Abstract:
An apparatus for forming fine patterns by employing polarization interference in a laser scanning method comprises a laser generator; a calcite wave plate configured to refract at least one of the S wave and the P wave, polarized by the polarization plate, an analyzer configured to make coincident with each other the polarization directions of the S wave and the P wave having the paths spaced apart from each other by the calcite wave plate; an exposure lens; an exposure head; an X stage; and a rotation stage configured to move the substrate mounting unit around a Z axis which is a vertical axis.
Abstract:
Provided is a method for measuring photocatalytic activity of a photocatalyst, more particularly, a method for easily measuring the photocatalytic activity of a photocatalyst based on the change of absorbance or fluorescence intensity of NADH resulting from the photoactivation of the photocatalyst. The disclosed method for measuring photocatalytic activity of a photocatalyst is advantageous in that the photocatalytic activity of a photocatalyst can be measured in a short time using a small amount of sample and the speed and accuracy of measurement can be improved over the existing methods via a simple analysis procedure of measuring fluorescence intensity in a mixture solution of the photocatalyst and NADH without special pretreatment. In addition, objective comparison is possible because the photocatalytic activity of a photocatalyst can be quantified by measuring the change of the fluorescence intensity of NADH with time in the presence of the photocatalyst and calculating the reaction rate.
Abstract:
Provided is a method for identifying proper storage of goods requiring storage at a low temperature in which a culture medium including an indicator and marker microorganisms is mounted, as an indication marker, in the goods requiring storage at a low temperature, such that growth of the marker microorganisms is controlled by a storage condition, and proper storage of the goods requiring storage at a low temperature is identified according to a degree in which a color of the indication marker is changed according to the growth of the marker microorganisms.
Abstract:
The present invention relates to an apparatus for quantifying the binding and dissociation kinetics of molecular interactions of small molecular bio materials with high sensitivity almost without the influence of a change in the reflective index resulting from a buffer solution by making polarized incident light incident on the binding layer of a bio material, formed in a thin dielectric film, so that the polarized incident light satisfies a p-wave non-reflecting condition and a quantifying method using the same.
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:
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:
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:
The present invention relates to a method and apparatus for determining phase sensitivity of an accelerometer based on an analysis of the harmonic components of the interference signal, which can estimate phase lags of an accelerometer through an analysis of the interference signal obtained using a single photo-detector when the accelerometer moves in sinusoidal motion with an initial phase of vibration. The method comprises the steps of obtaining an interference signal in a time domain generated from a signal reflected by an accelerometer and a fixed mirror using a single photo- detector; transforming the interference signal in the time domain into a signal in a frequency domain including a plurality of harmonic signals by Fourier transform; and determining the phase sensitivity of the accelerometer using initial phase of vibration displacement of the accelerometer, which is included in the interference signal in the frequency domain.
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.