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Gwangju Institute Of Science And Technology patents


Recent patent applications related to Gwangju Institute Of Science And Technology. Gwangju Institute Of Science And Technology is listed as an Agent/Assignee. Note: Gwangju Institute Of Science And Technology may have other listings under different names/spellings. We're not affiliated with Gwangju Institute Of Science And Technology, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "G" | Gwangju Institute Of Science And Technology-related inventors


Multi-function electronic device having memristor and memcapacitor and method for manufacturing the same

The present invention relates to a multi-function electronic device having a memristor and a memcapacitor and a method for manufacturing the same. The multi-function electronic device having a memristor and a memcapacitor has a laminated structure of a first insulating layer comprising an organic material/an active layer/a second insulating layer comprising an organic material, and thus has a resistance and capacitance varying with the applied voltage.. ... Gwangju Institute Of Science And Technology

Imaging device using plurality of lenses

An imaging device using a plurality of lenses according to the present disclosure includes: a compound eye through which a detected image is obtained by a plurality of lenses; a measurement matrix storage unit in which at least one measurement matrix is stored; and an image recovery unit configured to recover an image from the detected image using a digital signal processing technique using sparse representation using the measurement matrix. According to the present disclosure, an imaging device may be obtained which may improve the resolution of an image even while a wide undistorted fov, an infinite depth, and fast motion recognition, which may be obtained using compound eyes, are achieved. ... Gwangju Institute Of Science And Technology

Apparatus and method for measuring waveform of light wave

The present invention relates to a apparatus and method for measuring a waveform of a light wave. A light wave measurement apparatus according to an embodiment of the present invention includes a pulse separation unit to separate an input light wave into a fundamental pulse and a signal pulse, a time delay adjustment unit to adjust a time delay between the fundamental pulse and the signal pulse, a focusing unit to focus the fundamental pulse and the signal pulse whose time delay is adjusted on an ionization material, and an ionization yield measurement unit to measure an ionization yield from electrons and/or ions generated by the focused fundamental pulse and signal pulse. ... Gwangju Institute Of Science And Technology

Method of preparing nitrogen-doped graphene

An exemplary method of preparing nitrogen-doped graphene whereby it is possible to synthesize graphene having an improved surface coverage and a uniform single layer, and to prepare high quality graphene in a large area. In addition, an aromatic compound containing nitrogen can be used as a carbon source and nitrogen-doped graphene can be thus synthesized as nitrogen doped in the synthesis process. ... Gwangju Institute Of Science And Technology

Laser detection device using line beam, and vehicle information recognition method using same

A laser beam apparatus that is used for detecting vehicles in an intelligent traffic system according to an embodiment includes: a light source generating a laser beam of a short pulse; an optical transmission system converting the laser beam into a line beam; and an optical reception system receiving a beam dispersed rearward and reflected and returned when the line beam is radiated to a vehicle, and calculating a distance value from a reception time difference between the laser beam and the reflected beam, in which a first lens and a second lens that receive a laser from the light source are sequentially arranged in the optical transmission system, and the length of a horizontal axis of the line beam is increased or decreased to fit to the width of a road to be measured, by adjusting the distance between the light source and the first lens. Accordingly, it is possible to find out the current traffic situation in real time by accurately finding out whether there are vehicles passing through a predetermined area, using the lasers that are radiated from the laser detection apparatus regardless of the sizes of roads.. ... Gwangju Institute Of Science And Technology

Metal-semiconductor-metal two-dimensional electron gas varactor and method of manufacturing the same

Disclosed are a metal-semiconductor-metal two-dimensional electron gas varactor (msm-2deg) and a method of manufacturing the same. There is provided an msm-2deg varactor having an asymmetric structure, which includes a first gate formed on a semiconductor layer, and a second gate spaced apart at a predetermined distance from the first gate and formed on the semiconductor layer, wherein the first gate and the second gate are different in shape and gate length.. ... Gwangju Institute Of Science And Technology

Method for preparing hydrogel containing reduced graphene oxide

The present invention relates to a method for preparing a natural or synthetic polymer hydrogel loading graphene oxide or graphene, and to the selective and high-capacity adsorption and loading of the hydrogel with respect to a low-molecular weight material or a high-molecular weight material. More specifically, an alginate or polyacrylamide hydrogel loading graphene and a graphene derivative is prepared, wherein the hydrogel can be controlled to enable selective absorption according to the characteristics of an adsorbate by adjusting the reduction degree of graphene oxide, exhibits high adsorption capacity, and is easy to handle as a hydrate. ... Gwangju Institute Of Science And Technology

Vehicle and method for controlling the same

The vehicle includes: a plurality of vehicle antennas configured to receive a plurality of signals, respectively, from a remote control device; and a vehicle controller configured to: i) calculate an arrival distance between each of the plurality of vehicle antennas and the remote control device based on an arrival time of the plurality of signals received by the plurality of vehicle antennas, ii) extract an initial arrival pulse signal having a first reference value or higher from among at least one pulse signal contained in each of the plurality of signals, iii) extract at least one valid signal having a maximum value corresponding to a second reference value or higher from among the plurality of signals received by the plurality of vehicle antennas, iv) calculate an arrival distance of an initial arrival pulse signal contained in the at least one valid signal, and v) estimate a position of the remote control device based on the arrival distance.. . ... Gwangju Institute Of Science And Technology

Roughness improved high gloss abs sheet and process for preparing thereof

A high gloss acrylonitrile butadiene styrene (abs) sheet includes an abs substrate, an intermediate film of poly(3,4-ethylenedioxythiophen)-polystyrene sulfonate formed on top of the abs substrate, and a fluorinated resin film of poly(vinylidene fluoride-trifluoroethylene) formed on top of the intermediate film. A method of preparing the high gloss abs sheet is also disclosed.. ... Gwangju Institute Of Science And Technology

Polymer nonwoven nanoweb having ionic functional group and respirator mask comprising the same

Polymer nonwoven nanoweb containing ionic functional group and respiratory mask including the same are provided. The polymeric nonwoven web comprises polymer fibers having a diameter in the nanometer range and having a polymer with an ionic functional group in its main chain or side chain. ... Gwangju Institute Of Science And Technology

Insertable photoelectric device using absorption of light penetrating skin and electronic apparatus having same photoelectric device

. . An implantable photovoltaic device. The implantable photovoltaic device includes: at least two solar microcells configured to absorb sunlight; a thin film wire configured to connecting the at least two solar microcells to each other; a film configured to support the solar microcells; an upper encapsulation layer configured to encapsulate an upper side of the solar microcells and shield the solar microcells from the outside; and a lower encapsulation layer configured to encapsulate a lower side of the film and connect to the encapsulation layer. ... Gwangju Institute Of Science And Technology

Micro display having vertically stacked structure and method of forming the same

Disclosed is a micro display. Each of display portions constituting the micro display includes an individual active layer and p-type semiconductor layer which are on each of a plurality of n-type semiconductors which are each configured in a line form. ... Gwangju Institute Of Science And Technology

Ternary barristor with schottky junction graphene semiconductor

Disclosed is a graphene-based ternary barristor using a schottky junction graphene semiconductor. A graphene channel layer is doped with n-type and n-type dopants to have two different fermi levels and form a pn junction. ... Gwangju Institute Of Science And Technology

Reusable optical fiber aptasensor based on photo-thermal effect

The present invention relates to a reusable optical fiber aptasensor using a photo-thermal effect, and more particularly, to a reusable optical fiber aptasensor using white light and a laser. The aptasensor includes a light emitting unit for selectively emitting one of white light and a laser, a sensor unit including a plurality of aptamers, a plurality of gold nanorods, and a silver mirror, a detector for analyzing a wavelength of inputted light, and an optical fiber for connecting the light emitting unit with the sensor unit, and connecting the detector with the sensor unit, wherein the light emitted from the light emitting unit is totally reflected in the optical fiber and irradiated to the sensor unit, and light reflected from the silver mirror of the sensor unit is irradiated to the detector. ... Gwangju Institute Of Science And Technology

04/19/18 / #20180105611

Method of electrochemically modifying surface of electrode using dopamine-hyaluronic acid conjugates

Provided are a method of electrically modifying an electrode surface with dopamine-hyaluronic acid conjugates and technologies to suppress adsorption of harmful biomaterials and organisms by imparting anti-fouling to the electrode surface using the same and to maintain electrical properties of the electrode. More specifically, provided is a technology of coating an electrode surface via a dopamine functional group by electrochemically oxidizing dopamine-conjugated biocompatible polysaccharide polymers around the electrode. ... Gwangju Institute Of Science And Technology

04/12/18 / #20180100199

Method for determining prognosis of breast cancer patient by using gene expression data

A method for determining prognosis of a breast cancer patient according to an embodiment includes: collecting information on cancer tissue in a patient group from patient information determined to have breast cancer, collecting gene expression information of each patient group, sorting genes by performing a test for a group having a high expression level and a group having a low expression level based on gene expression of each patient group, clustering genes based on expression patterns of the sorted genes, defining a prognostic score using a gene expression ratio for a gene, and deriving prognosis for breast cancer in a patient group by using the prognostic score.. . ... Gwangju Institute Of Science And Technology

03/22/18 / #20180083212

Synaptic transistor based on metal nano-sheet and method of manufacturing the same

A synaptic transistor based on a metal nano-sheet and a method thereof are provided. A self-assembled floating gate layer is formed. ... Gwangju Institute Of Science And Technology

03/15/18 / #20180070887

Blood pressure measuring device and blood pressure measuring method using the same

There is provided a blood pressure measuring device comprising: a first heart rate measuring module configured to measure a first heart rate at a first location of an examinee's body; a second heart rate measuring module configured to measure a second heart rate at a second location of the examinee's body, wherein the first location is different from the second location, wherein a first spacing between the first location and a heart of the examinee is different from a second spacing between the second location and the heart of the examinee; and a blood pressure estimation module configured to estimate a blood pressure of the examinee based on the first and second heart rates measured by the first and second heart rate measuring modules.. . ... Gwangju Institute Of Science And Technology

03/01/18 / #20180061686

Apparatus for transferring thin-film elements

There is an apparatus for transferring a thin-film element, the apparatus comprising: a belt-type stamp; at least one support roller configured to allow a movement of the stamp; a first-stage roller system including at least one first-stage roller, wherein the first-stage roller is configured to allow thin-film elements attached to a first substrate to be picked up from the first substrate and to be attached to the stamp, wherein; and a second-stage roller configured to allow the thin-film elements attached to the stamp to be picked up from the stamp and to be printed onto a second substrate, wherein a curvature radius of the first-stage roller and a curvature radius of the second-stage roller are different from each other.. . ... Gwangju Institute Of Science And Technology

03/01/18 / #20180055335

Endoscope device for detecting disease based on thermal images

Disclosed is an endoscope device. An endoscope device according to an embodiment of the present invention includes: a heating source that heats a diagnosis target tissue; a cooling source that cools the diagnosis target tissue; a sensing unit that measures temperature of the diagnosis target tissue; and an image processing unit that obtains a first value meaning a temperature change for a predetermined time of the diagnosis target tissue heated by the heating source on the basis of the temperature obtained by the sensing unit, obtains a second value meaning time until the heated diagnosis target tissue is stabilized by being cooled by the cooling source after obtaining the first value, and produces an image for diagnose a tumor in the diagnosis target tissue on the basis of the first value and the second value.. ... Gwangju Institute Of Science And Technology

02/22/18 / #20180053872

Photoconductive semiconductor switch and method for manufacturing the same

There is provided a photoconductive semiconductor switch device comprising: a semiconductor substrate configured to generate electrons and holes using incident light thereto; at least one pair of conductive layers disposed on the semiconductor substrate, wherein one pair of the conductive layers consists of first and second conductive layers spaced apart from each other, wherein each of the first and second conductive layers contains abundant electrical carriers to have a low resistance; and first and second electrodes disposed on at least partially on the first and second conductive layers respectively. In this way, the application of the photoconductive semiconductor switch device may be widened.. ... Gwangju Institute Of Science And Technology

02/08/18 / #20180041673

Image sensing apparatus, image sensing method, distance measuring apparatus, and distance measuring method

There is provided an image sensing apparatus according to the present invention including: an image recovery portion which recovers an image from a sensed image by using a digital signal processing technique which uses a sparse representation for each measurement matrix; and a distance measurement portion which measures a distance of an object by using a norm of a value using at least light amount information of the estimated pixel which is estimated for each measurement matrix, in which the image recovery portion recovers the image by using the measurement matrix corresponding to the distance measured by the distance measurement portion. According to the present invention, when an image is sensed using compound eyes, image sensing can be performed without a separate distance measuring device or the like.. ... Gwangju Institute Of Science And Technology

12/28/17 / #20170367635

Apparatus and method for detecting a state of a driver based on biometric signals of the driver

An apparatus and a method is provided for detecting biometric signals of a driver and classifying the driver into a normal state or a fatigued state based on the biometric signals. An apparatus may include: a biometric signal measuring part configured to measure the biometric signals including a blood flow rate of a brain of the driver using an electro-encephalography (eeg), an electro-cardiography (ecg), and a functional near-infrared spectroscopy (fnirs) of the driver; a biometric signal integral part configured to integrate the measured biometric signals, to extract characteristics of the respective biometric signals from the measured biometric signals and to then integrate the extracted characteristics, or to classify the extracted characteristics of the biometric signals and to then integrate the classified characteristics; and a driver state detecting part configured to detect the state of the driver based on the integrated biometric signals.. ... Gwangju Institute Of Science And Technology

12/21/17 / #20170365781

Reram using stack of iron oxide and graphene oxide films

There is provided a non-volatile memory device comprising: a substrate; a lower electrode disposed on the substrate; a resistance layer disposed on the lower electrode; and an upper electrode disposed on the resistance layer, wherein the resistance layer include a stack of a graphene oxide film and an iron oxide film, wherein a resistance value of the resistance layer varies based on a voltage applied to the upper electrode.. . ... Gwangju Institute Of Science And Technology

12/21/17 / #20170363370

Heat transfer device

An embodiment relates to a heat transfer device including a heat generating device configured to generate heat having predetermined intensity by a user, a cover in contact with a body of the user while covering the heat generating device, and a heat transfer medium provided between the heat generating device and the cover to transfer the heat generated by the heat generating device, wherein the heat transfer medium is a structure that is formed by entangling a single wire having a predetermined length and has a predetermined width and a predetermined height, and is a structure that is compressed in an axial direction when being in contact with the body of the user and thus has a poisson's ratio of 0.5 or higher. Thus, a structural change in the heat generating device is not required and only a material in contact with the heat generating device is changed, so that generated heat may more rapidly reach the body of the user.. ... Gwangju Institute Of Science And Technology

12/14/17 / #20170358486

Metal-graphene heterojunction metal interconnects, method of forming the same, and semiconductor device including the same

Disclosed herein are a metal-graphene heterojunction metal interconnect, a method of forming the same, and a semiconductor device including the same. The method includes: a) forming a carbon source layer by depositing a carbon source on a top surface of a substrate; b) forming a metal catalyst layer by depositing a metal catalyst on the carbon source layer; and c) carrying out heat treatment on the substrate comprising the carbon source layer and the metal catalyst layer. ... Gwangju Institute Of Science And Technology

12/14/17 / #20170356014

Multi-enzyme conjugate, method for preparing the same and method for preparing organic compound using the same

The present disclosure relates to a multi-enzyme conjugate, a method for preparing the same and a method for preparing an organic compound using the same. More particularly, a multi-enzyme conjugate exhibiting improved catalytic efficiency over respective free enzymes using site-specific incorporation of a clickable non-natural amino acid into the enzymes and two compatible click reactions, a method for preparing the same and a method for preparing an organic compound using the same may be provided.. ... Gwangju Institute Of Science And Technology

11/09/17 / #20170322162

Chemical element analysis device and method for contaminants in liquid

The present invention relates to a chemical element analysis device and method for contaminants in a liquid. The chemical element analysis device for contaminants in a liquid according to the present invention comprises: a sample storage unit 10 for storing a sampled liquid sample 1; a laser unit 20 for emitting a laser beam 21: 21a, 21b, and 21c and irradiating the laser beam 21 to the sample 1: 1a, 1b, and 1c sprayed from the sample storage unit 10; and a spectrometer 30 for collecting plasma light 31: 31a, 31b, and 31c generated by irradiating the laser beam 21 to the sample 1, and measuring a spectrum of the plasma light 31.. ... Gwangju Institute Of Science And Technology

10/26/17 / #20170309788

Ultraviolet light emitting diode and method of manufacturing the same

A sidewall light emitting ultraviolet light emitting diode and a method of manufacturing thereof are disclosed. A light emitting structure is formed in an active region recessed from a substrate surface, and the light emitting structure is formed by growth in a direction parallel to the surface of the substrate. ... Gwangju Institute Of Science And Technology

10/12/17 / #20170292875

Device for generating and detecting photo mixing-type continuous-wave terahertz using phase noise compensation method

An embodiment of the present invention provides a continuous-wave terahertz generation and detection device using a photomixing technique, the device including: first and second light source units configured to output continuous-wave laser light sources, which have single wavelength and different frequencies, to generate optical signals; a first electro-optic phase modulator configured to shift a frequency of the optical signal generated by the first light source unit, and a second electro-optic phase modulator configured to shift a frequency of the optical signal generated by the second light source unit; a first optical amplifier configured to receive and amplify the optical signal whose frequency is shifted by the first electro-optic phase modulator and the optical signal generated by the second light source unit, and a second optical amplifier configured to receive and amplify the optical signal whose frequency is shifted by the second electro-optic phase modulator and the optical signal generated by the first light source unit; an opto-electronic converter configured to convert the optical signal amplified by the first optical amplifier into a terahertz wave; a photomixer configured to mix the optical signal amplified by the second optical amplifier and the terahertz wave generated by the opto-electronic converter and convert the mixed signal into an electrical signal; a photodetector configured to combine the optical signals transferred from the first and second optical amplifiers and convert the combined optical signal into an electrical signal; and a filter unit configured to filter the electrical signal passing through the photodetector, wherein the electrical signal obtained through the photodetector is compared with the electrical signal obtained by the photomixer, and phase noise having the same frequency is removed.. . ... Gwangju Institute Of Science And Technology

09/14/17 / #20170263281

Holographic characterization and playback apparatus

A holographic characterization and playback apparatus is provided, which includes a light source, an optical path-forming optical system for separating the light emitted from the light source into a probe light and a reference light of different polarizations, and combining optical paths of the probe light and the reference light.. . ... Gwangju Institute Of Science And Technology

09/07/17 / #20170256667

Graphene-semiconductor schottky junction photodetector of having tunable gain

Disclosed herein is a photodetector utilizing graphene. A single-layer graphene channel is formed on a semiconductor substrate doped with n-type impurity. ... Gwangju Institute Of Science And Technology

09/07/17 / #20170255023

Display system based on hologram and hologram display method using the same

The present disclosure relates to a holographic display system including: a projection object having a three-dimensional shape corresponding to an original item; an image projection unit comprising projectors projecting unit images of parts selected from a three-dimensional image of the original item on the projection object; and a reflector disposed adjacent to the projection object and reflecting images reflected from the projection object to provide an augmented three-dimensional holographic image. In the disclosure, the unit images corresponding to a three-dimensional image of an original item are projected on the projection object having a three-dimensional shape corresponding to the original item using the projectors and reflected by the projection object and augmented by the reflector, thereby providing a virtual image having three dimensional information corresponding to the original item, whereby a proper image is provided to an observer even when the viewpoint of the observer is changed.. ... Gwangju Institute Of Science And Technology

09/07/17 / #20170254996

Method for three-dimensional imaging using upconverting nanoparticles

The present disclosure relates to a method for three-dimensional imaging, including introducing upconverting nanoparticles into a sample, illuminating near-infrared laser such that upconverting nanoparticles introduced into a sample is excited, detecting a visible ray emitted from the excited upconverting nanoparticles and capturing and acquiring two-dimensional images by scanning the sample in a depth direction of the sample, and generating a three-dimensional image of the sample using the two-dimensional images.. . ... Gwangju Institute Of Science And Technology

09/07/17 / #20170252306

Pharmaceutical compositions for preventing and treating th1 or th2 mediated immune disease comprising 4h3mc(4-hydroxy-3-methoxycinnamaldehyde) as an active ingredient

The present invention relates to a pharmaceutical composition for preventing or treating th1- or th2-mediated disease, which comprises 4h3mc (4-hydroxy-3-methoxycinnamaldehyde) as an active ingredient. 4h3mc (4-hydroxy-3-methoxycinnamaldehyde) according to the present invention shows the effect of inhibiting t-cell activity without inducing t-cell death. ... Gwangju Institute Of Science And Technology

08/24/17 / #20170238831

Apparatus and method for brain computer interface

The present disclosure discloses an apparatus for a brain computer interface (bci) including a feature extraction filter trainer for training a feature extraction filter which minimizes an influence of a background brain wave while maximizing a difference between intended brain waves; and a classifier trainer for training a classifier for classifying the intended brain waves by using a feature vector obtained by filtering the intended brain wave at the feature extraction filter. With the apparatus, only the background brain wave is additionally measured, such that previous intended brain wave data can be reused and the brain wave can be classified more quickly and accurately.. ... Gwangju Institute Of Science And Technology

08/17/17 / #20170236706

Orthogonal patterning method

The present invention relates to a method for forming a layer, to be patterned, of an element by using a fluorinated material, which has orthogonality, and a solvent, the method comprising: a first step of printing with the fluorinated material so as to form, on a surface of a substrate, a mask template provided with an exposure part and a non-exposure part; a second step of coating the exposure part with a material to be patterned; a the third step of lifting-off the non-exposure part with the fluorinated solvent so as to form the layer to be patterned in the exposure part.. . ... Gwangju Institute Of Science And Technology

08/10/17 / #20170229587

Graphene transistor and ternary logic device using the same

Disclosed is a graphene transistor using graphene as a channel region and a logic device using the same. A doping metal layer is provided over a graphene channel of the graphene transistor. ... Gwangju Institute Of Science And Technology

08/03/17 / #20170219572

Lspr-based high sensitivity aptamer sensor using intercalation agent

Disclosed herein is an aptamer sensor including a substrate having metal nanoparticles formed thereon, an aptamer attached to surfaces of the metal nanoparticles to form a structure by selectively reacting with a target material to be detected, and an intercalating agent inserted between the aptamer and the target material in reaction of the aptamer with the target material to increase shift of an absorption spectrum due to local surface plasmon resonance sensor through aggregation toward the metal nanoparticles. . ... Gwangju Institute Of Science And Technology

07/20/17 / #20170205256

Optical characteristic measuring apparatus using interrogation optical fiber, optical fiber sensor system having the same, and optical characteristic measuring method

The disclosure relates to an optical characteristic measurement system including at least: a light source unit which outputs an input beam of a specific wavelength; a sensing unit which generates a signal beam by using a sensor whose optical characteristic is affected by an external environment condition; and a measuring unit which derives varied physical amount by using the signal beam delivered from the sensing unit, wherein the measuring unit includes: an optical coupler which distributes the signal beam into the two optical paths; and an interrogation optical fiber which is arranged on one of the paths on which the signal beam travels. The interrogation optical fiber has a linear light absorption characteristic in the specific wavelength range, and the light intensity of the signal beam is measured to detect a wavelength of the signal beam delivered from the sensing unit, and finally derive the physical amount applied from outside.. ... Gwangju Institute Of Science And Technology

07/13/17 / #20170201030

Metamaterial-based electromagnetic wave polarization converter

Provided is a metamaterial-based polarization converter in which a reception antenna and a transmission antenna are formed by using a metamaterial, to thus emit an incident non-polarized or polarized electromagnetic wave in an angle-converted polarization direction. The metamaterial-based electromagnetic wave polarization converter includes: a reception antenna made of a metamaterial and allowing incident electromagnetic waves to resonate at a surface of the reception antenna to generate a surface current; a transmission antenna at a rear side of the reception antenna, and made of an angle-converted metamaterial to thus allow the electromagnetic waves transferred from the reception antenna to resonate to then be emitted in a polarization direction; and a connector made of a conductive material that connects the reception antenna and the transmission antenna, to thereby transfer a surface current generated from the reception antenna to the transmission antenna.. ... Gwangju Institute Of Science And Technology

07/13/17 / #20170199123

Detection method of heavy metal ions and sensor using the same

The present invention relates to a heavy metal ion detection method and sensor which can ascertain the presence of heavy metal ions based on a precipitation reaction with a reaction solution without using a receptor and is reusable after being washed. The heavy metal ion detection method includes: mixing a sample containing heavy metal ions with a reaction solution capable of forming a precipitate through reaction with the heavy metal ions on a dielectric substrate with metal nanoparticles attached thereto to form a precipitate; and measuring change in lspr absorption wavelength of the metal nanoparticles before and after mixing to calculate a concentration of the heavy metal ions.. ... Gwangju Institute Of Science And Technology

07/06/17 / #20170189292

Composition for improving skin conditions, containing chlorophyll a or pheophorbide a

The present disclosure provides a composition for improving skin condition comprising chlorophyll a or pheophorbide a as an active ingredient. According to the present disclosure, chlorophyll a or pheophorbide a exhibits an effect of improving skin wrinkles and inflammatory reaction due to ultraviolet lights. ... Gwangju Institute Of Science And Technology

06/15/17 / #20170171683

Method for generating surround channel audio

A method includes extracting a difference value through extraction of features of a front audio channel signal and a surround channel of multichannel sound content by setting the front audio channel signal and the surround channel as input and output channel signals, respectively, training a deep neural network (dnn) model by setting the input channel signal and the difference value as an input and an output of the dnn model, respectively, normalizing a frequency-domain signal of the input channel signal by converting the input channel signal into the frequency-domain signal, and extracting estimated difference values by decoding the normalized frequency-domain signal through the dnn model, deriving an estimated spectral amplitude of the surround channel based on the front audio channel signal and the difference value, and deriving an audio signal of a final surround channel by converting the estimated spectral amplitude of the surround channel into the time domain.. . ... Gwangju Institute Of Science And Technology

06/08/17 / #20170162897

Sediment type microbial fuel cell

A sediment microbial fuel cell is provided. More specifically, the present invention provides a sediment microbial fuel cell characterized by comprising: an oxide electrode unit located within the sediment of polluted water; a reduction electrode unit located adjacent to the water surface within the water; and a solid matter separator unit arranged inside the sediment and located in an upper part of the oxide electrode unit spaced apart from the oxide electrode unit, wherein one or more surfaces of the oxide electrode unit are exposed in the separation space formed by the solid matter separator unit.. ... Gwangju Institute Of Science And Technology

06/08/17 / #20170162791

Cilia-assisted transfer printing of elctronic devices

The present disclosure relates a method for transfer printing of an electronic device comprising: forming a sacrificial layer on a handling substrate; forming a protective layer on the sacrificial layer; forming a polymer substrate on the protective layer; forming a pattern on the polymer substrate, and forming a ciliary adhesive rod on the sides of the polymer substrate; forming a supportive layer on the polymer substrate on which the adhesive rod is formed; and removing the sacrificial layer and the protective layer, and transfer printing the electronic device onto an object to-be-printed, while dissolving the to supportive layer.. . ... Gwangju Institute Of Science And Technology

06/08/17 / #20170158642

Composition for inducing cell reprogramming

The present invention relates to a composition for inducing cell reprogramming. The indazole derivative compound contained in the composition of the present invention shows an improved biological profile and at the same time can perform efficient cell reprogramming. ... Gwangju Institute Of Science And Technology

06/01/17 / #20170153235

Aptamer for specifically detecting patulin and patulin detection method using the same

An aptamer for specifically detecting patulin and a method for detecting patulin using the same. The aptamer for specifically detecting patulin is a single-stranded dna aptamer serving as a bioreceptor capable of effectively detecting patulin. ... Gwangju Institute Of Science And Technology

06/01/17 / #20170153222

Blood coagulation testing apparatus

A blood coagulation testing apparatus for determining compatibility between donor's blood and patient's blood before blood transfusion. The blood coagulation testing apparatus includes: a cylindrical main body connected at one end thereof to a supply tube for delivering donor's blood and connected at the other end thereof to a blood transfer tube for introduction of patient's blood, wherein the main body is divided into two sections by a barrier film extending in a longitudinal direction of the main body such that blood is introduced into the main body through two paths, wherein the donor's blood and the patient's blood are introduced into one of the two sections through one end of the main body and the other end of the main body, respectively, and wherein the barrier film is formed on a surface thereof with a blood coagulation indicator for checking coagulation.. ... Gwangju Institute Of Science And Technology

05/18/17 / #20170140772

Method of enhancing speech using variable power budget

Disclosed herein is a method of enhancing speech. The method includes calculating a far-end speech spectrum by performing fast fourier transformation of a signal received by a far-end user, calculating a background noise spectrum collected by a microphone provided to a mobile device of a near-end user; calculating a gain from the far-end speech spectrum and the background noise spectrum using a speech intelligibility index-based module, and deriving an enhanced far-end speech spectrum by applying the gain to the far-end speech spectrum, wherein, in calculating a gain using a speech intelligibility index-based module, a power budget used for transmitting and receiving a speech signal is set to vary with the background noise spectrum.. ... Gwangju Institute Of Science And Technology

05/18/17 / #20170138888

Apparatus and method for measuring erythrocyte sedimentation rate

An apparatus and method for measuring an erythrocyte sedimentation rate based on a change in conductivity of blood over time. The apparatus for measuring an erythrocyte sedimentation rate may include: a chamber for holding blood; a pair of electrodes being partially or completely brought into contact with the blood; and a conductivity meter measuring the conductivity through the pair of electrodes. ... Gwangju Institute Of Science And Technology

05/18/17 / #20170135641

Method of manufacturing multiple microelectrodes on needle and needle manufactured by the same

Disclosed herein are a method of manufacturing multiple microelectrodes on a syringe needle and a syringe needle manufactured by the same. The syringe needle includes multiple interdigitated electrodes (ides) placed on a surface of a portion of the syringe needle spaced apart from a tip of the syringe needle, a pair of interconnection lines for electrical connection of the multiple ides, the interconnection lines electrically connecting a first group of the ides on the left and a second group of the ides on the right through one end of each of the interconnection lines, and a conductor for electrical connection to a pcb provided to a main body of a syringe at the other end of each of the interconnection lines, wherein the multiple ides are basically formed of a material for a dielectric layer and are alternately arranged at a first distance from one another.. ... Gwangju Institute Of Science And Technology

05/11/17 / #20170133553

Light emitting diode and manufacturing method therefor

A light emitting diode and a manufacturing method therefore are provided. The light emitting diode includes at least: a first light emitting structure, formed on a substrate, in which a first n-gan layer, a first active layer and a first p-gan layer are sequentially layered; a first n-type electrode formed on one side of the upper part of the first n-gan layer; a current diffusion layer, formed on the first light emitting structure, in which at least one hole is arranged; and a second light emitting structure in which a second p-gan layer, which is formed in a region of a conductive layer in which at least one hole is arranged, and a second active layer and a second n-gan layer, which are formed on the second p-gan layer, are sequentially layered.. ... Gwangju Institute Of Science And Technology

05/04/17 / #20170121191

Capacitive deionization electrode comprising activated coffee grounds, preparation method thereof and water treatment device comprising the same

Disclosed herein are a capacitive deionization electrode including activated waste coffee grounds, a method of manufacturing the same, and a water-treatment apparatus including the same. The capacitive deionization electrode includes activated waste coffee grounds having a large specific surface area and an appropriate pore size distribution. ... Gwangju Institute Of Science And Technology

04/27/17 / #20170117638

Array antenna

Disclosed herein is an array antenna in which a plurality of radiating elements is arranged. The array antenna includes: a first layer comprising a first substrate forming an upper portion of the array antenna and a plurality of radiating elements disposed on the first substrate; a second layer comprising a second substrate forming a lower portion of the array antenna and a feedline disposed on the second substrate to supply output power to the plurality of radiating elements; and a third layer formed between the first layer and the second layer and comprising a ground plane and an aperture slot formed through the ground plane.. ... Gwangju Institute Of Science And Technology

04/27/17 / #20170116782

Installation space exploration method for a substance and readable media having the program therefor

The present invention relates to a method for exploring an installation space of an article. The method includes: acquiring a point cloud of an indoor space including a number of point data with three-dimensional scanning; acquiring obstacle data and passage data from the point cloud; and exploring an installation space of the article to determine a space where an obstacle is placed in the obstacle data and a space where a passage is present, as a space where the article is allowed to be installed. ... Gwangju Institute Of Science And Technology

04/27/17 / #20170115247

Apparatus, method and system for measuring electrical properties of biological sample and method for assessing degree of aging of biological sample

An apparatus for measuring electrical properties of a biological sample. The apparatus includes: a first channel through which a biological sample flows; a second channel formed above or below the first channel; and a plurality of electrodes adjoining the first channel and measuring electrical properties of the biological sample.. ... Gwangju Institute Of Science And Technology

04/20/17 / #20170106340

Desalination apparatus for seawater using pressure-assisted forward osmosis and reverse osmosis

Disclosed herein is a seawater desalination apparatus using pressure-assisted forward osmosis and reverse osmosis. The seawater desalination apparatus includes: a forward osmosis unit receiving seawater and sewage; and a reverse osmosis unit receiving diluted seawater from the forward osmosis unit, wherein the forward osmosis unit comprises a first train arrangement and a second train arrangement, and the number of trains disposed in the first train arrangement is different from the number of trains disposed in the second train arrangement.. ... Gwangju Institute Of Science And Technology

04/20/17 / #20170106102

Nanoparticles for diagnosis and treatment of tumors

Disclosed herein are nanoparticles for diagnosis or treatment of tumors. The nanoparticles include: (a) a core including a prussian blue dye; and (b) a shell obtained by partially or completely coating a surface of the prussian blue core with albumin, thereby diagnosing a tumor by a nuclear magnetic resonance imaging apparatus and a near-infrared fluorescence imaging apparatus and necrotizing a tumor by a combined photothermal-photodynamic effect.. ... Gwangju Institute Of Science And Technology

04/13/17 / #20170103776

Sound detection method for recognizing hazard situation

. . A method of detecting a particular abnormal sound in an environment with background noise is provided. The method includes acquiring a sound from a microphone, separating abnormal sounds from the input sound based on non-negative matrix factorization (nmf), extracting mel-frequency cepstral coefficient (mfcc) parameters according to the separated abnormal sounds, calculating hidden markov model (hmm) likelihoods according to the separated abnormal sounds, and comparing the likelihoods of the separated abnormal sounds with a reference value to determine whether or not an abnormal sound has occurred. ... Gwangju Institute Of Science And Technology

03/09/17 / #20170068045

Optical fiber having a cladding layer doped with metal nano-particles, coreless optical fiber, and method for manufacturing same

The present invention relates to an optical fiber for an spr sensor, characterized in that the optical fiber is comprised of a core layer and a cladding layer surrounding the core layer, and the cladding layer is doped with metal nanoparticles.. . ... Gwangju Institute Of Science And Technology

03/09/17 / #20170065939

Membrane based on graphene and method of manufacturing same

Disclosed herein are a graphene-based membrane and a method of manufacturing the same. The graphene-based membrane includes: monolayer graphene containing defects; a deposition layer disposed on the defects; and nanopores surrounded by the deposition layer. ... Gwangju Institute Of Science And Technology

03/02/17 / #20170063019

Optical fiber laser device and optical fiber laser providing method

Disclosed herein is an optical fiber laser device including a seed unit for providing at least two seed lights having different wavelengths; and an amplifying unit for amplifying the at least two seed lights. The amplifying unit includes: a preamplifying unit for amplifying the at least two seed lights by using excitation light of which the wavelength is shorter than the wavelengths of the seed lights; and a final amplifying unit to which no separate excitation light source is provided. ... Gwangju Institute Of Science And Technology

03/02/17 / #20170055838

Ultraslow light and nondegenerate phase conjugation-based real-time, non-invasive, in-vivo deep-tissue optical imaging apparatus, photodynamic therapy apparatus, optical imaging method and photodynamic therapy method

The present invention provides a method which can significantly increase the signal-to-noise ratio of an ultrasound-modulated optical signal by overcoming the shallow depth problem of in vivo optical imaging in existing optical imaging by use of a quantum optical phenomenon based on ultraslow light and nondegenerate phase conjugation and which can be applied directly not only to medical optical imaging, but also to medical photodynamic therapy, through slow light amplification of phase conjugate waves.. . ... Gwangju Institute Of Science And Technology

02/16/17 / #20170045484

Amino acid-based compound for detecting carbon dioxide, carbon dioxide chemical sensor and carbon dioxide detection method using the same

The present invention relates to an amino acid-based compound for detecting carbon dioxide, and to a carbon dioxide chemical sensor and a carbon dioxide detection method using the compound, wherein the compound having selectivity with respect to carbon dioxide exhibits a high selectivity to carbon dioxide and thus may detect carbon dioxide of a very low concentration, exhibits excellent light-absorbing or fluorescent characteristics, and, in particular, may achieve an effect of detecting carbon dioxide in real time.. . ... Gwangju Institute Of Science And Technology

01/12/17 / #20170010249

Method for detecting cadmium and kit for detecting cadmium using fluorescence intensity according to formation of cadmium nanocluster

. . The present invention relates to a method for detecting cadmium capable of easily, rapidly, and simply detecting cadmium quantitatively and qualitatively by sequentially adding albumin and a reducing agent to a sample, the albumin and the reducing agent inducing synthesis of a cadmium nanocluster capable of measuring a change in fluorescence intensity. In addition, the albumin and the reducing agent used for the method for detecting cadmium have excellent sensitivity even though they are low-cost, such that concentration of the cadmium present in the sample is capable of being directly measured.. ... Gwangju Institute Of Science And Technology








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