Abstract: One embodiment of the present invention relates to a method of manufacturing polycrystalline silicon thin-film solar cell by a method of crystallizing a large-area amorphous silicon thin film using a linear electron beam, and the technical problem to be solved is to crystallize an amorphous silicon thin film, which is formed on a low-priced substrate, by means of an electron beam so as for same to easily be of high quality by having high crystallization yield and to be processed at a low temperature.

Abstract: A long fiber-reinforced thermoplastic resin composition having improved impact resistance, includes: (A) a long fiber reinforcement; (B) an ethylene-propylene copolymer; (C) a first thermoplastic elastomer; (D) a second thermoplastic elastomer; (E) a functional group-grafted modified polypropylene resin; and (F) an inorganic filler.

Abstract: The present invention is directed to a method of payment using a wireless Internet comprising the step of storing individual identification information provided from a user in an authentication server; authenticating the service server when request of the stored individual identification information is received from the service server, and transmitting the stored individual identification information to the service server when the authentication has succeeded; transmitting a message of requesting a service access to a mobile terminal of the user from the service server; and transmitting the individual identification information sent from the authentication server to the mobile terminal by means of a transmitting query of the individual identification information from the mobile terminal.

Abstract: The present invention provides a polypropylene resin composition in a mixture of a pellet (A) and a pellet (B), which is characterized by mixing them with various inorganic fillers and additives, wherein the pellet (A) comprises a long fiber-reinforced composite resin (a) obtained via a pultrusion impregnation process, and the pellet (B) comprises a composite resin (b) that includes polypropylene and thermoplastic elastomer. The polypropylene resin composition of the present invention can directly replace thermoplastic elastomer overmolding or painting in automotive parts to which such processes are routinely applied (e.g., interior components of the vehicle), which makes it possible to simplify and reduce the cost of the production process for such parts.

Abstract: Disclosed is a medical mask apparatus using optical fibers which can selectively project a laser beam to an entire treated portion or a local portion of skin. A medical mask apparatus using optical fibers for projecting a fine laser beam to the skin to activate skin cells and expedite circulation of blood in the skin includes: a laser light source generator for generating and supplying a laser beam having a predetermined wavelength band; a plurality of optical fibers branched from the laser light source generator; and a mask body having a cover portion having a predetermined area such that the cover portion covers a portion of a face and in which a portion of a distal end of the optical fiber is exposed along the entire cover.

Abstract: The present invention relates to the manufacture of a high capacity electrode by synthesizing an excellent Li2MnO3-based composite material Li(LixNiyCozMnwO2) to improve the characteristics of an inactive Li2MnO3 material with a specific capacity of about 460 mAh/g. Here, a manufacturing method of a cathode material for a lithium secondary battery uses a Li2MnO3-based composite material Li(LixNiyCozMnwO2) by reacting a starting material wherein a nickel nitrate solution, a manganese nitrate solution and a cobalt nitrate solution are mixed, with a complex agent by co-precipitation.

Abstract: The present invention is to provide individual and payment information to a service server by recognizing whether the service server is to be trusted when individual identification information provided by a user is received from the service server. So, the invention provides an authentication method of the service server and a payment method by using the same, which can prevent the individual identification information and payment from being accessed by a distrusted server in wireless Internet.

Abstract: The present invention is directed to a method of payment using a wireless Internet comprising the step of storing individual identification information provided from a user in an authentication server; authenticating the service server when request of the stored individual identification information is received from the service server, and transmitting the stored individual identification information to the service server when the authentication has succeeded; transmitting a message of requesting a service access to a mobile terminal of the user from the service server; and transmitting the individual identification information sent from the authentication server to the mobile terminal by means of a transmitting query of the individual identification information from the mobile terminal.

Abstract: The present invention relates to a device for displaying floor information of an operating elevator, which provides a user with information on the floor where an elevator car is positioned by operating the current position of the elevator car. The device is not electrically connected to an existing elevator driving system, so that the installation procedure of the display device is simple and easy. In addition, it is possible to realize integration even though every elevator employs protocols different from each other.

Abstract: A two step method for preparing a filler composition, the filler composition useful to prepare a nanocomposite polymer and an epoxy nanocomposite coating. First, disperse a water dispersible filler material in a liquid comprising water, but without any added intercalation agent, to form a dispersion. Second, replace at least a portion of the water of the liquid with an organic solvent so that the water concentration of the liquid is less than six percent by weight to form the filler composition, the average size of at least one dimension of the filler material being less than two hundred nanometers upon examination by transmission electron microscopy of a representative freeze dried sample of the dispersion of the first step. A nanocomposite polymer can be prepared by mixing the filler composition with one or more polymer, polymer component, monomer or prepolymer to produce a polymer containing the filler composition.

Abstract: A method for preparing a filler composition useful for preparing a nanocomposite polymer is provided. The method includes a first step of dispersing a water dispersible filler material in a liquid comprising water to form a dispersion and a second step of replacing at least a portion of the water of the liquid with an organic solvent. The resulting filler composition features a water concentration of the liquid of less than six percent by weight, and the average size of at least one dimension of the filler material is less than two hundred nanometers upon examination by transmission electron microscopy of a representative freeze dried sample of the dispersion of the first step. A nanocomposite polymer, particularly and epoxy resin composition, can be prepared by mixing the above-made filler composition with one or more polymer, polymer component, monomer or prepolymer.

Abstract: A two step method for preparing a filler composition, the filler composition useful to prepare a nanocomposite polymer. The first step is to disperse a water dispersible filler material in a liquid comprising water to form a dispersion. The second step is to replace at least a portion of the water of the liquid with an organic solvent to form the filler composition, the water concentration of the liquid of the filler composition being less than six percent by weight, the average size of at least one dimension of the filler material being less than two hundred nanometers upon examination by transmission electron microscopy of a representative freeze dried sample of the dispersion of the first step.

Abstract: The present invention is to provide individual and payment information to a service server by recognizing whether the service server is to be trusted when individual identification information provided by a user is received from the service server. So, the invention provides an authentication method of the service server and a payment method by using the same, which can prevent the individual identification information and payment from being accessed by a distrusted server in wireless Internet.

Abstract: Disclosed is an all-optical variable optical attenuator. The all-optical variable optical attenuator includes a nonlinear optical fiber where a pair of long-period gratings is formed in a pre-determined pattern. Alternatively, the variable optical attenuator may include a pair of optical fibers where a long-period grating is formed in each optical fiber in a pre-determined pattern to form a pair of long-period gratings on the whole, and a nonlinear optical fiber fusion-spliced between one ends of the respective optical fibers. The core layer of the nonlinear optical fiber contains semiconductor particles having a size of nanometers, a metallic particle having a size of nanometers, or a rare-earth element.

Abstract: A rotor for a line-start reluctance motor is provided to improve core area efficiency to make flux flow in one direction. The rotor for the line-start reluctance motor includes a core having an axis coupling hole in a coupling direction of a shaft, a plurality of bars formed in the periphery of the core, and a plurality of flux barriers, one and the other ends of the flux barriers approaching the bars formed in first and second areas facing each other at a predetermined angle on a central line of a first axis on a core plane vertical to the coupling direction, at least parts of the centers of the flux barriers passing through a third or fourth area between the first and second areas, surrounding the axis coupling hole at predetermined intervals.

Abstract: Disclosed is an all-optical variable optical attenuator. The all-optical variable optical attenuator includes a nonlinear optical fiber where a pair of long-period gratings is formed in a pre-determined pattern. Alternatively, the variable optical attenuator may include a pair of optical fibers where a long-period grating is formed in each optical fiber in a pre-determined pattern to form a pair of long-period gratings on the whole, and a nonlinear optical fiber fusion-spliced between one ends of the respective optical fibers. The core layer of the nonlinear optical fiber contains semiconductor particles having a size of nanometers, a metallic particle having a size of nanometers, or a rare-earth element.

Abstract: A chemical mechanical polishing apparatus includes a platen, a polishing pad affixed to a surface of the platen, and a polishing head configured to retain and rotate a wafer while pressing a surface of the rotating wafer against the polishing pad. A first portion of the polishing pad that engages the polishing head proximate the edge of the wafer provides less rigidity than a second portion of the polishing pad that engages a portion of the surface of the wafer. For example, the polishing pad and/or the platen may have a recess or other cushioning structure positioned proximate a locus of movement of a portion of the polishing head that supports the edge of the wafer.

Abstract: The present invention discloses a rotor for a line-start reluctance motor which improves core area efficiency to make flux flow in one direction. The rotor for the line-start reluctance motor includes a core having an axis coupling hole in a coupling direction of a shaft, a plurality of bars formed in the periphery of the core, and a plurality of flux barriers, one and the other ends of the flux barriers approaching the bars formed in first and second areas facing each other at a predetermined angle on a central line of a first axis on a core plane vertical to the coupling direction, at least parts of the centers of the flux barriers passing through a third or fourth area between the first and second areas, surrounding the axis coupling hole at predetermined intervals.

Abstract: A chemical mechanical polishing apparatus includes a platen, a polishing pad affixed to a surface of the platen, and a polishing head configured to retain and rotate a wafer while pressing a surface of the rotating wafer against the polishing pad. A first portion of the polishing pad that engages the polishing head proximate the edge of the wafer provides less rigidity than a second portion of the polishing pad that engages a portion of the surface of the wafer. For example, the polishing pad and/or the platen may have a recess or other cushioning structure positioned proximate a locus of movement of a portion of the polishing head that supports the edge of the wafer.