Abstract:
본 발명은 유전율이 높은 이트륨옥사이드(Y 2 O 3 )를 함유하는 잉크젯 프린트용 유전잉크 조성물과 그의 제조방법에 관한 것으로, 본 발명에 따른 유전잉크 조성물은 폴리머 기질 내에 높은 유전상수와 낮은 누설전류값을 갖는 이트륨옥사이드(Y 2 O 3 )가 균일하게 분산되어 있어 잉크젯 프린트용 유전잉크의 유전율을 향상시킬 수 있다. 따라서 본 발명에 따른 유전잉크 조성물은 우수한 유전율을 갖는 인쇄소자용 유기 절연막 소재의 개발에 유용하게 적용될 수 있다. 이트륨옥사이드, 잉크젯 프린트, 유기 절연막, 유전잉크
Abstract:
Provided are a composite dielectric membrane which is increased in dielectric constant and is reduced in dielectric loss, its preparation method, a capacitor containing the membrane, and a transistor containing the membrane. The composite dielectric membrane comprises a polymer substrate; and a ceramic having a pyrochlore structure which is filled in the polymer substrate. Preferably the polymer is at least one selected from polyimide, epoxy, polyacrylate, polyethylene terephthalate and benzocyclobutane, and the polymer substrate is obtained by dissolving the polymer in an organic solvent such as dimethyl acetamide. Preferably the ceramic having a pyrochlore structure comprises Bi2(Zn1/3 Nb2/3)2O7, Bi1.5 Zn M1.5 O7, (Bi)_(1-x) (Zn, Nb, Ta, Ti)x O7, (Ca, Ba, Sr, Pb)_(1-x) (Zn, Nb, Ta, Ti, Zr)x O, or (Ca_(1-x) Sr_x) Bi4Ti4O15, wherein M is Nb, Ta or Sb.
Abstract translation:本发明提供介电常数增加且介电损耗降低的复合介电膜,其制备方法,包含该膜的电容器以及包含该膜的晶体管。 该复合介质膜包括聚合物基底; 和填充在聚合物基材中的具有烧绿石结构的陶瓷。 优选聚合物为选自聚酰亚胺,环氧树脂,聚丙烯酸酯,聚对苯二甲酸乙二醇酯和苯并环丁烷中的至少一种,聚合物基材通过将聚合物溶解在有机溶剂如二甲基乙酰胺中而获得。 优选地,具有烧绿石结构的陶瓷包括Bi 2(Zn 1/3 Nb 2/3)2 O 7,Bi 1.5 Zn 1.5 O 7,(Bi)(1-x)(Zn,Nb,Ta,Ti)x O 7,( Ca,Ba,Sr,Pb)_(1-x)(Zn,Nb,Ta,Ti,Zr)x O或(Ca_(1-x)Sr_x)Bi4Ti4O15,其中M为Nb,Ta或Sb。
Abstract:
본 발명은 나노미터 크기의 균일한 직경을 갖는 단결정 탄화규소 나노섬유 및 이의 제조방법에 관한 것으로, 본 발명에 의해 제조된 탄화규소 나노섬유는 높은 비표면적과 우수한 열적, 기계적 안정성을 가져 고온 안정성이 요구되는 배기가스 정화시스템, 탄화규소 섬유 필터, 디젤 미립자 필터 등의 다양한 분야에 응용될 수 있다.
Abstract:
PURPOSE: A nanofiber composite and a producing method thereof are provided to synthesize the nanofiber composite with the multi-functionality and the excellent crystallinity. CONSTITUTION: A nanofiber composite contains a first metal oxide nanofiber, and second metal oxide nanoparticles attached to the first metal oxide nanofiber. The second metal oxide nanoparticles reciprocally coagulated with each other to form a cluster. A producing method of the nanofiber composite comprises the following steps: mixing a metal salt precursor, a polymer, and a solvent to obtain a mixed solution(S10); dispersing the metal oxide nanoparticle in the mixed solution for obtaining suspension(S20); spinning the suspension for obtaining a nanofiber(S30); and heat-processing the nanofiber(S40).
Abstract:
PURPOSE: Nano powder, nano ink, micro rods, and a method for manufacturing the same are provided to obtain the improved interface property and deposit a high density thin film by forming nano-clusters. CONSTITUTION: A spinning solution including one or more kinds of precursors which is selected from a group including metal, non-metal, metal compounds, metal oxides, non-metal oxides, and composite metal oxides. The spun precursor is crystallized or amorphoused to form nano-fiber(10) including one or more kinds of nano-particles selected from a group including metal, non-metal, metal compounds, metal oxides, non-metal oxides, and composite metal oxides. The nano-fiber is pulverized to form nano-powder including nano-particles, nano-clusters(11b), or the mixture of the same.
Abstract:
본 발명은 중공형의 금속산화물 튜브들을 포함하는 금속산화물층을 구비하는 전기화학소자 및 그 제조방법에 관한 것으로서, 본 발명은 기판과; 상기 기판 상에 형성되며, 금속산화물을 포함하여 이루어지고 내경이 20 ㎚ - 3000 ㎚인 중공형 튜브들을 포함하는 금속산화물층;을 포함하여 이루어진 것을 특징으로 하는 전기화학소자를 제공한다. 여기서, 상기 금속산화물층은 상기 기판 상에 형성되며 상기 금속산화물을 포함하여 이루어진 바닥층과, 상기 바닥층 상에 일체로 결합하도록 형성되며 상기 중공형 튜브들이 서로 뒤얽혀 형성하는 3차원의 다공성 웹층을 포함할 수 있다. 또한, 본 발명은 (1) 용매에 고분자가 용해된 고분자 용액을 준비하는 단계; (2) 기판 위에 상기 고분자 용액을 전기장 하에서 방사하여, 고분자 섬유들이 뒤얽힌 고분자 섬유 웹을 형성하는 단계; (3) 상기 고분자 섬유 웹이 형성된 기판 상에 금속산화물을 증착하는 단계;와 (4) 상기 (3)단계를 거쳐 금속산화물이 증착된 기판을 열처리하여, 상기 고분자 섬유들을 제거하는 단계;를 포함하는 전기화학소자 제조방법을 제공한다. 금속산화물, 중공형 튜브, 다공성 웹층, 전기화학소자
Abstract:
PURPOSE: A transistor using a polymethylmethacrylate thin film is provided to improve the stability of a device by using a polymethylmethacrylate thin film as a gate insulation layer and an organic protection layer. CONSTITUTION: A gate electrode is formed on a substrate. A gate insulation layer includes a gate electrode and a polymethacrylic acid thin film formed on the substrate. A channel layer is formed on the gate insulation layer. A source electrode and a drain electrode are formed to expose a part of the channel layer. The organic protection layer includes a polymethacrylic acid thin film formed on the partially exposed channel layer, the source electrode, and the drain electrode.
Abstract:
PURPOSE: An yttrium oxide-containing dielectric ink composition is provided to improve dielectric constant by uniformly dispersing yttrium oxide(Y2O3) with high dielectric constant and low leakage current value. CONSTITUTION: An yttrium oxide-containing dielectric ink composition has one morphology of a rice grain, thin film and rod. The yttrium oxide has a uniform particle size of 50 - 500 nm. The yttrium oxide is surface-modified and crosslinked with a coupling agent. The coupling agent is selected from the group consisting of polymelamine-co-formaldehyde, 3-APTS(aminopropyltriethoxy-silane), INAAT(isopropyltris N-aminoethyl-aminoethyl titanate) and PMAA(polymethaccrylic acid).
Abstract:
PURPOSE: A method for manufacturing silicon carbide nanofiber using an emulsion electro-spinning method and the silicon carbide nanofiber manufactured by the same are provided to improve the specific surface area and thermal-mechanical stability of the silicon carbide nanofiber by thermally treating complex nanofiber in a core-shell structure. CONSTITUTION: Complex nanofiber in a core-shell structure includes a fibrous core containing a silicon carbide precursor and a shell containing a water soluble polymer. Mono-crystalline silicon carbide nanofiber is obtained by thermally treating the complex nanofiber. A method for manufacturing the silicon carbide nanofiber includes the following: A solution containing a silicon carbide nanofiber is prepared by dissolving a silicon carbide precursor in a non-polar solvent. A surfactant, a polar solvent, and a water soluble polymer are mixed with the solution containing the silicon carbide nanofiber to obtain an oil-in-water emulsion for electrospinning(a). The oil-in-water emulsion is electrospun to obtain the complex nanofiber(b). The complex nanofiber is thermally treated to obtain the silicon carbide nanofiber(c).
Abstract:
PURPOSE: An electro-chemical device including metal-oxide layer of hollow tube and a fabrication method thereof are provided to improve the efficiency of electric chemical component by forming a three dimensional porosity web layer with hollowed tubes to maximize the specific surface area by the shape of the hollowed tubes and the space between the metal oxide tubes. CONSTITUTION: A metal oxide layer is formed on the top of the substrate. The metal oxide layer(15) comprises hollowed tubes which have the inner diameter of 20nm - 3000nm. The bottom layer is formed on the top of the substrate, and includes the metal oxide.