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 layer by 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 solar cell having quantum dot nanowire array and the fabrication method thereof. The solar cell according to the present invention includes quantum dot nanowire array with a heterostructure including matrix and semiconductor quantum dots, and p-type and n-type semiconductor and electrodes each contacting the quantum dot nanowires. With the solar cell according to the present invention, the band gap energy of the semiconductor quantum dot can be easily controlled, the semiconductor quantum dots having different sizes are provided in the quantum dot nanowire so that the photoelectric conversion can be performed in the wide spectrum from visible rays to infrared rays, the quantum dot is embedded in the high density quantum dot nanowire array so that light absorption can be maximized, and the quantum dot nanowire contact p-type and n-type semiconductor over a wide area, conduction efficiency of electrons and holes can be improved.
Abstract:
The present invention relates to an optical frequency synthesizer and an optical frequency synthesizing method using femtosecond laser optical injection locking, which inject a femtosecond laser optical frequency comb into a diode laser, thus obtaining single-mode laser light, phase-locked to only a single mode in the optical frequency comb, and which change the optical frequency and interval, that is, the repetition rate, of a femtosecond laser, together with the frequency of a semiconductor laser, thus scanning optical frequencies while realizing a single desired optical frequency. The optical frequency synthesizer using femtosecond laser optical injection locking, includes a mode-locked femtosecond laser (110), which is a master laser, and a diode laser (120), which is a slave laser and into which laser light emitted from the femtosecond laser is injected.
Abstract:
Disclosed herein is a brightness controllable LED illumination device using a tactile sensor sensing the intensity of force or the intensity of pressure. The brightness controllable LED illumination device includes at least one LED emitting light based on electric field formed between first and second electrodes; a tactile sensor sensing the intensity of force or pressure applied by a predetermined contact object and generating an output signal corresponding to the sensed intensity; and a controller connected to the tactile sensor and adjusting a variation in the electric field based on the output signal of the tactile sensor to control the brightness of the light emitted from the at least one LED.
Abstract:
The present invention relates to a measurement method of dew-point in low temperature, and more specifically to a measurement method of accurately distinguishing dew-point and frost-point using a quartz crystal microbalance dew-point sensor in a low temperature of 0° C. or less. To this end, the present invention provides a measurement method of distinguishing dew and frost point using a quartz crystal microbalance dew-point sensor in low temperature, comprising the steps of: measuring a resonant frequency of a quartz crystal microbalance dew-point sensor while slowly dropping temperature; observing shock waves of the resonant frequency; and determining dew point or frost point through the observation of the resonant frequency and shock waves of the quartz crystal microbalance dew-point sensor.
Abstract:
Disclosed herein is an electroluminescence device capable of controlling the brightness thereof based on the intensity of force or the intensity of pressure. The electroluminescence device includes a substrate at least a part of which is transparent; a first electrode formed on the bottom face of the substrate; an emission layer formed underneath the first electrode; a second electrode formed underneath the emission layer; a tactile sensor formed underneath the second electrode and sensing the intensity of force or the intensity of pressure; and a controller connected to the tactile sensor and adjusting a variation in electric field between the first and second electrodes based on the output of the tactile sensor to control the brightness of light emitted from the emission layer.
Abstract:
Disclosed herein are a tactile sensor module including a sensing unit connected to an external electronic device through a UWB communication network and a UWB communication method using the tactile sensor module. The tactile sensor module includes the sensing unit which has a plurality of sensor cells and outputs an output signal corresponding tactile information on a force applied thereto by a user using a pointing object, and a UWB based module which wirelessly connects the sensing unit to the external electronic device to construct a UWB communication network, receives external data in the form of a UWB wireless communication signal from the external electronic device, converts the output signal into data that can be recognized by the external electronic device and transmits the converted data to the external electronic device as a UWB wireless communication signal.
Abstract:
Disclosed herein are a mouse with capacitance sensors, a method for manufacturing the mouse and a method for constructing an algorithm for processing an input corresponding to force applied by a user's finger to the mouse. The mouse with capacitance sensors includes a bottom plate having a center point, a plurality of electrodes formed at regular intervals on the top face of the bottom plate and arranged apart from the center point of the bottom plate by an equal distance, a top plate bonded to the top faces of the electrodes and deformed by force applied by a pointing object, and an adhesive layer formed around the top plate and the bottom plate to combine the top plate and the bottom plate. When the pointing object touches the top plate, capacitance sensors are formed between the pointing object and the electrodes to recognize a travel distance, a travel direction and a moving speed of a cursor through the magnitude and direction of force applied by the pointing object.
Abstract:
The present invention relates to a technique that remarkably increases the processing speed of a conventional ultra-fast laser micro process having a very high processing accuracy. According to the present invention, a laser processing method based on transient changes in the status of laser-induced material couples a pulse of a ultrafast laser to a pulse of at least one auxiliary laser other than the ultrafast laser to reversibly change a material to be processed.
Abstract:
The present invention relates to a 3-color multiplex CARS spectrometer. In the 3-color multiplex CARS spectrometer, Raman resonance is achieved for multiple molecular vibrations of a sample by the combination of a short-wavelength pump beam generated by a broadband laser light source and a long-wavelength Stokes beam generated by a stable laser light source, and another short-wavelength laser beam having a narrow linewidth is then introduced separately to serve as a probe beam that interacts with the laser-driven sample, thereby generating CARS spectral signals whose wavelength components can be resolved. Accordingly, the 3-color multiplex CARS spectrometer solves problem of the conventional 2-color multiplex CARS spectroscopy in which the wavelength decomposition of CARS signals, necessary for high spectral resolution, is not possible with broadband pump light causing the CARS spectrum distortion.