Center for Advanced Meta-materials

Korea Institute of Machinery & Materials

Jjns Co., Ltd.

Hyun June Jung

Hak Joo Lee

Jae Hyun Kim

Bong Kyun Jang

Se Jeong Won

Kwang Seop Kim

Jun Hyuk Kwak

Jong Jin Park

Jae-Hyun Kim

Chan Soo Kim

Bongkyun Jang

Kwangseop Kim

Seung-Mo Lee

Yun Hwangbo

Kyung-Sik Kim

Seung Mo Lee

Kyung Sik Kim

Choong Man Moon

Yong June Kim

Min Ah Yoon

Hyun Sung Park

Disclosed herein is a sound insulation panel which is easy to manufacture and has a light weight. The sound insulation panel includes: a patterned plate comprising an edge plate and a separation plate extending into an inner region of the edge plate and dividing the inner region into a first elastic region and a second elastic region; and an elastic plate protruding from the patterned plate to be stepped with respect to the patterned plate and including a first elastic plate disposed in the first elastic region and a second elastic plate disposed in the second elastic region, the elastic plate blocking an air flow path and converting airborne sound waves into elastic waves, wherein the first elastic plate and the second elastic plate are displaced in opposite directions at a resonant frequency of the sound insulation panel.

Sound insulation panel and sound insulation structure comprising the same

A method for transferring a micro device on a curved surface according to an exemplary embodiment of the present invention includes: coating an adhesive layer on an external circumferential surface of a tube; providing a micro device pattern on one side of a substrate; positioning an external circumferential surface of the tube to contact the substrate and allow a length direction of the device pattern to cross a radius direction of the tube, and rotating the tube with respect to an axis-direction of the tube and simultaneously moving at least one of the tube and the substrate in a rectilinear way to transfer the micro device pattern on the substrate to the adhesive layer; and fixing the transferred micro device pattern to the adhesive layer by curing the adhesive layer.

Method for transferring micro device on curved surface and apparatus for transferring micro device on curved surface

A transparent stealth structure includes: a first transparent film structure stacked on a front surface of a transparent base, the first transparent film structure causing energy loss of incident electromagnetic waves having a target frequency to change a phase of transmitted electromagnetic waves propagating toward the transparent base; and a second transparent film structure stacked on a back surface of a transparent base, the second transparent film structure reflecting the transmitted electromagnetic waves having passed through the transparent base while adjusting a phase of reflected waves propagating toward the first transparent film structure, wherein the first transparent film structure includes a first front transparent conductive pattern having a first sheet resistance and a second front transparent conductive pattern filling a region, and the second transparent film structure includes a first rear transparent conductive pattern having a third sheet resistance and a second rear transparent conductive pattern filling a region.

Transparent stealth structure

Provided are a graphene preparation apparatus, including: a chamber having a space for preparation of graphene; a first electrode and a second electrode disposed in the chamber to be separated a predetermined distance from each other, the first electrode and the second electrode supporting a catalytic metal and receiving electric current for preparation of the graphene to heat the catalytic metal using Joule heating; additional heaters disposed at opposite sides of the catalytic metal, respectively, and heating the catalytic metal to compensate for a temperature difference between both end regions and a central region of the catalytic metal heated using Joule heating induced by the first electrode and the second electrode; and a current supply unit supplying electric current to the first electrode and the second electrode.

Graphene preparation apparatus using Joule heating and preparation method therefor

A graphene manufacturing device using Joule heating includes: a chamber having a space provided therein so as to synthesize graphene; and a first roller portion and a second roller portion disposed inside the chamber to be spaced from each other such that same support a catalyst metal penetrating the interior of the chamber and are supplied with an electric current for graphene synthesis, thereby Joule-heating the catalyst metal. In order to compensate for a temperature deviation of the catalyst metal passing between the first roller portion and the second roller portion, a first area of the catalyst metal, which is close to the first roller portion, and a second area of the catalyst metal, which is close to the second roller portion, are disposed to have movement paths facing each other.

Graphene manufacturing device and graphene manufacturing method using same

Provided is a graphene production method using Joule heating, including: a catalytic metal placement step in which a catalytic metal is disposed on a pair of electrodes disposed inside a chamber; a gas supply step in which a carbon-containing reaction gas and a carrier gas for transporting the reaction gas are supplied into the chamber; a heating step in which the catalytic metal is rapidly heated to a temperature required for synthesis of graphene; a temperature maintenance step in which the temperature of the catalytic metal is maintained to form the graphene on the catalytic metal; and a cooling step in which the catalytic metal is cooled to prevent local occurrence of hotspots on the graphene formed on the catalytic metal, wherein the heating step, the temperature maintenance step, and the cooling step constitute one cycle of temperature control and the cycle is repeated for a predetermined process time.

Method for producing graphene using joule heating

The present invention relates to a carrier film for transferring a microelement, wherein, when a microelement is pressurized, a uniform pressurizing force is provided to the entire microelement, and a damage to the microelement can be prevented. The carrier film for transferring a microelement comprises: a load control layer having a first elastic modulus and having a space formed in a part of the interior thereof; and an adhesive layer having a second elastic modulus that is smaller than the first elastic modulus, the adhesive layer being provided on the upper portion of the load control layer and configured such that a microelement supposed to be transferred to a target substrate is attached thereto. The load control layer has a first zero-rigidity area that maintains a first stress in a first deformation range from a first strain to a second strain.

Carrier film for transferring microelement

A nanomaterial ribbon patterning method includes: forming a first nanomaterial layer having a first threshold strain on an upper surface of a substrate; forming a second nanomaterial layer on an upper surface of the first nanomaterial layer; forming a thin layer having a second threshold strain smaller than the first threshold strain on an upper surface of the second nanomaterial layer; generating plural cracks on the thin layer and the second nanomaterial layer by applying tensile force to the substrate; placing a mask on an upper surface of the thin layer; removing the mask and peeling off the sacrificial layer on the upper surface of the thin layer; and removing the sacrificial layer to form a nanomaterial ribbon pattern.

Nanomaterial ribbon patterning method and nanomaterial ribbon pattern manufactured thereby

Growing community of inventors

Daejeon, South Korea

Hyun June Jung