Abstract: Provided is a memcapacitor. The memcapacitor includes: a first electrode having a metal-doped perovskite composition; a second electrode disposed on the first electrode; and a dielectric thin film having a perovskite composition, disposed between the first electrode and the second electrode, and having a variable dielectric constant depending on a voltage between the first electrode and the second electrode.
Type:
Application
Filed:
November 22, 2019
Publication date:
May 20, 2021
Applicant:
Gwangju Institute of Science and Technology
Abstract: A first electronic device according to various embodiments may select one of a plurality of representation matrices and one of a plurality of measurement matrices on the basis of a pattern and/or feature of data received from a sensor. The selection of the representation matrix and the measurement matrix may be performed on the basis of machine learning. Based on the selected representation matrix and measurement matrix, the first electronic device may adaptively compress at least a portion of the data. A second electronic device according to various embodiments may restore compressed data on the basis of the result of selecting the representation matrix and the measurement matrix. By dynamically selecting the representation matrix and the measurement matrix on the basis of machine learning, it is possible to reduce an error in the data restored by the second electronic device (e.g., a restoration error).
Type:
Application
Filed:
April 28, 2020
Publication date:
May 20, 2021
Applicant:
GIST (Gwangju Institute of Science and Technology)
Inventors:
Eui Seok HWANG, Jun Ho SONG, Yong Gu LEE
Abstract: The present invention relates to a blood diagnostic device, which includes one or more blood input parts into which blood is injected, a deterministic lateral displacement separation part which communicates with the blood input part to form a blood flow path along which the blood flows and separates white blood cells from remaining blood components, a first microchannel which communicates with the deterministic lateral displacement separation part so that the white blood cells separated through the deterministic lateral displacement separation part flow therein, one or more second microchannels which communicate with the deterministic lateral displacement separation part so that the remaining blood components separated through the deterministic lateral displacement separation part flow therein, a first discharge part which communicates with the first microchannel so that the white blood cells flowing in the first microchannel are discharged therethrough, and a second discharge part which communicates with the
Type:
Application
Filed:
January 29, 2021
Publication date:
May 20, 2021
Applicant:
GIST(Gwangju Institute of Science and Technology)
Abstract: 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. Accordingly, the aptasensor easily measures concentration of a target material in a sample using the optical fiber.
Type:
Grant
Filed:
November 15, 2017
Date of Patent:
April 20, 2021
Assignee:
GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventors:
Min Gon Kim, Bo Bin Lee, Jin Ho Park, Ju Young Byun
Abstract: A cloud service system includes an overlay cloud managing unit to totally control an overlay cloud which is the cloud for a developer, a cloud provider to provide an infrastructure in which the overlay cloud is configured, and a direct connection point to physically directly connect the overlay cloud managing unit with the cloud provider.
Type:
Grant
Filed:
December 5, 2018
Date of Patent:
April 20, 2021
Assignee:
GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Abstract: 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.
Type:
Grant
Filed:
September 9, 2016
Date of Patent:
March 16, 2021
Assignee:
GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventors:
Kyi Hwan Park, Sung Ui Hwang, Jun Hwan Jang, Bum Sik Won
Abstract: A self-transforming flexible electronic device, according to an embodiment of the present invention, comprises: a substrate having flexible properties and a flexible electronic device attached thereon; shape memory alloys provided on one lateral side of the substrate; and photoresists for fixing the shape memory alloys to the substrate, wherein the shape memory alloys are arranged on the substrate in the form of a plurality of lines, the photoresists are disposed in plurality along the extension direction of each shape memory alloy, and the shape memory alloys can be fixed inside the photoresists and at a predetermined distance away from the substrate.
Type:
Grant
Filed:
October 28, 2016
Date of Patent:
March 2, 2021
Assignee:
GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Abstract: Provided are a compound of chemical formula 1 or 2 and a use thereof. The compound can be advantageously used in the prevention or treatment of metabolic diseases including type 2 diabetes, insulin resistance, or obesity, on the basis of a mechanism of autophagy activation through the promotion of lysosome production.
Type:
Grant
Filed:
June 29, 2017
Date of Patent:
January 5, 2021
Assignees:
Industry-Academic Cooperation Foundation, Yonsei University, Gwangju Institute of Science and Technology
Inventors:
Myung-Shik Lee, Hyejin Lim, Young Eui Jeon, Jin Hee Ahn, H. S. Pagire
Abstract: Disclosed is a platform detecting glycated hemoglobin as an indicator for diabetes in the blood based on upconverting nanoparticles excited by near-infrared light and luminescence resonance energy transfer.
Type:
Grant
Filed:
December 28, 2015
Date of Patent:
December 22, 2020
Assignee:
GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventors:
Min-Gon Kim, Hyo-Young Mun, Eun-Jung Jo
Abstract: 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.
Type:
Grant
Filed:
June 30, 2015
Date of Patent:
December 8, 2020
Assignee:
GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventors:
Yong Chul Kim, Darren R. Williams, Da Woon Jung, Jung Eun Lee, Shin Ae Seo, Ji Yeon Park
Abstract: A residual echo estimator estimates a residual echo of a microphone signal input to a microphone as a reference signal is output through a speaker. The residual echo estimator estimates a magnitude of a residual echo of the reference signal at a current frame by using a magnitude of the linear echo of the reference signal at the current frame and a magnitude of the linear echo of the reference signal at a past frame, and updates weights to be applied to the magnitudes of the linear echo.
Type:
Grant
Filed:
August 21, 2019
Date of Patent:
December 1, 2020
Assignees:
Samsung Electronics Co., Ltd., Gwangju Institute of Science and Technology
Inventors:
Seongwoo Kim, Han Young Yim, Dongil Hyun, Jong Won Shin, Hyungchan Song
Abstract: Antimicrobial peptoids with improved selectivity to bacteria and a use thereof are described. Specifically, the antimicrobial peptoids have high antimicrobial activity and greatly decreased toxicity to animal cells. The antimicrobial peptoids show excellent antimicrobial activity against bacteria and exhibit low cytotoxicity to animal cells due to altered degree of folding in helical structure or altered charge characteristics. Therefore, the antimicrobial peptoids have improved selectivity to bacteria, and thus can be usefully used as antimicrobial compositions.
Type:
Grant
Filed:
March 19, 2019
Date of Patent:
October 27, 2020
Assignee:
GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Abstract: An apparatus for analyzing an in vivo component is provided. The apparatus for analyzing an in vivo component may include an impedance sensor including a first electrode and a second electrode configured to contact a fluid channel of a fluid to be analyzed. The apparatus may include an impedance measurement device configured to apply a current to the first electrode and the second electrode, measure a voltage between the first electrode and the second electrode based on applying the current, and measure an impedance of the fluid based on the measured voltage. The apparatus may include a processor configured to model the measured impedance using an equivalent circuit; and analyze the in vivo component based on modeling the measured impedance using the equivalent circuit.
Type:
Application
Filed:
January 15, 2020
Publication date:
October 15, 2020
Applicants:
SAMSUNG ELECTRONICS CO., LTD., GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventors:
Sung YANG, Kun Sun EOM, Myoung Hoon JUNG, Byung Jun KIM, Alexander ZHBANOV, Seung Yeob LEE, Ye Sung LEE
Abstract: A nonvolatile memory device having multi-level resistance and capacitance values is provided. Such a nonvolatile memory device includes: a substrate; a first electrode that is provided on the substrate; a dielectric layer that is provided on the first electrode, has resistance and capacitance changed by a tunneling conduction phenomenon of charges according to an applied voltage, has rectifying characteristics, and includes a dielectric material; an active layer that is provided on the dielectric layer, has resistance and capacitance changed according to an applied voltage, and includes a graphene oxide complex; and a second electrode that is provided on the active layer. In addition, the nonvolatile memory device has multi-level resistance and capacitance values according to an applied voltage.
Type:
Application
Filed:
March 20, 2018
Publication date:
October 1, 2020
Applicant:
Gwangju Institute of Science and Technology
Abstract: 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.
Type:
Grant
Filed:
August 26, 2016
Date of Patent:
August 25, 2020
Assignee:
GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Abstract: 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. According to the idea of the present invention, it is possible to obtain a photovoltaic device which stably and harmlessly operates in a living body.
Type:
Grant
Filed:
June 2, 2016
Date of Patent:
August 4, 2020
Assignee:
GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventors:
Jongho Lee, Kwangsun Song, Yong Chul Kim, Jung Hyun Han
Abstract: 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.
Type:
Grant
Filed:
May 23, 2017
Date of Patent:
August 4, 2020
Assignees:
Hyundai Motor Company, Kia Motors Corporation, Gwangju Institute of Science and Technology
Inventors:
Jihye Lee, Sinjung Kim, Jongyoung Lee, Daeyeon Kim, Kangwook Kim
Abstract: A residual echo estimator estimates a residual echo of a microphone signal input to a microphone as a reference signal is output through a speaker. The residual echo estimator estimates a magnitude of a residual echo of the reference signal at a current frame by using a magnitude of the linear echo of the reference signal at the current frame and a magnitude of the linear echo of the reference signal at a past frame, and updates weights to be applied to the magnitudes of the linear echo.
Type:
Application
Filed:
August 21, 2019
Publication date:
July 30, 2020
Applicants:
Samsung Electronics Co., Ltd., GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventors:
Seongwoo KIM, Han Young YIM, Dongil HYUN, Jong Won SHIN, Hyungchan SONG
Abstract: A light detection and ranging (LiDAR) apparatus and a method of operating the LiDAR apparatus are provided. The LiDAR apparatus includes a light transmitter configured to irradiate a laser pulse towards an object, the laser pulse being generated based on a reference signal; a light receiver configured to receive the laser pulse reflected from the object and configured to obtain a first signal from the received laser pulse; and at least one processor configured to convert the first signal and the reference signal respectively into unipolar signals and configured to detect a flight time of the laser pulse based on a correlation between the converted first signal and the converted reference signal.
Type:
Application
Filed:
August 28, 2019
Publication date:
July 16, 2020
Applicants:
SAMSUNG ELECTRONICS CO., LTD., GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventors:
Jungwoo KIM, Youngjoon JO, Kyihwan PARK
Abstract: 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.
Type:
Grant
Filed:
August 13, 2015
Date of Patent:
July 7, 2020
Assignee:
GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY