Abstract:
PURPOSE: A sample chamber for a scanning electronic microscope is provided to rapidly and conveniently exchange samples by opening an inlet of the sample chamber using an automatic chamber door. CONSTITUTION: A sample chamber(30) for a scanning electronic microscope comprises a chamber door(100). An inlet(130) is formed on one surface of the sample chamber. The chamber door automatically opens and closes the inlet. The chamber door has a cylinder(110) and a piston(120). The cylinder is fixed to the sample chamber. The piston is moved by pressure supplied to the cylinder. One end of the piston is connected to the chamber door, and the inlet of the sample chamber is opened and closed.
Abstract:
PURPOSE: A refrigerated container for fermented foods is provided to uniformly maintain a constant temperature of the entire internal space of a container to be suitable for transporting Korean traditional fermented foods, fruits, and fresh foods. CONSTITUTION: A refrigerated container (10) for fermented foods comprises a container body (20), a cold air supply unit (30), and a cooling coil (40). The container body comprises an internal space for loading cargoes. The cold air supply unit is equipped on one side of the container body to supply cooled air into the container body.
Abstract:
PURPOSE: A multi-channel quartz crystal micro-balance having a partitioning groove is provided to reduce interferences that vibration generated by each electrode interferes to other adjacent electrodes. CONSTITUTION: A multi-channel quartz crystal micro-balance(100) having a partitioning groove(40) comprises a crystal substrate(10) and a plurality of electrodes. The crystal substrate consists of a quartz crystal. The electrodes consists of a first electrode(20) and a second electrode. The first electrode is arranged in a front surface of the quartz crystal. The second electrode is arranged in a rear surface of the crystal substrate to be faced to the first electrode. The crystal substrate is divided into a plurality of sensing areas by the partitioning groove concavely formed on a surface of the crystal substrate. Each electrode is respectively arranged in the plurality of sensing areas divided by the partitioning groove.
Abstract:
PURPOSE: An apparatus and a method for controlling a scanning waveform are provided to minimize distortion of a waveform by setting an optimum frequency of a scanning waveform through a SEM image control unit. CONSTITUTION: A scanning waveform control unit(100) generates a scanning waveform according to a frequency of a scanning waveform corresponding to resolution of an SEM image and a time for obtaining an SEM image. A deflection coil(200) is formed to convert the scanning waveform to an electron beam and to scan the electron beam on a surface of a sample. A second electronic signal detection unit(300) detects a second electronic signal emitted from the surface of the sample. An AD convertor unit(400) transmits with the SEM image to a controller. A DA converter unit converts a frequency of the scanning waveform to an analog signal and transmits the analog signal to the scanning waveform control unit.
Abstract:
PURPOSE: The nano stage of the electron beam lithography apparatus revises the deflection coil in the production of the micro pattern in the admissible distortion rate range. The micro pattern is created consecutively. CONSTITUTION: The sample(40) is included in the upper side of the stage(33). The stage unit(30) is formed in order to go in and out to the vacuum chamber. The stage unit rotates the stage the X, Y, Z shaft with movement. The electronic scanning unit injects the electronic beam on sample on the nano stage(100). Domain more than the admissible distortion rate of the deflection coil is corrected through the micro movement of the nano stage.
Abstract:
PURPOSE: A UV nano implant lithography device with a temperature control function and a temperature control method are provided to improve accuracy of a pattern by minimizing thermal expansion difference between a mold and a substrate due to heating of a polymer resin. CONSTITUTION: A thermocouple and a heating line are installed on a thermostat plate. A chamber(4) receives a loading plate, a thermostat plate, and a pressure unit in a receiving space which is opened through a door. A temperature sensor(5) is installed inside the chamber to measure an inner temperature of the chamber. An external air handing unit constantly maintains the inner temperature of the chamber by circulating the air inside a chamber. A control board controls the operation of the external air handing unit and controls the temperature of the thermostat plate based on temperature data measured by a thermo couple and a temperature sensor.
Abstract:
본 발명은 다채널 수정 결정 미소 저울에 관한 것으로서, 수정 결정의 공진 특성을 이용하여 미소 질량을 측정할 수 있는 수정 결정 미소 저울에 있어서, 상기 수정 결정으로 이루어진 수정 기판; 상기 수정 기판의 앞면에 배치된 제1 전극과, 상기 수정 기판의 뒷면에 상기 제1 전극과 대향하도록 배치된 제2 전극이 쌍을 이루는 복수 쌍의 전극;을 구비하며, 상기 수정 기판은, 상기 수정 기판의 표면에 오목하게 형성된 구획홈에 의하여 복수 개의 센싱 영역으로 분리되며, 상기 각 쌍의 전극은, 상기 구획홈에 의하여 분리된 복수 개의 센싱 영역에 각각 배치되어 있는 것을 특징으로 한다. 본 발명에 따르면, 수정 기판의 표면에 오목하게 형성된 구획홈에 의하여 각 쌍의 전극이 서로 분리된 상태로 배치됨으로써, 각 전극에서 발생하는 진동이 주변의 다른 전극에 미치는 간섭을 감소시킬 수 있는 효과가 있다.
Abstract:
PURPOSE: A scanning electron microscope image noise eliminating apparatus and method are provided to improve spurious free dynamic range by diminishing and quantizing distortion through a dither signal and to minimize white noise. CONSTITUTION: A secondary electron detector(100) detects a second electronic signal emitted from the sample surface of an SEM(Scanning Electron Microscope). An AD convertor part(200) changes a secondary electron analog signal into a secondary electron digital signal and transmits the secondary electron digital signal to an SEM image controller(300). The SEM image controller changes the secondary electron digital signal into an SEM image of the sample surface. The SEM image controller establishes the resolution of the SEM image and the frequency of a scan waveform according to SEM image acquisition time and outputs to the PC monitor. A PMT(Photomultiplier)(400) inputs a PMT OUT signal amplifying the secondary electron signal.
Abstract:
PURPOSE: An apparatus for uniformly pressing an extremely large area is provided to prevent the generation of voids between a substrate stand and an elastic mold by reducing a pressure between the substrate stand and the elastic mold. CONSTITUTION: A chuck module(110) includes a substrate stand(111) in order to support and fix a substrate(10). An elastic mold(120) is arranged on the upper side of the chuck module and is spaced apart from the substrate. A body module(130) fixes the elastic mold. A pressurizing chamber(140) is arranged on the upper side of the elastic mold. A pump injects air in the pressurizing chamber.
Abstract:
PURPOSE: A substrate alignment stage for a UV nano imprint device is provided to minimize the change of a substrate by uniformly distributing an adsorption nozzle along the edge of an alignment stage when fixing the substrate on an adsorption plate. CONSTITUTION: An adsorption plate(10) has a flat upper side in which a substrate is received. A vacuum hole(12) is formed on the upper side of the adsorption plate and is connected to a vacuum exhaust pipe through a vacuum path formed inside the absorption plate. An adsorption nozzle(14) is recessed on the upper side of the adsorption plate from the vacuum hole exposed to the upper side of the adsorption plate and forms vacuum pressure for vacuum adsorption of the substrate between the substrate received in the adsorption plate and the adsorption plate.