Korea Institute of Science and Technology

Other

Amogreentech Co., Ltd.

Jae-Min Hong

Yong-Won Song

Jung Ah Lim

Il-Doo Kim

Il Doo Kim

Seong-Mu Jo

Dong Young Kim

Young Chul Kim

Seong M Jo

Hak-Sung Kim

Dong-Young Kim

Hyun Nam Cho

Harry L Tuller

Jai Kyeong Kim

Chung Y Kim

Won-Kook Choi

Sung-Yeon Jang

Jong-Bok Kim

Avner Rothschild

Jae-Woong Yu

Won Il Son

Seung Hun Choi

Yong-Ju Jung

Seong-Ji Kwon

Ho Seong Nam

Sung-Chul Yang

Hee-Dok Choi

Won-Suk Han

Doo Kyung Moon

Dong Youn Yoo

Hee-Suk Kim

Young Sei Park

Yun-Seok Lee

Dae Seong Eom

Disclosed are amorphous carbon nanofibers including copper nanoparticles or copper alloy nanoparticles, copper composite nanoparticles prepared by grinding the amorphous carbon nanofibers and implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons, a dispersed solution including the copper composite nanoparticles, and preparation methods thereof and the amorphous carbon nanofibers include nanoparticles including copper, copper nanoparticles or copper alloy nanoparticles, and, the copper composite nanoparticles are implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons.

Carbon nanofiber including copper particles, nanoparticles, dispersed solution and preparation methods thereof

The method of manufacturing nanoparticles of a target material includes mixing graphene oxide with an aqueous solvent to prepare an aqueous solution, mixing the target material with an organic solvent to prepare an organic solution, mixing the aqueous solution with the organic solution, and preparing nanoparticles of the target material by the graphene oxide.

Nanoparticles, method of manufacturing nanoparticles, and electronics device including the same

A device for forming a roll-to-roll pattern includes: a plurality of rollers, that are separated from each other, for transferring a substrate in one direction; a pattern former provided on the substrate between neighboring rollers from among the plurality of rollers, and forming a pattern on the substrate; an absorber facing the pattern former with the substrate therebetween, and absorbing the substrate; a light irradiator neighboring the pattern former and irradiating light to the pattern; and a controller for controlling the roller, the pattern former, the absorber, and the light irradiator so that the pattern may be formed on the substrate and light may be irradiated to the pattern.

Device and method for forming roll-to-roll pattern

The present invention provides a gas sensor, including: a sensor substrate provided with an electrode; and a thin layer of sensor material formed by spraying a solution in which metal oxide nanoparticles are dispersed onto the sensor substrate. The gas sensor is advantageous in that a sensor material is formed into a porous thin layer containing metal oxide nanoparticles having a large specific surface area, thus realizing high sensitivity on the ppb scale and a high reaction rate. Further, the gas sensor is advantageous in that it can be manufactured at room temperature, and the thickness of a sensor material can be easily adjusted by adjusting the spray time, so that a thin gas sensor or a thick gas sensor can be easily manufactured.

Gas sensor using metal oxide nanoparticles, and method for manufacturing same

A method of manufacturing a thin-film transistor is provided, including preparing ink including a solution in which a graphene oxide, a reduced graphene oxide, or a combination thereof is dispersed, forming the ink on a substrate in the form of a pattern, and forming a source electrode and a drain electrode that are positioned at edges of the pattern and a semiconductor channel positioned between the electrodes by a coffee-ring effect in the ink by using the graphene oxide, the reduced graphene oxide, or the combination thereof within the formed pattern.

Method of manufacturing thin film transistor

Disclosed is a conductive ink composition, a manufacturing method thereof, and a manufacturing method of a conductive thin film using the same, and more specifically, a conductive ink composition is provided that includes composite metal nanoparticles including first metal nanoparticles and second metal nanoparticles, and a polymer matrix. The polymer matrix is a composition including a polymer and a solvent, the first metal nanoparticles and the second metal nanoparticles are different metals, and the content of the composite metal nanoparticles is about 20 to about 25 wt %, the content of the polymer is about 5 to about 10 wt %, and the content of the solvent is about 65 to about 75 wt %, based on the total weight of the composition.

Conductive ink composition, method for manufacturing the same, and method for manufacturing conductive thin layer using the same

Disclosed are a method for forming a metal oxide pattern and a method of manufacturing a thin film transistor using the patterned metal oxide. The method for forming a metal oxide pattern includes: preparing an ink composition including at least one metal oxide precursor or metal oxide nanoparticle, and a solvent; ejecting the ink composition on a substrate to form a pattern on the substrate; and photosintering the formed pattern. Herein, the metal oxide precursor is ionic.

Method for forming pattern of metal oxide and method for manufacturing thin film transistor using the same

Disclosed is: a single crystalline silicon carbide nanofiber having improved thermal and mechanical stability as well as a large specific surface area which is applicable to a system for purifying exhaust gas, silicon carbide fiber filter, diesel particulate filter having a high temperature stability and may be used in the form of nanostructures such as nanorods and nanoparticles.

Silicon carbide nanofiber and fabrication method of silicon carbide nanofiber using emulsion spinning

A porous conducting metal oxide electrode prepared by depositing a porous conducting metal oxide film containing a conducting metal oxide film layer having a network structure of nanofibers, containing nanograins or nanoparticles, on at least one surface of a current collector, and a conducting metal oxide coating layer on the network layer of the porous conducting metal oxide through a constant current method or a cyclic voltammetric method; and a high-speed charge/discharge and ultrahigh-capacity supercapacitor using the porous conducting metal oxide electrode are provided.

Conductive electrode using conducting metal oxide film with network structure of nanograins and nanoparticles, preparation method thereof and supercapacitor using the same

There is provided a metal oxide having a continuous nano-fiber network structure as a negative active material for a secondary battery. A method for fabricating such negative active material for a secondary battery comprises spinning a mixed solution of a metal oxide precursor and a polymer onto a collector to form composite fibers mixed with the metal oxide precursor and the polymer, thermally compressing or thermally pressurizing the composite fibers, and thermally treating the thermally compressed or thermally pressurized composite fibers to remove the polymer from the composite fiber.

Anode for secondary battery having negative active material with nano-fiber network structure and secondary battery using the same, and fabrication method of negative active material for secondary battery

A method for fabricating an ultra-sensitive metal oxide gas sensor is disclosed, which comprises the steps of spinning a mixture solution including a metal oxide precursor and a polymer onto a sensor electrode to form a metal oxide precursor-polymer composite fiber; thermally compressing or thermally pressurizing the composite fiber; and thermally treating the thermally compressed or thermally pressurized composite fiber to remove the polymer from the composite fiber. Since the gas sensor includes a macro pore between nanofibers and a meso pore between nano-rods and/or nano-grains, gas diffusion and surface area can be maximized. Also, the ultra-sensitive sensor having high stability in view of mechanical, thermal, and electrical aspects can be obtained through rapid increase of adhesion between the metal oxide thin layer and the sensor electrode.

Ultra-sensitive metal oxide gas sensor and fabrication method thereof

There is provided a high efficient gas separation membrane of two or more layers, which comprises a separating layer of 3-dimensional nanostructure and a supporting layer, wherein the 3-dimensional nanostructure can maximize a surface area per unit permeation area.

Efficient 3-D nanostructured gas separation membranes

Fluorene based polymers and light emitting diodes fabricated with the same as light emitting material

Diacetylene-based polymer containing light emitting group and electroluminescent device using the same

Growing community of inventors

Seoul, South Korea

Jae-Min Hong