Abstract:
The present invention relates to a rotational vibration exciter, and more particularly to a rotational vibration exciter which can accurately generate rotational vibration of a printed circuit board including a rotary coil for rotational excitation and rotational vibration of a rotary shaft integrated with the printed circuit board including the rotary coil by replacing a conventional cable as an external current supply line with a flexible PCB.
Abstract:
In the present invention, time information is sent through a common power line in executing home automation devices or using various industrial equipments. In the power line broadcasting, a small amount of data, such as time information, is transmitted unidirectionally, and long-distance power line broadcasting can be possible using carriers of a low frequency band. time setting for various instruments is automatically performed in response to a power signal after a breakdown of electric current, making unnecessary a user's action to perform the time setting, and the existing power line can be used without change.
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 so as to generate SPR according to an angle change of the polarized light; and a flow unit which supplies a buffer solution containing a bio material binding to or dissociation from the metal thin film generating surface plasmon, wherein the SPR and the ellipsometric phase change by change in an angle and a wavelength are simultaneously detected.
Abstract:
The present invention relates to an apparatus for collecting gas samples from inside foam, and to an analysis method using same. More particularly, the present invention relates to gas sample collection apparatus and foam analysis method which comprises grinding the foam to effectively collect gas samples from inside the foam, and which measures pressures before and after the collection of gas to improve the accuracy of gas analysis and improve the accuracy of evaluating characteristics of the foam.
Abstract:
The present invention relates to a membrane for preventing hydrogen permeation, which prevents hydrogen from being diffused and discharged by permeation through a membrane and also inhibits embrittlement of materials caused by hydrogen ion diffusion into the materials. Specifically, the membrane is characterized by: preventing hydrogen ion permeation through both the built-in potential of semiconductor layers and the potential applied by a reverse bias, wherein the semiconductor layers are respectively doped with p-type and n-type impurities; primarily preventing hydrogen molecule permeation by an adsorption layer for adsorbing hydrogen molecules; and secondly preventing hydrogen molecule permeation and also inhibiting embrittlement caused by hydrogen using the adsorption layer made of conductive materials as an applied electrode of the reverse bias, and simultaneously by causing ionization of hydrogen adsorbed inside the adsorption layer.
Abstract:
A quantification method of functional groups in an organic thin layer includes: a) measuring an absolute quantity per unit area of an analysis reference material having functional groups included in a reference organic thin layerby means of MEIS spectroscopy; b) carrying out spectrometry for the same reference organic thin layer as in a) and thereby obtaining peak intensities of the functional groups in the reference organic thin layer; c) carrying out the same spectrometry as in b) for an organic thin layer to be analyzed having the same functional groups and thereby measuring peak intensities of the functional groups with unknown quantity; and d) comparing the peak intensities of the functional groups measured in b) with respect to the absolute quantity of the analysis reference material in a) and thereby determining the absolute quantity per unit area of the functional groups with unknown quantity measured in c).
Abstract:
A frequency- stabilized laser apparatus and a method for stabilizing the frequency of a laser are disclosed. A semiconductor laser emits a beam. An external reflector has a resonance frequency and feeds back the emitted beam to the semiconductor laser if the frequency of the emitted beam is equal to the resonance frequency. An interference signal generator generates an interference signal for detecting the wavelength of the emitted beam and a controller detects the wavelength of the beam from the generated interference signal. According to the frequency- stabilized laser apparatus and the method for stabilizing the frequency of the laser, it is possible to stabilize the frequency of the beam emitted from the semiconductor laser and output the beam having the stable frequency for a long period of time.
Abstract:
The present invention relates to a structure for an electrostatic lens. The electrostatic lens of the present invention comprises a first electrode, a third electrode, and a second electrode interposed between the first electrode and the third electrode such that a predetermined spacing exists among the three electrodes. The center of each of the three electrodes has a through-hole through which a charged particle beam is to pass. The through-holes of the three electrodes are arranged in a line. Thus, an improved structure for an electrostatic lens may be obtained.
Abstract:
The present invention aims to provide a flight time based mass microscope system for an ultra high-speed multi mode mass analysis, for using a laser beam or an ion beam simultaneously to enable both a low-molecular weight analysis such as for drug/metabolome/lipid/peptide, or a high molecular weight analysis such as for genes/protein, without being limited by the molecular weight of the object being analyzed, and for significantly increasing the measurement speed by using a microscope method instead of a scanning method.
Abstract:
Provided is a photo active layer for a solar cell or a light emitting diode and a fabricating method thereof. The photo active layer is formed by alternately stacking silicon quantum dot layers in which a plurality of silicon quantum dots containing conductive type impurities are formed in a medium, which is a silicon compound, and conductive layers, which are polycrystalline silicon layers, containing the same conductive type impurities as those of the silicon quantum dots.