Abstract:
본 발명은 스크린 프린팅에 의한 고밀도 세라믹후막 제조방법에 관한 것으로, 유기 바인더 및 용제로 구성된 비이클을 제조하고, 상기 비이클에 세라믹 분말을 분산시켜 페이스트를 제조하고, 상기 페이스트로 스크린 프린팅법에 의해 일정한 두께의 후막을 프린팅하고, 프린팅된 후막을 건조한 후 유기바인더를 제거하고, 프린팅된 후막 표면에 졸 또는 졸과 유사한 용액을 도포하여 상기 후막으로 스며들도록 함침시키고, 상기 후막을 스피닝하여 여분의 졸 또는 졸과 유사한 용액을 제거하고, 상기 후막을 건조하여 중간 열처리를 하고, 상기 후막을 소결하는 단계를 포함하여 이루어지는 스크린 프린팅에 의한 고밀도 세라믹후막 제조방법을 제공한다. 본 발명에 의하면 패터닝 공정이 필요없이 기존의 스크린 프린팅 방법을 이용하여 저온에서 보다 치밀한 세라믹 후막을 원하는 패턴 크기로 제조하는 것이 가능하다. 따라서 저온소결 및 후막의 치밀화로 인하여 압전 소자및 초전 소자 등의 마이크로 디바이스 제조에 유용하게 이용될 수 있다.
Abstract:
PURPOSE: A method for manufacturing ZnO film for an infrared light receiving and emitting device operated at normal temperature and an apparatus therefor are provided to replace GaN by manufacturing ZnO film at lower costs. CONSTITUTION: The method for manufacturing ZnO film for the infrared light receiving and emitting device operated at normal temperature includes following steps. At first, a gas including Ar and O2 gases at predetermined ratio in a vacuum chamber to maintain the vacuum level lower than 1 to 500mTorr. Then, the substrate is pre-heated. At third, C and N are induced from an atom radicals implemented on the substrate and a ZnO single crystal film is vaporized on the substrate(3) by using an RF magnetron sputtering method. At third, the partial pressure of the oxygen in the chamber used while vaporizing ZnO film is maintained while the substrate is cooled down slowly. The Ar/O2 ratio is much less than 4/1. Alternatively, the Ar/O2 ratio is much less than 4/1.
Abstract translation:目的:提供一种用于制造在常温下工作的红外光接收和发射装置的ZnO膜的方法及其装置,以较低成本制造ZnO膜来代替GaN。 构成:在常温下工作的红外光接收和发射装置的ZnO膜的制造方法包括以下步骤。 首先,在真空室中以预定比例包括Ar和O 2气体的气体以保持真空度低于1至500mTorr。 然后,将衬底预热。 第三,通过使用RF磁控溅射法,在基板上实现的原子自由基诱导C和N,并在基板(3)上蒸发ZnO单晶膜。 第三,在使衬底缓慢冷却的同时保持在蒸镀ZnO膜时使用的室中的氧的分压。 Ar / O2比值远低于4/1。 或者,Ar / O 2比远小于4/1。
Abstract:
PURPOSE: A method for manufacturing a multicomponent oxide ferroelectric thin film including a volatile component is provided to control loss of a volatile component generated in forming the multicomponent oxide thin film by using a radio frequency(RF) magnetron sputtering method. CONSTITUTION: A target(15) composed of a multicomponent oxide material is sputtered to form a multicomponent oxide thin film on a substrate by a radio frequency(RF) magnetron sputtering method. A vacuum chamber where the sputtering process is performed is maintained at a pressure from 200 to 300 milli Torr to reduce loss of a volatile component of the thin film during the sputtering process.
Abstract:
PURPOSE: Structure of an electrode is provided to improve the accuracy of gas sensing, a recovery speed, and responsiveness and to produce a reproducible electrode. CONSTITUTION: A semiconductor type gas sensor includes: a substrate(1); a lower electrode(2') formed on the upper face of the substrate in a specific pattern; a thin and thick type semiconductor material sensing film(3) formed on the upper face of the substrate whereon the lower electrode is formed; an upper electrode(2") formed on the upper face of the sensing film in a specific pattern; a heater formed in the lower face of the substrate; and an insulating material formed on the lower face whereon the heater is formed. Herein, the upper and lower electrodes are formed in an I shape of a thick or thin film, and made of different materials. With simple change of the position and shape of an electrode without an additional device, the accuracy of gas sensing, a recovery speed, and responsiveness are enhanced. Additionally, a reproducible electrode is provided.
Abstract:
PURPOSE: Provided is a plasma polymerization for forming a polymer with hydrophilicity or hydrophobicity on a surface of a material by using a DC discharge plasma or an RF discharge plasma. CONSTITUTION: A method for surface processing by plasma polymerization of a surface of a metal, for enhancing its usefulness in a refrigerating and air-conditioning apparatus by using a DC discharge plasma, comprises the steps of: (a) positioning an anode electrode which is substantially of a metal to be surface-modified and a cathode electrode in a chamber; (b) maintaining a pressure in the chamber at a predetermined vacuum level; (c) blowing a reaction gas comprising an unsaturated aliphatic hydrocarbon monomer gas at a predetermined pressure and a non-polymerizable gas at a predetermined pressure into the chamber, the non-polymerizable gas being 50-90% of the entire reaction gas; and (d) applying a voltage to the electrodes in order to obtain a DC discharge, whereby to obtain a plasma consisting of positive and negative ions and radicals generated from the unsaturated aliphatic hydrocarbon monomer gas and the non-polymerizable gas, and then forming a polymer with hydrophilicity on the surface of the anode electrode by plasma deposition.
Abstract:
PURPOSE: A polymer culture dish having an improved hydrophilic property and surface adhesiveness is provided which a part of carbon of the activated surface is reacted with a reactive gas after activating the surface by irradiating less than 2,000 eV of ion-beam. CONSTITUTION: A surface modifying apparatus comprises a gas inlet part(20) introducing a reactive gas into a vacuum chamber(10), an ion source(30) producing ion beam, a substrate holder(40) and a vacuum pump(50). The polymer culture dish is built in the substrate holder(40) and the reactive gas is introduced into the vacuum chamber(10) through the gas inlet part(20). Ion-beam having less than 2,000 eV is irradiated to activate the surface of the polymer culture dish from the ion source(30). The surface of the polymer culture is reacted with the reactive gas such as oxygen, nitrogen, carbon dioxide, carbon monoxide, ozone and their mixed gas to produce a hydrophilic group on the surface.
Abstract:
본 발명은 코디어라이트(2Al 2 O 3 -2MgO-5SiO 2 ) 분말을 9wt% 이하로 함유하며, 안정화 또는 부분안정화 지르코니아로 이루어지는 다공성 세라믹스 확산장벽용 조성물로 된 확산장벽층을 가지는 내열특성이 개선되고 센싱 전류 범위가 넓은 산소센서 및 그것의 제조방법에 관한 것이다. 본 발명의 방법으로 제작된 다공성 세라믹스 확산장벽용 조성물을 이용하여 제조한 산소센서는 공해방지기기, 자동차나 보일러 등의 연료절감 및 열효율 향상 시스템 및 휴대용 산소분석기 등의 다양한 분야에 응용할 수 있다.
Abstract:
본 발명은 마이크로파 대역에서 높은 품질 계수와 유전율을 가지며 공진 주파수의 온도 계수가 안정한 고주파용 유전체 자기 조성물로서, (1-x)(La 1/2 Na 1/2 )TiO 3 -xCa(Fe 1/2 Nb 1/2 )O 3 (식중, 0.4 ≤ x ≤ 0.7)로 나타내지는 고주파용 유전체 자기 조성물에 관한 것이다. 이 조성물은 Ca(Fe 1/2 Nb 1/2 )O 3 의 함량을 조절함으로써 공진 주파수의 온도 계수의 조정이 용이해서, 유전체 공진기 소재로서의 응용이 적합하다.