Abstract: Provided are a filter fabrication method and the filter formed thereby. In this method, a three-dimensional graphene polymer complex filter can be easily fabricated. By forming various patterns at a surface of a collector, patterns can be simply formed at a surface of a filter. This provides advantages at control of pressure difference which can be one of the very important factors necessary for designing and fabricating a filter. Since the filter includes graphene particles homogeneously combined to the polymer nanofiber, the filter can represent a superior antibiosis.

Abstract: A graphene electronic device includes a substrate, a first electrode and a second electrode provided on the substrate and spaced apart from each other, and graphene channels connecting the first electrode with the second electrode. Each of the graphene channels is separated from the substrate to have a cylindrical structure.

Abstract: A method of manufacturing a graphene oxide composite fiber includes forming a supporting fiber having positive charges thereon; forming a solution containing graphene oxide having a negative charge thereon to provide a graphene oxide-containing solution; coating the supporting fiber with the graphene oxide-containing solution; and permitting self-assembly of the graphene oxide of the graphene oxide -containing solution and the supporting fiber by an attraction between the positive and negative charges to form the graphene oxide composite fiber. The method may include coating the supporting fiber with a solution containing a material having an amine group to provide a positive surface charge on the supporting fiber. The method may include reducing the graphene oxide composite fiber to a graphene composite fiber, such as by one of a thermal reduction method, an optical reduction method, and a chemical reduction method.

Abstract: A graphene electronic device includes a substrate, a first electrode and a second electrode provided on the substrate and spaced apart from each other, and graphene channels connecting the first electrode with the second electrode. Each of the graphene channels is separated from the substrate to have a cylindrical structure.

Abstract: Provided are fiber fabrication method and the fiber fabricated thereby. In this method, different monomer solutions are electrospun through nozzles whose outlets are stuck to each other and simultaneously interfacially polymerized to form a polymer fiber without a complicated process of preparing a polymer solution. Therefore, a polymer fiber can be simply prepared.

Abstract: Plasma jet assemblies are provided. A plasma jet assembly may include: a tube through which a gas flows; a power source providing a high frequency power exciting the gas in plasma state; a power electrode applying the high frequency power to the gas; and a plasma control unit removing arc discharge of a plasma gas generated in the tube by the high frequency power applied to the power electrode.

Abstract: A method of fabricating a graphene electronic device includes (a) forming a first electrode and a second electrode spaced apart from each other, on a substrate; (b) forming supporting patterns on the first electrode and the second electrode; (c) coating the supporting patterns with graphene-oxide-containing solution to form composite patterns; and (d) separating the supporting patterns from the composite patterns. The step of forming supporting patterns may expose end portions of the first and second electrodes and the substrate between the end portions and be accomplished by providing a mask on the first and second electrodes; and electrospinning a polymer solution on the first and second electrodes with the mask. The supporting patterns may be composed of polymer fibers.

Abstract: Disclosed is a space perception device which includes a transceiver unit transmitting and receiving a signal; a processing unit analyzing signals transmitted and received through the transceiver unit to search location information of an obstacle at a space; and a vibration unit providing a user with location information of an obstacle at a space in response to a control of the processing unit. The vibration unit includes a plurality of vibrators having different three-dimensional coordinates.

Abstract: This invention relates to a method of manufacturing a graphene or graphene oxide/nanoparticle hybrid material and a graphene/nanoparticle hybrid material manufactured thereby, wherein the hybrid material can be easily, rapidly and eco-friendly synthesized while minimizing the use of chemicals and thermal treatment because of electrostatic self-assembly properties of a biomaterial. This method includes preparing nanoparticles, a biomaterial solution and a graphene oxide solution, mixing the nanoparticles with the biomaterial solution to form biomaterial-coated nanoparticles, mixing the biomaterial-coated nanoparticles with the graphene oxide solution to obtain a graphene oxide/nanoparticle hybrid material, and reducing the graphene oxide/nanoparticle hybrid material to obtain a graphene/nanoparticle hybrid material.

Abstract: Provided is a dissolved oxygen measurement system. The dissolved oxygen measurement system includes a hydrogen storage device storing hydrogen, a first hydrogen fuel cell in which the hydrogen stored in the hydrogen storage device and water supplied from the outside in real time react with each other to generate first electricity energy, a water storage tank storing the water supplied from the outside, a second hydrogen fuel cell in which the water supplied from the water storage tank and the hydrogen stored in the hydrogen storage device react with each other to generate second electricity energy, and a control unit analyzing a difference between the first electricity energy and the second electricity energy.

Abstract: Provided are a method of fabricating a graphene electronic device and the graphene electronic device fabricated thereby. The method may include forming a first electrode and a second electrode spaced apart from each other, on a substrate, forming supporting patterns on the first electrode and the second electrode, coating the supporting patterns with graphene-oxide-containing solution to form composite patterns, and separating the supporting patterns from the composite patterns.

Abstract: Methods of easily manufacturing a large-area graphene fiber are provided. The method includes forming a supporting fiber, forming a graphene oxide-containing solution, coating the supporting fiber with the graphene oxide-containing solution to form a graphene oxide composite fiber, and separating the supporting fiber from the graphene oxide composite fiber. The large-area graphene fiber having high strength, high flexibility, and high porosity is easily manufactured to be applied in various fields including an environment field and an energy field.

Abstract: Disclosed is a space perception device which includes a transceiver unit transmitting and receiving a signal; a processing unit analyzing signals transmitted and received through the transceiver unit to search location information of an obstacle at a space; and a vibration unit providing a user with location information of an obstacle at a space in response to a control of the processing unit. The vibration unit includes a plurality of vibrators having different three-dimensional coordinates.

Abstract: Plasma brushes are provided. The plasma brush includes a nozzle, a connector connected to a first end of the nozzle, a power electrode disposed at a portion of the nozzle, and a ground electrode disposed at a second end of the nozzle opposite to the connector.

Abstract: Plasma jet assemblies are provided. A plasma jet assembly may include: a tube through which a gas flows; a power source providing a high frequency power exciting the gas in plasma state; a power electrode applying the high frequency power to the gas; and a plasma control unit removing arc discharge of a plasma gas generated in the tube by the high frequency power applied to the power electrode.

Abstract: Provided are fiber fabrication method and the fiber fabricated thereby. In this method, different monomer solutions are electrospun through nozzles whose outlets are stuck to each other and simultaneously interfacially polymerized to form a polymer fiber without a complicated process of preparing a polymer solution. Therefore, a polymer fiber can be simply prepared.

Abstract: Provided are a filter fabrication method and the filter formed thereby. In this method, a three-dimensional graphene polymer complex filter can be easily fabricated. By forming various patterns at a surface of a collector, patterns can be simply formed at a surface of a filter. This provides advantages at control of pressure difference which can be one of the very important factors necessary for designing and fabricating a filter. Since the filter includes graphene particles homogeneously combined to the polymer nanofiber, the filter can represent a superior antibiosis.

Abstract: Provided are a solar cell and a method of fabricating the same. The solar cell may include a first electrode including a first substrate attached with a first transparent conductive film and a metal oxide nanotube provided on the first substrate and adsorbed with a dye, a second electrode facing the first electrode, and an electrolyte filling between the first and second electrodes. In example embodiments, metal nanoparticles may be provided on an inner surface of the metal oxide nanotube.

Abstract: Provided is a nanowire memory including a source and a drain corresponding to the source, and a nano channel formed to connect the source to the drain. Here, the nano channel includes a nanowire electrically connecting the source to the drain according to voltages of the source and drain, and a nanodot formed on the nanowire and having a plurality of potentials capturing charges. Thus, the nanowire memory has a simple structure, thereby simplifying a process. It can generate multi current levels by adjusting several energy states using gates, operate as a volatile or non-volatile memory by adjusting the gates and the energy level, and include another gate configured to adjust the energy level, resulting in formation of a hybrid structure of volatile and non-volatile memories.

Abstract: Provided is a chitosan spreading system using low temperature atmospheric pressure plasma.