Korea Electrotechnology Research Institute Patent applications |
Patent application number | Title | Published |
20150372212 | TE-BASED THERMOELECTRIC MATERIAL HAVING COMPLEX CRYSTAL STRUCTURE BY ADDITION OF INTERSTITIAL DOPANT - This invention relates to a Te-based thermoelectric material having stacking faults by addition of an interstitial dopant, including unit cells configured such that A-B-A-C-A elements are stacked to five layers, in which A element of a terminal of a unit cell and A element of a terminal of another unit cell are repeatedly stacked by a van der Waals interaction, wherein an interstitial element as the dopant is located at an interstitial position between the repeatedly stacked A elements adjacent to each other, thus generating stacking faults of the repeatedly stacked unit cells to thereby form a twin as well as a complex crystal structure different from the unit cells (where A is Te or Se, B is Bi or Sb, and C is Bi or Sb). | 12-24-2015 |
20150302983 | WIRELESS POWER TRANSMISSION SYSTEM FOR FREE-POSITION WIRELESS CHARGING OF MULTIPLE DEVICES - The present invention relates to a near-field wireless power transfer system capable of having a constant efficiency regardless of a charging position of a receiver by only using a simple impedance matching circuit without using a separate existing complex adaptive impedance matching circuit or control circuit, and simultaneously transmitting power without having difficulty with impedance matching even for wireless power transmission to a plurality of electronic devices by applying a structure having a uniform mutual inductance between a wireless power transmitter and receiver. | 10-22-2015 |
20150248952 | HIGH-TEMPERATURE SUPERCONDUCTING WIRE MATERIAL - A high-temperature superconducting wire material comprising: a pre-superconducting wire material layer formed by forcibly removing a metal substrate from a superconducting wire material formed by including the metal substrate, a buffer layer formed on the upper surface of the metal substrate and a superconducting conductive layer formed on the upper surface of the buffer layer; a silver (Ag) protective layer formed on the lower surface of the pre-superconducting wire material layer; and a copper (Cu) protective layer formed on the lower surface of the Ag protective layer. Since a superconducting wire material is formed by stripping a metal substrate of a second-generation high-temperature superconducting wire material and forming a metal protective layer, advantages include the reduction of a magnetization loss due to the magnetism of the substrate, excellent stability of the wire material, and increases in Je (engineering current density) due to the minimization of the thickness of the superconducting wire material. | 09-03-2015 |
20150201840 | REFLECTION DETECTION TYPE MEASUREMENT APPARATUS FOR SKIN AUTOFLUORESCENCE - Provided is a reflection detection type measurement apparatus for skin fluorescence. The apparatus includes: a first light source irradiating excitation light on a measurement target; a second light source irradiating light of a wavelength different from that of light from the first light source on the measurement target; a first optical detector detecting a reflected light generated from the measurement target due to the excitation light of the first light source; and a second optical detector detecting a skin fluorescence generated from the measurement target due to the excitation light of the first light source, and detecting a reflected light generated from the measurement target due to the excitation light of the second light source. The first optical detector is disposed in an area other than a total reflection area to which the excitation light of the first light source is reflected after irradiating to the measurement target. | 07-23-2015 |
20150201839 | REFLECTION DETECTION TYPE MEASUREMENT APPARATUS AND METHOD FOR SKIN AUTOFLUORESCENCE - Provided is a reflection detection type measurement method for skin fluorescence. The method includes: irradiating excitation light on a measurement target; detecting a reflected light and a skin fluorescence generated from the measurement target due to the excitation light; irradiating light with a wavelength range of the skin fluorescence on the measurement target; detecting a reflected light generated from the measurement target due to the light with a wavelength range of the skin fluorescence; and calculating a skin fluorescence value of the measurement target by correcting a calculation based on the detected reflected light and skin fluorescence. | 07-23-2015 |
20150008401 | ELECTRONIC DEVICE AND METHOD OF FABRICATING THE SAME - Provided are an electronic device and a fabrication method thereof. The electronic device according to the concept of the present invention includes auxiliary interconnections disposed on a substrate, a light extraction layer that is provided on the substrate and fills between the auxiliary interconnection, and a first electrode provided on the auxiliary interconnections and the light extraction layer, wherein the light extraction layer may have a first surface facing the substrate and a second surface opposite to the first surface, the first surface may have protrusions, and the auxiliary interconnections may include a material having a lower resistance than the first electrode. Since electrical properties of the electronic device are improved, uniform light emission characteristics may be realized. | 01-08-2015 |
20140368175 | HIGH PRECISION DC TO DC CONVERTER WITH WIDE LOAD RANGE AND GATE DRIVE CIRCUIT FOR USE THEREIN - A high precision DC/DC resonant converter with a wide load range includes a first switch leg having one end connected to an anode terminal of a DC power source and the other connected to a cathode terminal of the DC power source to independently operate at a switching frequency used in an application of an output voltage for no load or a light load equal to or less than a rated load; and one or more second switch legs having one end connected to the anode terminal of the DC power source and the other end connected to the cathode terminal of the DC power source to operate at a switching frequency for the rated load or a frequency equal to or less than the switching frequency used in the application of the output voltage for no load or the light load that the first switch leg takes charge of. | 12-18-2014 |
20140212672 | ONE-DIMENSIONAL CONDUCTIVE NANOMATERIAL-BASED CONDUCTIVE FILM HAVING THE CONDUCTIVITY THEREOF ENHANCED BY A TWO-DIMENSIONAL NANOMATERIAL - A one-dimensional conductive nanomaterial-based conductive film having the conductivity thereof enhanced by a two-dimensional nanomaterial in which the conductive film includes a substrate, a one-dimensional conductive nanomaterial layer formed on the substrate, and a two-dimensional nanomaterial layer formed on the one-dimensional conductive nanomaterial layer, wherein the one-dimensional conductive nanomaterial layer includes a one-dimensional conductive nanomaterial formed of at least one selected from a carbon nanotube, a metal nanowire, and a metal nanorod, and the two-dimensional nanomaterial layer includes a two-dimensional nanomaterial formed of at least one selected from graphene, boron nitride, tungsten oxide (WO3), molybdenum sulfide (MoS2), molybdenum telluride (MoTe2), niobium diselenide (NbSe2), tantalum diselenide (TaSe2), and manganese dioxide (MnO2). A two-dimensional nanomaterial, such as graphene may be stacked on a one-dimensional conductive nanomaterial such as a carbon nanotube or a metal nanowire to enhance the conductivity of the one-dimensional conductive nanomaterial film. | 07-31-2014 |
20140146571 | PULSED POWER GENERATOR - An active voltage drop control-type pulse power generator includes power stages, a power inverter, a power loop, a control inverter, a control loop, and a compensation unit. The power stages include power cells connected in series. Each power cell includes a switch and a capacitor connected in series, a driver for driving the switch, a bypass diode connected to both ends of the switch, and a rectifying diode connected to both ends of the capacitor. The power inverter charges the capacitor via the power loop and the rectifying diode inside each power cell. The control inverter provides a control signal for the switch via the control loop and the driver inside each power cell. The compensation unit is connected to one of the power cells and generates a compensation voltage for compensating for a voltage drop at a load according to a voltage detected in real-time from the power cell. | 05-29-2014 |
20140097763 | APPARATUS FOR CONTROLLING THE OPERATION OF AN LED, AND METHOD FOR CONTROLLING DRIVE CURRENT THEREOF - The present invention relates to an apparatus for controlling the operation of an LED and to a method for controlling the drive current thereof. More particularly, the present invention relates to an apparatus for controlling the operation of an LED, which is capable of driving a direct current-operated LED module or an alternating current-operated LED module using alternating current power, and to a method for controlling the drive current of the apparatus. According to the present invention, the drive current of an LED array can be output in the form of a sine wave by a constant-current regulation or constant-power regulation even when input voltage varies, thus suppressing harmonics, improving the power factor, minimizing flicker, and preventing a temperature increase in the LED array and in an LED operation control circuit. | 04-10-2014 |
20140076385 | FLEXIBLE DYE-SENSITIZED SOLAR CELL USING FIBER - A flexible dye-sensitized solar cell includes: a fiber layer formed of nanofibers; a conductive electrode layer formed on one side of the fiber layer; a photoelectrode layer formed on the conductive electrode layer; a counter electrode layer formed on the other side of the fiber layer; a sealing member for enclosing the fiber layer, the conductive electrode layer, the counter electrode layer and the photoelectrode layer therein so as to seal said layers from the outside; and an electrolyte infiltrated into the fiber layer. A cell body in which an electrode and a photoelectrode are formed on one surface of the fiber that contains an electrolyte therein and a counter electrode is formed on the other side of the fiber is sealed with a polymer film, thus forming a flexible solar cell having an excellent sealing structure for preventing the electrolyte from leaking out of the cell even when pressure is externally applied. | 03-20-2014 |
20140076200 | METHOD FOR MANUFACTURING HYBRID PACKAGING MATERIAL - Disclosed herein is a method of manufacturing a hybrid packaging material, comprising the steps of: (a) forming a colloidal inorganic nanosol; (b) surface-treating the inorganic nanosol of step (a) with an organic metal alkoxide containing an organic function group by stirring the inorganic nanosol together with the organic metal alkoxide; (c) replacing a solvent of the inorganic nanosol with an organic solvent different in type from the solvent to prepare an organic solvent-type inorganic nanosol; (d) substituting the organic solvent of the inorganic nanosol of step (c) with a functional organic monomer or a silicon compound, followed by concentration to prepare a solvent-free organic-inorganic hybrid material; and (e) adding a nanoclay dispersed in a solvent to the solvent-free organic-inorganic hybrid material. | 03-20-2014 |
20140051925 | FILTER SWITCHING DEVICE FOR FLUORESCENCE ENDOSCOPIC TELEVISION CAMERA SYSTEM - The present invention relates to a filter switching device for a fluorescence endoscopic television camera system, and more particularly, to a filter switching device for a fluorescence endoscopic television camera system, which selectively transmits light to a detector sensor of a television camera according to the white light condition or the fluorescence condition to diagnose patients using a fluorescence endoscope. | 02-20-2014 |
20140046409 | LIGHT SOURCE APPARATUS FOR PHOTO-DIAGNOSIS AND PHOTOTHERAPY - Disclosed herein is a light source apparatus for photo-diagnosis and phototherapy. The light source apparatus includes a first light source, a second light source, a light-guide, an interference filter, and a compensation filter. The first light source is non-coherent, and the second light source is coherent. The light-guide delivers light emitted from the first light source and the second light source. The interference filter is disposed on an optical path of the first light source. The compensation filter is disposed between the first light source and the light-guide, and compensates for an output spectrum of the first light source and converts the output spectrum of the first light source into a predetermined reference output spectrum. Here, the light emitted from the second light source is reflected by the interference filter to be incident to the light-guide and the light from the first light source passes through the interference filter at the same time. | 02-13-2014 |
20140037051 | Apparatus and Method for Diagnosing Lesions - Disclosed is an apparatus and a method for diagnosing lesions. More specifically, the present invention relates to an apparatus and a method for diagnosing lesions capable of precisely diagnosing lesions such as breast cancer by digital breast tomosynthesis (DBT). The present invention enables the improvement of lesion diagnosis accuracy and early diagnosis rates. | 02-06-2014 |
20140035393 | DOUBLY SALIENT PERMANENT MAGNET ELECTRIC MACHINE - Disclosed herein is a linear, curved or rotary electric machine. The electric machine includes first and second movers which are adjacent to each other and have a phase angle difference of 60° therebetween. The first mover includes phases U, V and W and the second mover includes phases /U, /V and /W. The electric machine of the present invention can reduce pulsations of thrust caused by end effect. In particular, in the case where the stator includes permanent magnets having the same poles and salient poles which alternate with the permanent magnets, the number of permanent magnets used can be reduced to half of that of a conventional linear electric machine. | 02-06-2014 |
20130336345 | FEMTOSECOND LASER APPARATUS AND FEMTOSECOND LASER SYSTEM INCLUDING THE SAME - There is disclosed a femtosecond laser apparatus including a first laser material comprising Ng, Np and Nm axes spatially perpendicular to each other; a second laser material comprising Np axis, Nm axis and Ng axis; and a first laser diode and second laser diodes, wherein the traveling direction of laser beams generated from the first and second laser materials is substantially parallel to Ng axis of the first laser material and the polarizing direction of laser beams generated from the first and second laser materials is substantially parallel to Np axis of the first laser material, and the traveling direction of laser beams generated from the first and second laser materials is substantially parallel to Np axis of the second material and the polarizing direction of laser beams generated from the first and second laser materials is substantially parallel to Nm axis of the second laser material. | 12-19-2013 |
20130281865 | TRANSMITTED LIGHT DETECTION TYPE MEASUREMENT APPARATUS FOR SKIN AUTOFLUORESCENCE - The present invention provides a transmitted light detection type measurement apparatus for skin fluorescence, which is configured to perform light irradiation and light detection on a reference sample and a measurement target. The apparatus includes a first light source, a second light source, a first optical detector and a second optical detector, a light source switching controller, and an operator. | 10-24-2013 |
20130253338 | REFLECTION DETECTION TYPE MEASUREMENT APPARATUS FOR SKIN AUTOFLUORESCENCE - The present invention provides a reflection detection type measurement apparatus for skin fluorescence, which is configured to perform light irradiation and light detection on a reference sample and a measurement target. | 09-26-2013 |
20130241774 | WIRELESS POSITIONING SERVER USING CLOCK OFFSET CALIBRATION AND WIRELESS POSITIONING METHOD USING THE SAME - A wireless positioning server using clock offset compensation and a wireless positioning method using the same. The wireless positioning server using clock offset compensation estimates a precise position of a tag requiring position information by effectively predicting information regarding a distance between a beacon for performing positioning and the tag requiring position information. An error in the positioning estimation result due to a clock offset is minimized by measuring a relative clock frequency ratio between beacons and by compensating for clock frequencies of the beacons when a distance between a beacon and a tag is estimated. | 09-19-2013 |
20130223470 | APPARATUS FOR FEMTOSECOND LASER OPTICALLY PUMPED BY LASER DIODE PUMPING MODULE - There is disclosed an apparatus for femtosecond laser optically pumped by a laser diode pumping module that is able to mechanically couple optical mounts for mounting optical mounts to each other by using a bar with a low thermal expansion coefficient and to form a light pumping module distant from a laser platform or a case, to provide a stable mode locking for an ultrashort laser and to enhance a power stability and a beam stability. | 08-29-2013 |
20130120732 | CYLINDRICAL MAGNETIC LEVITATION STAGE AND LITHOGRAPHY - The present invention provides a cylindrical magnetic levitation stage and an exposure apparatus, which can form a nanoscale pattern of a large area directly on the surface of a large cylinder. The present invention provides an exposure apparatus including a new type of cylindrical magnetic levitation stage, which can levitate, rotate, and move a cylinder in the axial direction by the principle of magnetic levitation in a non-contact manner and form a nanoscale pattern on the surface of the cylinder, and a light source for irradiating light on the surface of the cylinder, thereby reducing the position error of the cylindrical magnetic levitation stage to a nanoscale size and correcting the error caused by mechanical processing in real time. Moreover, the present invention provides an exposure apparatus, which includes a differential vacuum means combined with the cylindrical magnetic levitation stage to create a partial vacuum environment between the light source and the surface of the cylinder, and thus it is possible to employ light sources such as X-rays, electron beams, extreme ultraviolet (EUV) rays, etc. | 05-16-2013 |
20130076159 | WINDING CONFIGURATION OF DOUBLY SALIENT PERMANENT MAGNET ELECTRIC MACHINE - The present invention relates to a doubly salient permanent magnet electric machine that has a winding structure in which series-connected windings are included in the phase windings of a mover, and that has a stator implemented as an iron core having a plurality of permanent magnets and a plurality of stator salient poles neighboring the permanent magnets, thus reducing the number of permanent magnets by half. An electric machine is configured such that a mover moves while facing a stator and includes an N (a number of power phases) multiple number of teeth and phase windings wound around the teeth, and one or more pairs of phase windings of the mover mutually having a phase difference of 180° are connected in series, and the stator includes permanent magnets in depressions between individual stator salient poles of an iron core in which the stator salient poles are formed. | 03-28-2013 |
20130015073 | NANOPOROUS OXIDE CERAMIC MEMBRANES OF TUBULAR AND HOLLOW FIBER SHAPE AND METHOD OF MAKING THE SAME - The present invention is aimed to fabricate nanoporous anodic oxide ceramic membrane tubes with excellent pore characteristics by anodizing metal tubes located in a cylindrical symmetry with respect to a cathode which itself has a cylindrical symmetry. The membrane tubes may have protruded portions acting as supports and joints. The present invention also deals with stacks and bundles consisted of numbers of the anodic oxide ceramic tubes for filter and dialysis applications. | 01-17-2013 |
20120286584 | SPACE-ADAPTIVE WIRELESS POWER TRANSFER SYSTEM AND METHOD USING EVANESCENT FIELD RESONANCE - A magnetic resonance wireless power transfer method according to an aspect of the present invention includes transmitting power from a source coil to the Tx resonant coil using a magnetic induction method, transmitting the power from the Tx resonant coil to an Rx resonant coil, having a resonant frequency identical with that of the Tx resonant coil, via magnetically-coupled resonance, and transmitting the power from the Rx resonant coil to the device coil of an electronic device using the magnetic induction method. The Tx resonant coil and the Rx resonant coil are arranged at a right angle or a specific angle of inclination relative to each other. | 11-15-2012 |
20120283105 | Superconducting Strip Having Metal Coating Layer and Method Of Manufacturing the Same - A rolled superconducting article includes: a cylindrical bobbin having a post in a cylindrical shape; a superconducting strip wound on the cylindrical bobbin in a rolled shape with a predetermined tension applied, wherein the superconducting strip is formed of a superconducting thin film, which is coated with a metal coating layer on a facing surface of the superconducting thin film, and a stabilizing substrate wound on the superconducting strip, wherein the stabilizing substrate is coated with a metal coating layer on a facing surface of the stabilizing substrate; an anti-bonding substrate wound on an outer surface of the stabilizing substrate with a predetermined tension applied; wherein the superconducting thin film is thermally adhered to the stabilizing substrate by heat-treating the rolled superconducting strip with the anti-bonding substrate wound therearound. | 11-08-2012 |
20120252680 | HIGH-TEMPERATURE SUPERCONDUCTING TAPE - Disclosed herein is a high-temperature superconducting tape, including: a substrate; a buffer layer formed on the substrate; and a high-temperature superconducting layer formed on the buffer layer, wherein the substrate is made of SUS310s or stainless steel containing 0.01-1% of silicon (Si) and 1-5% of molybdenum (Mo) and has an average metal crystal grain size of 12 μm or less, and the high-temperature superconducting layer is made of a ReBCO (ReBa | 10-04-2012 |
20120222952 | PLASMA IMMERSION ION MILLING APPARATUS AND METHOD - Disclosed is an apparatus and method for low-temperature plasma immersion processing of a variety of workpieces using accelerated ions, wherein low-temperature plasma is distributed around a cylindrical workpiece placed in a chamber, the workpiece is enclosed with a housing including a multi-slot extracting electrode to isolate the workpiece from plasma, and a negative potential sufficient to induce sputtering is applied to the workpiece and the electrode, so that ions from plasma are accelerated within the sheath formed between the extracting electrode and plasma, pass through the slot part of the electrode and bombard the workpiece, thus polishing the surface of the workpiece. This apparatus and method is effective for surface smoothing to ones of nm of large cylindrical substrates particularly substrates for micro or nanopattern transfer. This method includes plasma cleaning, surface activating, surface smoothing, dry etching, deposition, plasma immersion ion implantation and deposition within a single or multi chamber. | 09-06-2012 |
20120140373 | APPARATUS AND METHOD FOR GENERATING ELECTRIC DISCHARGE IN LIQUID USING GAS JET - The present invention provides an apparatus and method for generating an electric discharge in a liquid using a gas jet, in which a gas channel is formed between conductive members in a liquid using high pressure gas jet injection to reduce a discharge voltage in the liquid to a level similar to that in air, thus facilitating the electric discharge in the liquid. | 06-07-2012 |
20120112708 | Control Device for Doubly-Fed Induction Generator in Which Feedback Linearization Method is Embedded - The present invention relates to a control device for a doubly-fed induction generator in which a feedback linearization method is enabled and further provides a control device for a doubly-fed induction generator in which a feedback linearization method is embedded, characterized in that the control device divides and measures positive sequency components and negative sequency components from stator voltage and current, rotor voltage and current, and signals of stator magnetic flux and rotor magnetic flux of the doubly-fed induction generator. | 05-10-2012 |
20120077040 | HEAT DISSIPATION COATING AGENT AND HEAT-DISSIPATING PLATE INCLUDING SAME - The present invention relates to a heat dissipation coating agent and to a heat-dissipating plate including same, which efficiently dissipate heat from the surface of a heat-dissipating plate of an electric/electronic component. Particularly, the heat dissipation coating agent, which is applied to the surface of a heat-dissipating plate of an electric/electronic component, includes infrared radiation powder and a binder, and the heat-dissipating plate is coated with a heat dissipation layer consisting of the heat dissipation coating agent. Since the heat dissipation coating agent applied to the heat-dissipating plate is highly conductive, heat is emitted from the heat-dissipating plate by conduction as well as convection. In particular, the heat dissipation coating agent, which conducts heat with high conductivity, can be applied to a heat-dissipating plate of a high-power LED light source. | 03-29-2012 |
20120032770 | COIL BOBBIN FOR SUPERCONDUCTING MAGNETIC ENERGY STORAGE - Disclosed herein is a coil bobbin for a superconducting magnetic energy storage. The coil bobbin includes coil bobbin frames, superconducting coils, first support plates, second support plates and a center frame. The coil bobbin frames are provided in such a way as to face each other. The superconducting coils are wound around the respective coil bobbin frames. The first support plates are provided on surfaces of the respective coil bobbin frames that are on faces that are opposite to the surfaces between the coil bobbin frames that face each other. The second support plates are provided on the respective facing surfaces of the coil bobbin frames. The center frame is disposed between the second support plates and has an annular plate shape having a thickness that is gradually reduced towards a center of the toroidal arrangement. | 02-09-2012 |
20120020450 | TOMOSYNTHESIS SYSTEM FOR DIGITAL X-RAY IMAGING AND METHOD OF CONTROLLING THE SAME - Disclosed herein are a tomosynthesis system for digital X-ray imaging and a method of controlling the tomosynthesis system. The tomosynthesis system includes an X-ray source, a detector, and a terminal. The X-ray source continuously moves during a scan period, and maintains a uniform X-ray focus in each capture section in which capture is performed by adjusting the direction of an emitted electron beam. The detector detects an image of X-rays having passed through an area of interest of an object in the capture section. The terminal controls the adjustment of the direction of the electron beam, creates a three-dimensional (3D) X-ray image by synthesizing detected X-ray images, and then displays the 3D X-ray image. | 01-26-2012 |
20110315624 | METHOD OF MAKING NANOPOROUS OXIDE CERAMIC MEMBRANES OF TUBULAR AND HOLLOW FIBER SHAPE - The present invention is aimed to fabricate nanoporous anodic oxide ceramic membrane tubes with excellent pore characteristics by anodizing metal tubes located in a cylindrical symmetry with respect to a cathode which itself has a cylindrical symmetry. The membrane tubes may have protruded portions acting as supports and joints. The present invention also deals with stacks and bundles consisted of numbers of the anodic oxide ceramic tubes for filter and dialysis applications. | 12-29-2011 |
20110270092 | COMBINED APPARATUS FOR DETECTION OF MULTISPECTRAL OPTICAL IMAGE EMITTED FROM LIVING BODY AND FOR LIGHT THERAPY - The present invention provides a fluorescence detection and photodynamic therapy apparatus including: a combined light source unit | 11-03-2011 |
20110253674 | Method and Chamber for Inductively Coupled Plasma Processing for Cylinderical Material With Three-Dimensional Surface - The present invention relates to an inductively coupled plasma processing chamber and method for a cylindrical workpiece with a three-dimensional profile, and more particularly to an inductively coupled plasma processing reactor and method for a cylindrical workpiece with a three-dimensional profile, in which the workpiece serving as an internal RF antenna is connected to an RF power source through an impedance matching network at one end, and a terminating capacitor at another end so as to achieve low plasma contamination, confine dense uniform plasma in the substrate vicinity and suppress secondary electrons emitted from the substrate, and a plasma process can be applied to a 3-D linear semiconductor device, a metal, glass, ceramic or polymer substrate having planar or 3-D structured micro or nano patterns, and the like. | 10-20-2011 |
20110234343 | Cylindrical Magnetic Levitation Stage - The present invention provides a cylindrical magnetic levitation stage which includes a cylindrical substrate used to form micro-patterns of various arbitrary shapes on a large-area semiconductor substrate or display panel substrate, a cylindrical substrate, a combination of a first permanent magnet array and a first coil array and a combination of a first permanent magnet array and a first coil array, which are coupled to the cylindrical substrate, so that levitation, axial translation and rotation of the cylindrical substrate can be made finely through the control of a magnetic force generated by the interaction between a magnetic field generated by electric current applied to the coil arrays and a magnetic field generated from the permanent magnet arrays corresponding to the coil arrays. | 09-29-2011 |
20110218112 | Superconducting Wire - Disclosed herein is a superconducting wire which is used in, for example, superconducting magnet energy storage systems. The superconducting wire includes: a wire comprising a metal substrate, a superconducting layer and a buffer interposed between the metal substrate and the superconducting layer; and a stabilizer layer plated on the wire, wherein an epoxy resin insulating layer coats the entire surface of the stabilizer layer. The superconducting wire makes it possible to reduce damage to an insulating material when forming the insulating material during the production of the superconducting wire, and it has a uniform surface and can be produced in a simple manner. | 09-08-2011 |
20110212369 | PRESSING-TYPE CYLINDRICAL METAL AIR BATTERY - The present invention relates to a metal air battery for improving storage performance. The present invention provides a pressing-type cylindrical metal air battery which comprises: an external case which is formed in a cylindrical shape, and has a cathode terminal on one side and an anode terminal hole on the other side; an internal case which is formed in a cylindrical shape and coaxially inserted into the inside of the external case, has an anode terminal that is inserted into or extracted from the inside or the outside of the anode terminal hole on one side, and has an air inflow hole on the surface of a wall so that air can flow into the air inflow hole; and an elastic sealing means which is formed on the one side of the internal case, enables the air to flow into the anode terminal hole by elastically pressurizing the anode terminal when a battery is inserted into a battery compartment, and seals the anode terminal hole by elastically restoring the anode terminal again if the battery is separated from the battery compartment. Because the invention has a double structure comprised of the external case and the internal case, the air inflow hole of the internal case can be opened to or sealed from the outside when the battery is inserted into or separated from the battery compartment, thereby easily blocking the inflow of the air if the battery is not in use. Consequently, the present invention has the advantage of improving the storage performance by reducing natural discharge of the battery. | 09-01-2011 |
20110209990 | High-Field Anodizing Apparatus - Disclosed herein is a high-field anodizing apparatus, in which nanostructures are formed on a surface of a metal by immersing a metal anode and a counter electrode into an electrolyte charged in an anodizing cell to oxidize the metal, comprising: a power supply unit for applying a predetermined pattern of voltage between the metal anode and counter electrode in the electrolyte; a temperature control unit for maintaining the temperature of the metal anode, counter electrode and electrolyte constant; and a reaction rate control unit for measuring the value of current generated by the voltage supplied by the power supply unit and controlling the concentration of the electrolyte using the current value to maintain the current constant. The high-field anodizing apparatus is advantageous in that it is possible to prevent the damage of nanostructures caused by the rapid melting of a metal or the dielectric breakdown of an oxide film attributable to high-field anodization and to control the growth rate of nanostructures, thus greatly improving the productivity of nanostructures. | 09-01-2011 |
20110142174 | APPARATUS AND METHOD FOR DETECTING IMPULSE SIGNAL AND IMPULSE SEQUENCE - Disclosed herein is an apparatus and method for detecting an impulse signal or impulse sequence to realize wireless real-time location system application in a multipath fading environment. The apparatus includes a band-pass filter, an RF analog unit, and a signal processing base-band unit. The band-pass filter removes unnecessary frequency bands from impulse signals received through a receiving antenna. The RF analog unit detects the envelope of the impulse sequence deprived of the unnecessary frequency bands and based on a multipath, and outputs a digital signal regarding the envelope based on a leading edge of the envelope. The signal processing base-band unit performs low-speed 1-bit sampling and then output data, and, if frame synchronization has been found or a ranging command has been detected, performs high-speed 1-bit sampling and then calculates and outputs the propagation time of the impulse signals. | 06-16-2011 |
20110140710 | Continuous Critical Current Measurement Apparatus And Method Of Measuring Continuous Critical Current Using The Same - The present invention relates to an apparatus and method for measuring the critical current of a superconducting tape. A continuous critical current measurement apparatus for measuring critical current of a superconducting tape while feeding a superconducting tape in a liquid nitrogen container includes wheel-type current terminals and wheel-type voltage terminals. The superconducting tape is continuously supplied and fed by a reel-to-reel device, and the critical current of the superconducting tape is measured in real time using the wheel-type current terminals and the wheel-type voltage terminals while the superconducting tape is fed at constant linear velocity in contact with the wheel-type current terminals and the wheel-type voltage terminals. | 06-16-2011 |
20110051608 | WIRELESS LOCATION DETERMINATION SYSTEM AND METHOD - Disclosed herein is a wireless location determination system and method. | 03-03-2011 |
20100327670 | DOUBLY SALIENT PERMANENT MAGNET ELECTRIC MACHINE - Disclosed herein is a linear, curved or rotary electric machine. The electric machine includes first and second movers which are adjacent to each other and have a phase angle difference of 60° therebetween. The first mover includes phases U, V and W and the second mover includes phases /U, /V and /W. The electric machine of the present invention can reduce pulsations of thrust caused by end effect. In particular, in the case where the stator includes permanent magnets having the same poles and salient poles which alternate with the permanent magnets, the number of permanent magnets used can be reduced to half of that of a conventional linear electric machine. | 12-30-2010 |
20100259112 | STRUCTURE FOR LINEAR AND ROTARY ELECTRIC MACHINES - Disclosed herein is a structure for linear and rotary electric machines. The present invention provides a modular mover structure which includes coils that have an electrical phase difference of 180°, so that the path of magnetic flux is shortened, thus reducing the size of the machine and mitigating the back-EMF unbalance. Furthermore, the modular mover structure can be modified into various shapes. For example, when a skew structure is applied to a mover or stator iron core, the force ripples in an electric machine can be reduced. In addition, when a hinge structure is applied to a modular mover iron core, the mover can move in a linear and curved manner. Moreover, the structure of the present invention can be applied to a rotary electric machine. In this case, because the number of poles can be easily increased, a low speed high torque direct drive type rotary electric machine can be realized. | 10-14-2010 |
20100225183 | STATOR COOLING STRUCTURE FOR SUPERCONDUCTING ROTATING MACHINE - Disclosed herein is a structure for cooling the stator of a superconducting rotating machine. The structure includes a stator coil. Slots are axially disposed at the stator coil to support the stator coil, and a space is defined between the slots to allow the stator coil to be partially exposed. A stator yoke is disposed on the slots such that a space is defined between the exposed portion of the stator coil, the slots and the stator yoke. A cooling tube is disposed in the space defined between the exposed portion of the stator coil, the slots and the stator yoke, thus simultaneously cooling both the stator coil and the stator yoke. | 09-09-2010 |
20100142227 | PHOTOVOLTAIC POWER CONDITIONING SYSTEM AND METHOD - A photovoltaic power conditioning system and method is provided. The system includes an isolated DC/DC converter ( | 06-10-2010 |
20100116733 | NANOPOROUS OXIDE CERAMIC MEMBRANES OF TUBULAR AND HOLLOW FIBER SHAPE AND METHOD OF MAKING THE SAME - The present invention is aimed to fabricate nanoporous anodic oxide ceramic membrane tubes with excellent pore characteristics by anodizing metal tubes located in a cylindrical symmetry with respect to a cathode which itself has a cylindrical symmetry. The membrane tubes may have protruded portions acting as supports and joints. The present invention also deals with stacks and bundles consisted of numbers of the anodic oxide ceramic tubes for filter and dialysis applications. | 05-13-2010 |
20100116309 | THERMOELECTRIC MATERIALS - Disclosed herein is a thermoelectric material for intermediate- and low-temperature applications, in which any one or a mixture of two or more selected from among La, Sc and MM is added to a Ag-containing metallic thermoelectric material or semiconductor thermoelectric material. The thermoelectric material has a low thermal diffusivity, a high Seebeck coefficient, a low specific resistivity, a high power factor and a low thermal conductivity, and thus has a high dimensionless figure of merit, thus showing very excellent thermoelectric properties. The thermoelectric material provide thermoelectric sensors having high sensitivity and low noise and, in addition, is widely used as a thermoelectric material for intermediate- and low-temperature applications, because it shows excellent thermoelectric performance in the intermediate- and low-temperature range. | 05-13-2010 |
20100098957 | MANUFACTURING METHOD OF FUNCTIONAL MATERIAL USING SLICE STACK PRESSING PROCESS AND FUNCTIONAL MATERIAL THEREBY - Disclosed herein are a method for manufacturing a functional material for use in various industrial fields in which anisotropy or physical properties change according to height may be utilized, as well as a functional material manufactured thereby. The method includes the steps of: (1) mixing powders composed of the components of the functional material with a binder to prepare a mixed paste; (2) coating the mixed paste on a substrate, and then separating the coated material from the substrate, thus preparing a slice; (3) repeating step (2) to prepare a plurality of slices, and stacking the slices in a mold; and (4) pressing the stacked slices at a predetermined temperature and pressure. A multifunctional material, such as an anisotropic material having physical properties which change according to the direction of material, or a material having physical properties which change in a graduated manner according to height, may be manufactured in a simple and economical manner. | 04-22-2010 |
20100040887 | Transparent Conductive Films Containing Carbon Nanotubes And Touch Panel - Disclosed herein is a transparent conductive polycarbonate film coated with carbon nanotubes, including a transparent conductive layer formed by applying a mixed solution of carbon nanotubes and a binder on one side or both sides of a transparent polycarbonate film, and a touch panel using the transparent conductive polycarbonate film as a lower transparent electrode. The present invention provides a transparent conductive polycarbonate film coated with a mixed solution of carbon nanotubes and a binder, by which a touch panel having high transmissivity can be manufactured by directly forming a transparent conductive layer on a polycarbonate film used as a protective film of a liquid crystal display using carbon nanotubes, without using a polyethylene terephthalate (PET) substrate used for a transparent electrode of a conventional touch panel, by which the production cost of the touch panel can be decreased, and by which a thin touch panel can be manufactured. | 02-18-2010 |
20090310742 | X-Ray System for Dental Diagnosis and Oral Cancer Therapy Based on Nano-Material and Method Thereof - The present invention relates to applying an existing carbon nanotube X-ray tube for a dental X-ray imaging system that can replace a carbon nanotube electron emission source installed in a cathode portion. An X-ray tube system formed in a pen according to the present invention can be inserted in the oral cavity due to its thin thickness, thereby displaying an accurate image of an inner location of the oral cavity needing a diagnosis. For therapy of oral cancer requiring an appropriate amount of radiation therapy, since radiation can be directly irradiated to a diseased part, brachytherapy is enabled without concern of exposure dose of normal tissues. Therefore, when the system is commercialized, a great amount of distribution effect may be expected. The X-ray tube system that can be used for medical services such as a dental service includes an X-ray emission module emitting X-rays using a chipped nano-structured material, for example, carbon nanotube. The X-ray emission module is separable from a body in order to replace a cathode portion that is included in the X-ray emission module and is based on the nano-structured material. | 12-17-2009 |
20090111700 | Superconducting Strip Having Metal Coating Layer And Method Of Manufacturing The Same - Disclosed herein is a superconducting strip having a metal coating layer and a method of manufacturing the superconducting strip. The method of manufacturing the superconducting strip includes: washing a superconducting thin film, a stabilizing substrate and an anti-bonding substrate with alcohol; forming a metal coating layer on each of the superconducting thin film and stabilizing substrate; adhering the superconducting thin film and stabilizing substrate to each other such that the metal coating layer formed on the superconducting thin film faces the metal coating layer formed on the stabilizing substrate; disposing the anti-bonding substrate on an outside of the stabilizing substrate and then winding the anti-bonding substrate such that the anti-bonding substrate and the stabilizing substrate are closely adhered to each other by winding the anti-bonding substrate around a bobbin under a predetermined tension; and heat-treating the superconducting thin film and stabilizing substrate such that they are bonded to each other by the metal coating layer disposed therebetween. | 04-30-2009 |
20090110952 | Gradient Thin Film - Disclosed herein is a gradient thin film, formed on a substrate by simultaneously depositing different materials on the substrate using a plurality of thin film deposition apparatuses provided in a vacuum chamber, wherein the gradient thin film is formed such that the composition thereof is continuously changed depending on the thickness thereof by deposition control plates provided in the path through which the different materials move to the substrate. The gradient thin film is advantageous in that the thin film is formed by simultaneously depositing different materials using various deposition apparatuses, so that the composition thereof is continuously changed depending on the thickness thereof, with the result that the physical properties of a thin film are easily controlled and the number of deposition processes is decreased, and thus processing time and manufacturing costs are decreased, thereby improving economic efficiency. | 04-30-2009 |
20090107395 | Deposition Apparatus With Guide Roller For Long Superconducting Tape - Disclosed herein is a deposition apparatus with a guide roller for a long superconducting tape. The deposition apparatus has a supply reel which is provided in a vacuum chamber and rotated to supply the tape, a feed and deposition unit which is spaced apart from the supply reel and vacuum deposits a superconducting layer on the tape while feeding the tape, and a collection reel which is spaced apart from the feed and deposition unit and is rotated to collect the vacuum-deposited tape. The feed and deposition unit includes a drum which is rotated to wind the tape on a predetermined portion of an outer circumference of the drum several times, thus feeding the tape, and a guide roller which is spaced apart from the drum, includes a plurality of rollers each having on an outer circumference thereof grooves and protrusions at regular intervals, and is inclined at a predetermined angle with respect to a rotating shaft of the drum by a sum of a width of the tape and a thickness of each of the protrusions, with the tape passing over an outer circumference of the guide roller. The invention deposits a superconducting layer while maintaining constant tension when the tape is thermally deposited, thus preventing the tape from being deformed because of the difference in the thermal expansion and contraction of the tape resulting from non-uniform tension. | 04-30-2009 |
20090093369 | SUPERCONDUCTING SYNCHRONOUS MACHINE - Disclosed herein is a superconducting field coil of a homopolar type superconducting synchronous machine. The superconducting synchronous machine includes a superconducting field coil which comprises a single or double pancake coil formed by winding a superconducting wire, a core-type rotor which is made of a magnetic material, and an armature winding excited to three phases on a surface of a core of a stator. The field coil of the homopolar type superconducting synchronous machine is not rotated when the machine is in operation. Thus, there is no part for coupling the rotating field coil to a stationary cryo-cooler for cooling a refrigerant, so that the structure is simple, reliability is high, and various cooling methods are available. | 04-09-2009 |
20090009010 | Low-Noise, High-Speed, High Precision and High-Thrust Flux Reversal Motor for Linear or Rotary Motion System - Disclosed herein is to a flux reversal motor. The flux reversal motor includes a mover, and a plurality of permanent magnets. The mover moves linearly relative to a stator. A plurality of permanent magnets, having identical polarities, is provided in the end of each mover tooth. The permanent magnets are arranged on the left and right sides of a protrusion of the end of the mover tooth. Thus low noise/low vibration, high speeds, high precision, and high thrust motion can be realized. | 01-08-2009 |
20080286559 | Method of Manufacturing Transparent Conductive Film Containing Carbon Nanotubes And Binder, And Transparent Conductive Film Manufactured Thereby - This invention relates to a method of manufacturing a transparent conductive film containing carbon nanotubes and a binder, in which the carbon nanotubes are subjected to acid treatment, dispersion in a solvent, mixing with the binder, and application on the substrate, and to a transparent conductive film manufactured thereby. The method includes subjecting carbon nanotubes having an outer diameter of less than 15 nm to acid treatment to thus purify and surface functionalize them, followed by dispersing the treated carbon nanotubes in a solvent along with the binder, or mixing a carbon nanotube solution using a polar or nonpolar solvent with a binder solution, and applying the mixture on the substrate. Through the application of the mixture of treated carbon nanotubes and binder on the substrate, the transparent conductive film has improved transparency, electrical conductivity, dispersibility, substrate adhesiveness, chemical stability, durability and scratch resistance, and can be applied to various substrates, including hard or flexible substrates, thanks to high substrate adhesiveness and applicability. A solution in which the surface functionalized carbon nanotubes are well dispersed is prepared, thus facilitating the manufacture of the film using various materials and generating economic benefits. | 11-20-2008 |
20080264482 | DYE-SENSITIZED SOLAR CELL MODULE AND THE MANUFACTURING METHOD USING CARBON NANOTUBE ELECTRODE - Disclosed herein is a dye-sensitized solar cell module having carbon nanotube electrodes, the solar cell module comprising: upper and lower transparent substrates; conductive transparent electrodes formed on the inner surfaces of the upper and lower transparent substrates; a plurality of porous oxide semiconductor negative electrodes formed on the upper conductive transparent electrode at a constant interval and having a dye adsorbed on the surface thereof; counter electrodes formed on the lower conductive transparent electrode in a thin film form and made of a carbon nanotube layer as a positive electrode portion corresponding to the negative electrodes; grid electrodes formed on the upper and lower conductive transparent electrodes between unit electrodes, each consisting of the negative electrode and the counter electrode corresponding thereto, the grid electrodes serving to collect electrons generated by photosensitization; connecting electrodes formed on the upper and lower conductive transparent electrodes and electrically connected with the grid electrode so as to transfer electrons moved from the grid electrodes to the outside; and electrolyte placed between the negative electrodes and the counter electrodes. Also disclosed is a method for manufacturing the solar cell module. According to the disclosed invention, a high-efficiency, large-area, dye-sensitized solar cell comprising carbon nanotubes is realized by forming a plurality of dye-sensitized solar cell units in a module arrangement, and forming grid electrodes and connection electrodes for the collection and movement of electrons. Thus, the disclosed invention has high practical utility. | 10-30-2008 |
20080220976 | Method And Apparatus For Manufacturing Superconducting Tape Through Integrated Process - A method and apparatus for manufacturing superconducting tape through an integrated process, including the steps of: heat-treating a substrate wound on a drum in a reaction chamber; continuously depositing components, constituting a buffer layer, a superconducting layer, a contact resistance layer, and a protective layer of the superconducting tape, which are supplied from a deposition chamber, on the substrate; and heat-treating the substrate deposited with the components. The present invention is advantageous in that the unit cost and time for manufacturing a superconducting tape are decreased because all processes for manufacturing a superconducting tape can be performed under the same conditions, the uniformity and performance of a superconducting tape is improved because the same deposition conditions are applied to all of the process for manufacturing a superconducting tape, and a high-quality superconducting tape having high deposition efficiency can be obtained because specific components can be deposited on a large-sized substrate using a drum. | 09-11-2008 |