Korea Institute of Science and Technology

Drexel University

Other

Korea Advanced Institute of Science and Technology

Seon Joon Kim

Seung Sang Hwang

Soon Man Hong

Chong Min Koo

Albert S Lee

Kyung Youl Baek

Sangho Cho

Yury Gogotsi

Seung Jun Lee

Nakwon Choi

Hee-Tae Jung

Mina Kim

Jin Young Seo

Yu Ri Lee

Daesin Kim

Do Xuan Huy

Sejin Kim

Min Hyuk Choi

Que Thi Nguyen

Hang Kyu Cho

Hwan Gyu Lee

Junpyo Hong

Hyeong-Jun Koh

Tae Yun Ko

In Sik In

Se Hyun Doo

Tae Gon Oh

Hyejeong Seong

Aamir Iqbal

Kanit Hantanasirisakul

Eun Yeong Yang

You Mee Choi

The disclosure relates to a MXene-polymer composite comprising MXene and a UV curable polymer, and a sensor comprising the same. Particularly, the MXene-polymer composite according to the disclosure polymerizes the MXene with the UV-curable polymer to stably disperse the MXene in a porous hydrogel matrix, thereby exhibiting a larger surface area and enabling local patterning, and when the MXene-polymer composite is applied as a sensor, excellent electrochemical sensitivity and gas reactivity can be obtained.

MXene-polymer composite comprising MXene and UV curable polymer, and sensor comprising the same

The present disclosure relates to a UV- and heat-curable ladder-like polysilsesquioxane copolymer and a method for preparing the same. Since a controlled functionality can be provided only on a desired region via a thiol-ene click reaction without an additional additive, an insulating layer having a low dielectric constant and a microcircuit pattern can be formed without an additional etching process.

UV- and heat-curable ladder-like polysilsesquioxane copolymer, insulation composition containing same and method for forming microcircuit pattern using same

The present invention relates to an etching composition and a method of producing a MXene. The etching composition of the present invention can stably and quickly produce a MXene at high temperature. The etching composition of the present invention can produce a MXene in high yield. The etching composition of the present invention can easily produce various types of MXenes. A method using the etching composition of the present invention can produce a MXene having excellent electrochemical and mechanical properties.

MXene with excellent mechanical strength and fast and high-yield anhydrous synthesis method thereof

In an aspect, the present disclosure provides a heat-treated transition metal carbonitride MXene film annealed at high temperatures and a polymer composite comprising the same. In another aspect, the present disclosure provides a method for producing a heat-treated transition metal carbonitride MXene film comprising: obtaining a MXene aqueous solution containing dispersed 2-dimensional (2D) MXenes through an acid etching process; filtering the obtained MXene aqueous solution through a vacuum filtration process to produce a free-standing film; and annealing the produced free-standing film at high temperatures to obtain a heat-treated transition metal carbonitride MXene film. In still another aspect, the present disclosure provides an electromagnetic interference (EMI) shielding method comprising: superposing a coating comprising a heat-treated transition metal carbonitride MXene film on at least one surface of an object in a contact or non-contact manner.

Transition metal carbonitride MXene films for EMI shielding

The present disclosure relates to 2-dimensional MXenes surface-modified with catechol derivatives, a method for preparing the same, MXene organic ink including the same, and use thereof (e.g. flexible electrodes, conducive cohesive/adhesive materials, electromagnetic wave-shielding materials, flexible heaters, sensors, energy storage devices). Particularly, the simple, fast, and scalable surface-functionalization process of MXenes using catechol derivatives (e.g. ADOPA) organic ligands significantly improves the dispersion stability in various organic solvents (including ethanol, isopropyl alcohol, acetone and acetonitrile) and produces highly concentrated organic liquid crystals of various MXenes (including TiCT, NbCT, VCT, MoCT, TiCT, TiCNT, MoTiCT, and MoTiCT). Such products offer excellent electrical conductivity, improved oxidation stability, excellent coating and adhesion abilities to various hydrophobic substrates, and composite processability with hydrophobic polymers. This finding will lead to further studies on the structures, properties, and physics of the organic MXene liquid crystals and their practical applications.

2-dimensional MXene surface-modified with catechol derivative, method for preparing the same, and MXene organic ink including the same

Disclosed is a recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder. The recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder according to an embodiment of the present disclosure includes: a raw material supply unit configured to supply a raw material that is a cross-linked polyethylene resin; and a twin screw extruder configured to receive the raw material from the raw material supply unit, the twin screw extruder including a cylinder and a twin screw installed inside the cylinder to rotate in the same direction, the twin screw extruder being configured to de-crosslink and recycle the raw material under a de-crosslinking reaction temperature and reaction pressure atmosphere while continuously transporting the raw material along the twin screw by the rotation of the twin screw.

Recycling apparatus for a cross-linked polyethylene resin using twin screw extruder

Provided are a catalyst composition with improved processability and chemical warfare agent degradation ability, a film composite manufactured by casting the same, and a preparation method thereof. Specifically, provided are a catalyst composition including a copolymer of a first polymer and a second polymer; and a metal-organic framework (MOF), and a film composite including the same, wherein processability and catalytic activity are improved.

Catalyst composition with improved chemical warfare agent degradation ability and processability

This invention relates to a chemiresistor gas sensor using MXene and a method of manufacturing the same, wherein the chemiresistor gas sensor, manufactured in a manner in which a TiCTMXene thin film is formed and transferred onto a sensor substrate, can exhibit good response and sensitivity.

Chemiresistor gas sensor using MXene and the manufacturing method thereof

A system and a method of improving sound image localization through cross-placement are provided. The system includes a first stereo system including a first left side speaker that is provided with a left side audio signal and a first right side speaker that is provided with a right side audio signal, and a second stereo system including a second left side speaker that is provided with a left side audio signal and a second right side speaker that is provided with a right side audio signal. The second right side speaker is provided adjacent to the first left side speaker and the second left side speaker is provided adjacent to the first right side speaker.

System and method for improving sound image localization through cross-placement

Growing community of inventors

Seoul, South Korea

Seon Joon Kim