Abstract:
Provided is a multi-channel surface plasmon resonance sensor using beam profile ellipsometry; and, more particularly, to a high sensitive measuring technology, which is coupled with a vertical illumination type focused-beam ellipsometer using a multi-incident angle measurement method, and a surface plasmon resonance (SPR) sensing part deposited with a metal thin film. The multi-channel surface plasmon resonance sensor includes a vertical illumination type focused-beam ellipsometer in which light is polarized; a surface plasmon resonance (SPR) sensing part which is provided at the objective lens part of the focused-beam ellipsometer; and a multi-channel flow unit which supplies a buffer solution containing a bio material binding to or dissociation from a metal thin film generating surface plasmon.
Abstract:
The present invention relates to a resistance measuring apparatus and to a measuring method, said apparatus comprising a power supply unit for supplying constant voltage to two fixed voltage sources, a resistance unit connected in parallel to the power supply unit and which includes two reference resistances connected in serial with a potentiometer disposed therebetween, a voltmeter for measuring the voltage between the connection node of said two fixed voltage sources and the variable terminal node of the potentiometer, and an electrical connection means for connecting a resistance to be measured in parallel to either of said two reference resistances. The resistance measuring apparatus and the measuring method according to the present invention are advantageous in that an input of a detector is directly connected to a well-defined common ground to reduce influences from noise and thus enable the measurement of high insulation resistance, and just two reference resistances are selected even without causing a deterioration of the measurement sensitivity during a selection of a measurement range to simplify a circuit configuration and improve the reliability of the measurement result.
Abstract:
The present invention relates to a spectrophotometer using medium energy ion beam scattering and comprises: an ion source (10) that generates ions, a collimator (20) that generates the ions in a parallel beam, an accelerator (30) that accelerates the parallel beam, a pulsed ion-beam generator (40) that pulses the accelerated ion beam, a condenser-object lens (50) that focuses the pulsed ion beam onto a sample (1), a detector (60) that detects a spectroscopic signal for the pulse of the focused ion beam scattered from the sample, and a data analyzer (70) that analyzes the spectroscopic signal detected by the detector (60).
Abstract:
The present invention is a scanning ion conductance microscope, more particularly a scanning ion conductance microscope operating in high-speed constant current mode, wherein a constant current is applied to a pipette electrode using a signal proportional to the magnitude of ion conductance resistance inversely proportional to a distance between a pipette aperture and a sample surface as a feedback signal, such that low speed problems which are a drawback of existing microscopes operating in distance-modulation mode can be overcome enabling scanning at high speed, and poor sensitivity of existing microscopes operating in constant current mode can be overcome providing high-sensitivity properties comparable to those in the distance-modulation mode. Unlike existing scanning ion conductance microscopes operating in constant voltage mode, wherein a pipette installed in the microscope has a pipette electrode with a constant applied voltage, the pipette electrode arranged inside the aperture of the pipette to sense a change in ion current value flowing through the aperture making change into an image, the scanning ion conductance microscope according to the present invention applies a constant current to the pipette electrode, such that, if a distance between the sample surface and the pipette aperture decreases, the ion conductance resistance sharply increases by approximately 1/distance, being very sensitive to a distance change, and this signal proportional to the ion conductance resistance is used as a feedback signal to enable high-speed, high-sensitivity and high-resolution imaging.
Abstract:
Provided are an electronic certification mark having a certification mark and Radio Frequency Identification (RFID) or Bar Code attached to the certification mark, and a method and apparatus for displaying certification information using the certification mark. The method includes reading contents and meaning of certification or certificate information in the electronic certification mark with the RFID or the Bar Code attached to a certification mark by a reader; and displaying the certification contents and meaning or the certificate information. Since the electronic certification mark enables the contents and the meaning of the certification mark or certificate to be directly checked through a recognizing device by recognizing the RFID or the Bar Code embedded on the electronic certification mark, a certified product having a desired function is efficiently selected or purchased.
Abstract:
Provided are a process monitoring apparatus and method. The process monitoring apparatus includes a process chamber in which a process is performed, a probe assembly disposed on the process chamber, and comprising a probe electrode, a plasma generator generating plasma around the probe assembly, and a drive processor applying an alternating current (AC) voltage having at least 2 fundamental frequencies to the probe assembly, and extracting process monitoring parameters.
Abstract:
Provided are an integrating sphere photometer and a measuring method of the same. The integrating sphere photometer includes a plurality of photodetectors, an integrating sphere having through-holes formed to correspond to the photodetectors, baffles disposed inside the integrating sphere in front of the photodetectors to be spaced apart from the photodetectors, a photometer disposed at a through-hole, and an adjustment unit adjusting output signals of the photodetectors to have the same output signal with respect to light illuminated from a point-like standard light source disposed at a center region in the integrating sphere.
Abstract:
The present invention relates to a system for measuring, using a QMS, an absolute quantity of each component of a gas, and more particularly, to a system for measuring, using a QMS, an absolute quantity of each component of a gas, which is capable of performing not only a qualitative analysis but also a quantitative analysis in an accurate manner, using just a trace amount of gas introduced through a pinhole. According to the present invention, the productivity of products can be improved, and production management can be performed in an efficient manner, thereby improving industrial competitiveness.
Abstract:
The present invention relates to a nanopowder dispersing device comprising: an ultrasound focusing unit (2) consisting of a hollow solid tube (12) and an ultrasound vibrator (10) connected to the outer circumferential surface of the solid tube (12); a fluid travel pathway (8) which is laid so as to pass through the inside of the solid tube (12) of the ultrasound focusing unit (2) and which creates a pathway allowing a fluid containing a nanopowder to travel along the inside; and a signal generating and amplifying unit (4) which is connected to the ultrasound focusing unit (2) and supplies electrical signals for generating ultrasound in the ultrasound focusing unit (2).
Abstract:
The present invention provides a low-noise cooling apparatus. The cooling apparatus comprises an external container and an internal container. A heat-insulating layer in a vacuum state is formed between the external container and the internal container. The internal container comprises: a Dewar flask which contains a liquid refrigerant; a pre-magnetization coil arranged within the internal container and submerged in the liquid refrigerant; a pickup coil submerged in the liquid refrigerant; and a SQUID electrically connected to the pickup coil and submerged in the liquid refrigerant. The pre-magnetization coil consists of superconductors.