Abstract:
PURPOSE: An electrical energy generator and an electrical energy storage apparatus including the same are provided to uniformly supply pressure to a plurality of nano piezoelectric devices using a carbon nano tube sheet, thereby preventing damage to the nano piezoelectric device due to excessive pressure. CONSTITUTION: A nano piezoelectric device(40) is formed on a first electrode(30). The nano piezoelectric device generates electricity using a piezoelectric effect. A second electrode is formed on the upper part of the nano piezoelectric device. A carbon nano tube sheet(50) is formed between the second electrode and the nano piezoelectric device. The carbon nano tube sheet is fixed on an upper substrate(60).
Abstract:
PURPOSE: A method for measuring photocatalyst activity using NADH is provided to enhance a measuring speed and the accuracy and to simplify an analysis process by measuring the fluorescence intensity in the optical catalyst and NADH mixture without a separated pre-processing process. CONSTITUTION: A method for measuring photocatalyst activity comprises next steps. NADH and a photocatalyst are inserted into a container and the fluorescence intensity of NADH are measured before an optical activity of the photocatalyst. After the ultraviolet light is irradiated in container and the optical catalyst is activated the light, the fluorescence intensity of NADH is measured. The measured difference of the fluorescence intensity of NADH before and after the optical activity is circulated so that a photo-catalytic activity is measured. The absorbance of NADH is used instead of the fluorescence intensity of NADH.
Abstract:
PURPOSE: A method for manufacturing a ferromagnetic signal crystal is provided to control a surface direction and a shape of the ferromagnetic single crystal. CONSTITUTION: A ferromagnetic thin film is formed on a substrate(S10). The ferromagnetic material is thermally processed under a hydrogen atmosphere(S20). A plurality of ferromagnetic single crystal are made. The ferromagnetic thin film is a Ni, Cr, or Fe thin film.
Abstract:
PURPOSE: A radiation source position control device for a multisource irradiator is provided to control the amount of irradiation of radiation by connecting a multisource holder rod to a freely moving lift according to the operation of a rodless cylinder, thereby selectively moving the location of the multisource holder rod. CONSTITUTION: A pair of cylinder frames and radiation source location setting frame(30) are separately installed to face the upper part of a base plate. A rodless cylinder(40) is connected between a pair of end blocks which are installed to be spaced apart in the up/down part of the cylinder frame. A lift(50) is attached to the front side of a moving block which is movably combined along the rodless cylinder and a guide rod(43). A rotary joint is installed in a rodend bearing which is combined with the lower side of a lift. A stopper guide is attached to the top and bottom of the radiation location setting frame with a uniform space.
Abstract:
PURPOSE: A resistance measuring device and a measuring method thereof are provided to obtain a reliable measurement result by selecting only two resistances without sacrificing measurement sensitivity during a process of selecting measurement range. CONSTITUTION: Power supply units(30, 32) supply the constant voltage as two fixed voltage sources. A resistance unit is parallel-connected with the power supply unit. Resistance units(34, 38) comprise two reference resistors serially connected with a potentiometer in-between. A voltmeter(42) measures the voltage between a connection node for two fixed power sources and a variable terminal node of a potentiometer.
Abstract:
PURPOSE: An evaluating method and a system of high voltage divider is provided, which can evaluate relatively big voltage range of high voltage divider using a relatively small voltage range of high voltage divider. CONSTITUTION: A first measurement unit(10) measures a voltage division ratio of a plurality of potential dividers for measurement. A second measurement unit(20) measures the division rate of under test high voltage divider and plurality of potential dividers for measurement. A voltage division ratio comparator(30) compares integrated voltage division ratio of a plurality of potential dividers for measurement with the division rate of the high voltage divider obtained by the measurement unit.
Abstract:
A magnetic moment measuring apparatus is provided to increase measurement precision by measuring magnetic moment of a magnetic body while maintaining the original shape and size of the magnetic body. In a magnetic moment measuring apparatus, a coil(10) has a space for receiving and rotating a magnetic body(20) while keeping the original shape and size of the magnetic body. A power source(Vs) for sending current(I) to the coil is separated from the coil. A resistor(R) is installed between the power source and the coil. A voltmeter(30) measures voltage delivered to the resistor. A magnetic flux sensor(40) is installed in the center of the coil to detect the magnetic flux density of the center of the coil. A magnetic flux density measuring instrument(50) is installed at the outside of the coil and connected with the magnetic flux sensor to measure the magnetic flux density of the center of the coil detected by the magnetic flux sensor. A transfer device(60) has a magnetic body fixer(62) installed in the front end of a non-magnetic rotary rod(61) to fix the magnetic body, inserts the magnetic body by moving the rotary rod to the center of the coil while the power source and the magnetic flux sensor are separated from the coil, and rotates the magnetic body in the front end of the rotary rod at the specific angle in a horizontal direction to the axial direction. A fluxmeter(70) measures magnetic flux generated due to the magnetic body connected with the coil while the power source and the magnetic flux sensor are separated from the coil, and inserted into the center of the coil or due to the magnetic body inserted into the center of the coil and then rotated at the specific angle.
Abstract:
An analog-digital converter using a Josephson DAC(Digital Analog Converter) and a method thereof are provided to execute the Josephson ADC(Analog Digital Converter) accurately by combining a programmable array with a prior ADC. An input stage ADC(Analog Digital Converter)(10) converts an analog input signal into digital data. A Josephson DAC(Digital Analog Converter)(20) converts the digital data from the input stage ADC into analog data. A differential ADC(30) extracts a difference voltage between a reference output voltage of the Josephson DAC and an unknown input signal. A data processor(40) adds output data of the differential ADC and output data of the input stage ADC.
Abstract:
PURPOSE: An optical apparatus and a colorimter calibration method are provided to implement a light source color light emitting device capable of satisfying spectrum and space uniformity. CONSTITUTION: An optical apparatus comprises an integration sphere, a first diffusing plate(120), a second diffusing plate(132), an LED light source, and a flat display device. The integration sphere comprises an input opening part(154) and an output opening part(152). The first diffusing plate is arranged in the central area of the integration sphere. The second diffusing plate is arranged between the first diffusing plate and input opening part. The LED light source and flat panel display device are arranged around the input opening part.
Abstract:
PURPOSE: An integration sphere photometer and a measuring method thereof are provided to obtain an effect of equalizing the space response of an integration sphere. CONSTITUTION: An integration sphere photometer comprises optical detectors(112a,112b,112c,112d), an integration sphere(102), light blocking layers(124), a photometer(114), and an adjusting part(150). The integration sphere includes penetration holes(122a,122b,122c,122d) which are formed to correspond to the optical detectors. The light blocking layers are arranged inside the integration sphere. The photometer is arranged in the penetration hole. The adjusting part adjusts an output signal of the optical detectors.