Abstract:
PURPOSE: A stent, a surface coating method of the same, and a surface coating device of the same are provided, which can extend lifetime of a stent coated with a carbon thin film by improving interfacial adhesion. CONSTITUTION: A surface coating device of a stent comprises: a chamber(210) equipped with an internal space; a substrate(220) for settling a stent, which is installed inside the chamber; an ion beam irradiation unit(230) which irradiates an ion beam in order to coat a diamond-like carbon film layer on the surface of the stent; and a sputtering unit(240) for vaporizing the buffer layer on the surface of the stent before the coating of the diamond-like carbon film layer.
Abstract:
A diamond-like carbon film with a nano-undulated surface is provided to reduce the humidity dependence of friction coefficient due to the characteristics of the nano-undulated surface suppressing tribo-chemical reaction in the transition layer. A diamond-like carbon film has a nano-undulated surface which is formed on a nano dot pattern of a substrate, with RMS surface roughness of 5nm to 50nm. The nano dot pattern is made of metal selected in the group consisting of nickel, cobalt, chrome, iron, zinc, copper, gold, silver, molybdenum, palladium and platinum, and its diameter is 20nm to 800nm. The diamond-like carbon film with the nano-undulated surface is formed by RF-PACVD(Radio Frequency-Plasma Assisted Chemical Vapor Deposition) using methane gas as reaction gas.
Abstract:
본 발명은 비자성 또는 자성 반도체에 특정한 스핀 방향을 가진 전자를 주입할 때 높은 스핀주입 효율을 나타낼 수 있는 다층막 구조 및 그 제조방법에 관한 것으로, 보다 상세하게는 전이금속 질화물 중 전도성 질화물인 TiN, TaN, NbN, ZrN 등을 강자성 물질과 반도체 물질의 사이층으로 사용한 다층막 구조 및 그 제조방법에 관한 것이다. 본 발명에 의한 다층막 구조는 강자성 물질/반도체의 접합에서 나타나는 쇼트키 장벽(Schottky Barrier), 전도도 불일치(Conductivity Mismatch), 그리고 계면 형상의 불균일성을 나타내지 않으며, 높은 스핀주입 효율을 달성한다. 따라서 본 발명에서 얻어진 다층막 구조를 이용하면 종래의 강자성 물질/반도체 접합에 비해 더 높은 스핀주입효율을 가진 소자를 제조할 수 있는 장점이 있다. 스핀주입, 전도성 질화물, 사이층, 다층막 구조, 스핀전자소자, 스핀 반도체, 반금속
Abstract:
A structure of a multiple layer is provided to obtain a high spin injection efficiency when electrons having a specific spin direction are injected into a non-magnetic or magnetic semiconductor by using a conductive nitride as a spacer layer. A spacer layer(2) is formed on a semiconductor layer, made of a conductive nitride. A spin injection electrode layer(1) is formed on the conductive nitride spacer layer, made of a ferroelectric material. Transition metal can be doped into the conductive nitride spacer layer. The conductive nitride can be made of one selected from a group of TiN, TaN, NbN and ZrN.
Abstract:
PURPOSE: To provide a method for fabricating a rigid carbon nanocomposite thin film comprising a nano sized graphite phase material in a diamond-like amorphous carbon thin film by depositing carbon after forming nano-dots of reactive materials, a rigid carbon nanocomposite thin film fabricated by the method, and a method for controlling size of graphitized portion by controlling size of metal dots. CONSTITUTION: In a rigid carbon thin film comprising a diamond-like amorphous carbon thin film having high electrical resistance and low electrical conductivity, and a graphite phase portion having low electrical resistance and high electrical conductivity formed to a nano-size formed in the diamond-like amorphous carbon thin film, the rigid carbon nanocomposite thin film is characterized in that it is consisted of the same element and has partially different electrical conductivity.
Abstract:
PURPOSE: An EMC(Epoxy Molding Compound) mold for encapsulating hard carbon film coated semiconductor and a coating method thereof are provided to be capable of improving the productivity of a molding process. CONSTITUTION: A tool steel material EMC mold for encapsulating semiconductor is made of a mold and a hard carbon film coated on the surface of the mold. At this time, the hard carbon film contains a predetermined hydrogen content in the range of 1 at.%, or less. Preferably, the hard carbon film has a thickness of 0.5-5 μm. Preferably, the hard carbon film has the predetermined rate for sp¬3 hybridized bond in the range of 60-90 %.
Abstract:
본 발명은 고 경도 다이아몬드상 경질 카본 필름인 제 1코팅층 위에 저경도의 다이아몬드상 경질 카본 필름인 제 2코팅층이 합성되는 서로 다른 특성의 이중 막으로 코팅되는 헤드 드럼에 관한 것이다. 제 2코팅층의 경도는 제 1코팅층의 경도보다 작다. 상기 이중 코팅은 헤드 드럼이 적층되고 전원 전극에 부착되는 시편 지지대, 적층된 헤드 드럼의 표면으로부터 선정된 거리만큼 떨어진 동심원 상에 배치된 원형의 접지 전극을 포함하는 반응기를 갖고 있는 합성 장치에 의해 달성되며, 상기 시편 지지대는 헤드 드럼을 안정하게 적층하기 위한 공간 보상용 링을 포함한다.
Abstract:
An apparatus and method for mass composing a coated layer for a circle substrate capable of mass coating a circle substrate by using a high frequency chemical vapor deposition method are discolsed. The composing apparatus includes a reactor(20-1), a power source system(20-2), a gas supply source system(20-3), and a vacuum system(20-4). The power source system(20-2) includes a plurality of high frequence power source(S1-S6). The reactor(20-1) includes a plurality of power apply electrodes, a plurality of sample support members(11b), and a plurality of grounds(13). The plurality of power apply electrodes are connected to high frequency power sources which are different from one another.