaptation layer, the virtual file system layer being placed on the adaptation layer.

Abstract: Provided is an apparatus and method for certifying a hardware abstraction layer in a mobile terminal. The apparatus includes: a communication unit for receiving a predetermined test case from an external host certifying system and transmitting a test result of performing the received test cast to the host certifying system; an event receiver for receiving a test result of performing an event type test case from a hardware abstraction layer; and a controller for controlling the hardware abstraction layer to perform the test case received through the communication unit, and receiving the test result of performing the received test case received from the event receiver or the hardware abstraction layer and transmitting the received test result to the host certifying system.

Abstract: A semiconductor device includes a fuse transistor for fuse programming and a fuse block connected to the fuse transistor, wherein the fuse block comprises a fuse line and a heat spreading structure connected to the fuse line. The electrical fuse employs the heat spreading structure connected to the fuse line to prevent a rupture of the electrical fuse such that heat, which is generated in the fuse line during a blowing of the fuse line, is spread throughout the heat spreading structure. Thus, a sensing margin of the electrical fuse can be secured and a deterioration of devices adjacent to the electrical fuse by heat generated in the electrical fuse can be prevented.

Abstract: An inkjet head assembly and a printing method using the same. The inkjet head assembly includes an ultraviolet (UV) emitting unit to emit UV light, and a printhead to move together with the UV emitting unit and to eject ink through nozzles using inkjet technology.

Abstract: A semiconductor device having a dual gate electrode and a method of forming the same are provided. The semiconductor device includes a substrate including first and second regions. A first gate electrode formed of a first metal silicide is disposed on the substrate of the first region. A second gate electrode is disposed on the substrate of the second region. The second gate electrode is formed of a second metal silicide including a metal the same as that of the first metal silicide. A gate insulating layer is interposed between the substrate and the first gate electrode, and between the substrate and the second gate electrode. The gate insulating layer brings about a Fermi pinning effect increasing or decreasing intrinsic work functions of the first and second metal silicides.

Abstract: An apparatus and method of forming a pattern using an inkjet printing method and nano imprinting method. The method includes partially inkjet printing a material for forming the pattern on a surface of the substrate using an inkjet head, and forming a predetermined pattern by imprinting the inkjet printed material on the surface of the substrate using an imprint mold. The method also includes partially inkjet printing a material for forming the pattern in an imprint mold using an inkjet head, and forming a predetermined pattern by imprinting the material on a surface of the substrate using the imprint mold. During the partial inkjet printing, at least two materials that are different from each other are inkjet printed on different locations of the surface of the substrate.

Abstract: A method and apparatus to check an operation of a piezoelectric inkjet head includes a first current detection unit to detect a first current output from a piezoelectric element of the piezoelectric inkjet head when a predetermined voltage is applied, a second current detection unit to detect a second current from a capacitor having a capacitance with the same magnitude as a capacitor component of the piezoelectric element when the voltage is applied to the capacitor, and a third current detection unit to detect a third current corresponding to a difference between the first current and the second current, as the amount of deformation of the piezoelectric element according to the application of the voltage.

Abstract: A method of fabricating a color filter using an ink-jet technique. The method includes inclining an ink-jet head having a plurality of nozzles at a predetermined angle, moving the ink-jet head in a lengthwise direction of the color filter that is divided into a plurality of working regions, ejecting color ink into a plurality of pixels, moving the ink-jet head to another adjacent working region after work in a predetermined working region is completed, and ejecting color ink, wherein the ink-jet head passes over a working region in which all of the nozzles of the ink-jet head operate and color ink is ejected through each of the nozzles and when the ink-jet head leaves the working region so that color ink is ejected into the pixels by less than all of the plurality of nozzles, all of the nozzles continue to operate.

Abstract: An apparatus and method of printing for use in an inkjet printer includes vibrating, while moving an inkjet printhead from a standby position to a printing position, a meniscus of ink in a nozzle by applying an auxiliary pulse having a size not large enough to generate ink ejection to an actuator which provides driving force for ink ejection, and printing by applying a main pulse for ejecting ink when the inkjet printhead arrives at the printing position. Accordingly, ink can be ejected stably.