Abstract:
PURPOSE: A method for growing carbon nanoflakes and a carbon nanoflake structure formed by the same are provided to enable a user to easily grow nanoflakes without an additional catalyst or plasma. CONSTITUTION: A method for growing carbon nanoflake comprises the steps of: preparing a silicone substrate equipped with carbon nanotubes; growing carbon nanoflakes on carbon nanotubes in a chemical vapor-deposition process using the mixing gas of methane, hydrogen and argon as a precursor. In the chemical vapor-deposition process, argon is excessive in the mixing gas of methane, hydrogen and argon. Graphene layers constituting carbon nanotubes are partially etched in an argon-excessive atmosphere. Graphene layers of carbon nanoflakes grow at the position of etching. [Reference numerals] (CNT,CNF) Graphene layer
Abstract:
PURPOSE: A method for manufacturing a nano-crystalline diamond thin film is provided to maximize the electrostatic attraction between the substrate surface and the nano-diamond particles, thereby uniformly distributing and coupling the nano-diamond particles on the silicon oxide film of the substrate. CONSTITUTION: A method for manufacturing a nano-crystalline diamond thin film comprises the following steps. A silicone substrate surface coated with a silicon oxide film (SiO2) is processed with the hydro plasma or the plasma mixed with hydrogen and hydrocarbon or the silicone substrate surface is heat-treated under the mixed gas atmosphere with the hydrogen and hydrocarbon. After the coated substrate is put in the solution in which nano-diamond particles are dispersed, the nano-diamond particles are scattered on the substrate and are coupled with the substrate surface by emitting ultrasound. In a state where the nano-diamond particles are coupled to the substrate through the ultrasound scattering step, the diamond thin film is grown by applying the process of chemical vapor deposition.
Abstract:
PURPOSE: A diamond heat spreader and a manufacturing method thereof are provided to maximize heat conductivity by increasing a ratio of columnar particles which are horizontally arranged on a substrate. CONSTITUTION: The cross section of a diamond crystal structure has a radial columnar structure. Columnar particles are radially arranged on the radial columnar structure. Each radial columnar structure is grown around a seed point by a chemical vapor deposition process. The seed point is locally formed on the substrate. Diamond particles are separately arranged on the substrate. [Reference numerals] (AA) Radial columnar tissue; (BB) Diamond columnar particle; (CC) Grain boundary; (DD) Substrate; (EE) Seed point
Abstract:
PURPOSE: A local surface plasmon resonance (LSPR) sensor using a chalcogenide material and a manufacturing method thereof are provided to control a composition ratio of a chalcogenide material forming an LSPR excitation layer, thereby variously changing the carrier concentration of the LSPR excitation layer. CONSTITUTION: An LSPR sensor using a chalcogenide material includes an LSPR excitation layer formed of a chalcogenide material. The chalcogenide material includes a first material and a second material. The first material includes at least one among selenium and tellurium. The second material includes at least one among germanium and antimony.
Abstract:
PURPOSE: A cBN(cubic Boron Nitride) film and a manufacturing method thereof are provided to restrict harmful effects on the surface of nano-crystalline diamond and the residual stress applied to cBN by adding hydrogen in reactive gas and controlling the timing of hydrogen supply during synthesis of cBN. CONSTITUTION: A method for manufacturing a cBN film is as follows. A cBN film is formed on a nano crystalline diamond film through a PVD(Physical Vapor Deposition) process. In the PVD process, reactive gas supplied at the timing of film deposition is a mixed gas of Ar and N2. H2 is added to the reactive gas at a specific time after the film deposition.
Abstract:
본 발명은 모재와 그라핀이 화학적으로 결합된 그라핀 하이브리드 물질 및 화학기상증착(CVD)법을 이용하여 상기 그라핀 하이브리드 물질을 제조하는 방법에 관한 것으로서, 표면에 단절된 격자 면을 갖는 모재와, 상기 모재 표면의 단절된 격자 면을 따라 에피택셜 성장된 그라핀을 포함하여 이루어진 것을 특징으로 하는 그라핀 하이브리드 물질을 제공한다. 본 발명에 의하면 그라핀을 직경 8 인치 이상의 대면적으로 제조할 수도 있다. 본 발명에 따른 그라핀 하이브리드 물질은 체내 이식형 바이오칩, 차세대 반도체 소자, 전자 에미터 등과 같은 탄소나노튜브의 응용 분야에 사용될 수 있다. 본 발명의 그라핀은 나노 사이즈보다 작은 분자 수준으로 제어될 수 있으므로, 탄소나노튜브보다 더 뛰어난 특성을 발휘한다. 또한, 그라핀 간 거리가 흑연의 것보다 10∼20% 큰 특성을 이용하면, 그라핀은 다양한 GIC (Graphite Intercalation Compound) 신물질 개발에 응용될 수 있다. 그라핀, 탄소, 분자, 나노, CVD 합성, 다이아몬드, 하이브리드 물질
Abstract:
PURPOSE: A ceramic body coated with a diamond film, and a manufacturing method thereof are provided to induce the strong mechanical bond between the ceramic body and the diamond film by forming uneven embossments. CONSTITUTION: A manufacturing method of a ceramic body coated with a diamond film comprises the following steps: forming a surface layer by spreading a mixture composition including ceramic particles and a matrix phase on the ceramic body; forming uneven embossments on the surface layer by removing the matrix phase; and adhering the diamond film on the surface layer. The surface layer contains 50~90% of ceramic particles. The surface layer is formed by a bonding reaction, a sintering reaction, or a crystallization reaction. The matrix phase is removed by a wet etching, a dry etching, or a sand blast.