GIST , formerly known as the Kwangju Institute of Science and Technology , is a leading research-oriented institute of Korea located in Gwangju, South Korea. Students in GIST can attend classes in the institute and participate in research. Wikipedia.
Gwangju Institute of Science and Technology | Date: 2016-10-28
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 | Date: 2016-11-11
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. The apparatus and method according to the present invention are less time-consuming than the Westergren method and can acquire a variety of information (for example, hematocrit, dynamics of the sedimentation rate and aggregation of erythrocytes, a relationship between the sedimentation rate and aggregation of erythrocytes, and the like).
Gwangju Institute of Science and Technology | Date: 2016-11-18
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 | Date: 2017-01-27
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 | Date: 2017-02-03
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. The doping metal layer has a work function higher or lower than that of the graphene. When the doping metal layer has a work function lower than that of the graphene, the graphene, which is below the doping metal layer, is doped with an n-type. Also, when the doping metal layer has a work function higher than that of the graphene, the graphene, which is below the doping metal layer, is doped with a p-type. As described above, various aspects of junction may be implemented in the graphene channel, and three states may be obtained from a single transistor.
Gwangju Institute of Science and Technology | Date: 2017-01-06
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 | Date: 2016-09-08
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. The method of manufacturing a graphene-based membrane includes forming a monolayer graphene sheet and partially forming a deposition layer on the graphene sheet.
Gwangju Institute of Science and Technology | Date: 2016-08-26
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 | Date: 2017-02-16
The present disclosure provides a method and apparatus for measuring hematocrit of blood. The method includes measuring resistance data of a target blood sample; calculating a hematocrit estimation parameter for measuring hematocrit of the target blood sample using the resistance data; and determining a hematocrit estimation value using the hematocrit estimation parameter. The method and apparatus for measuring hematocrit (HCT) provides convenience in measurement of hematocrit using electrical modeling.
Gwangju Institute of Science and Technology | Date: 2017-05-10
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. In addition, unlike conventional compounds (e.g. riversine or BIO) for inducing low-molecular cell reprogramming, the indazole derivative compound of the present invention does not show cytotoxicity and thus is expected to have high growth in the market of cell therapy products when clinically applied. Conventional indazole derivative compounds have never known as a use for cell reprogramming. Compared with conventional indazole derivative compounds, the compound of the present invention has a great cell reprogramming ability while having no or little cytotoxicity.