Abstract:
PURPOSE: A photopolymerizable negative photoresist modified polymer and an inorganic polymer-type negative photoresist composition including the same are provided to enable mass production of inorganic polymer pattern and structure with size of maximum 1cm and minimum 10nm. CONSTITUTION: A photopolymerizable negative photoresist modified polymer is prepared by reaction of a polymer including a repeating unit represented by -(Si(Ra)2-NH)n- or -(Si(NHRd)(Rb)-O)m-(Si(Rc)2-O)k- with a diacryl compound of chemical formula 2. In chemical formula, Ra, Rb and Rc are independently selected from H, ORd, NHRd, vinyl or C1~C10 low alkyl group; Rd is H or C1~C10 linear or branched low alkyl group; n, m and k are an integer of 1 ~ 200.
Abstract:
본 발명은 탄소주형체 희생체법을 이용한 리튬코발트산화물계 속빈 구 나노 구조체 및 그 제조방법에 관한 것으로, 상세하게는 실리카 주형체를 제조하고, 제조된 실리카 주형체를 페놀레진의 테트라하이드로퓨란 40wt% 용액으로 함침시킨 후, 열처리 및 실리카 주형체의 제거를 통하여 다공성 탄소주형체를 제조하고, 다공성 탄소 주형체를 리튬이 코발트보다 과량으로 존재하는 리튬/코발트 혼합염 용액으로 함침시킨 후, 하소를 하여 다공성 탄소 주형체에 함침된 리튬/코발트 염을 산화시키고, 산소분위기의 소결 열처리를 통해 탄소 주형체를 제거하여 속빈 구 형태의 리튬코발트산화물 나노 구조체를 제조하는 특징이 있다. 속빈 리튬코발트산화물 구 나노 구조체의 표면적의 범위는 200 m 2 /g 내지 600 m 2 /g 이며, 특히 속빈 150nm 리튬코발트산화물(LiCoO 2 ) 구 구조체의 표면적은 582 m 2 /g 로 매우 큰 표면적을 가지며, 0.2C 일 때 132.78 mAh/g이고 5C 일때 122.0845 mAh/g으로 5C vs 0.2C의 충방전용량 유지 능력은 91.9%로 매우 우수한 충방전 특성을 가지고 있다. 탄소주형체 희생체법, 리튬 2차 전지, 양극 활물질, 리튬코발트산화물계 구 구조체, 리튬코발트산화물 속빈 구 나노 구조체, 3차원 다공성 탄소 주형체
Abstract:
A method of manufacturing lithium cobalt oxide nanostructure having nanoporouscarbon is provided to manufacture a vacant lithium cobalt oxide globe nanostructure of which a diameter is 100nm to 1 mum by using stylolite having various sizes and various shapes. A method of manufacturing lithium cobalt oxide nanostructure having nanoporouscarbon comprises steps of: (a) manufacturing porous carbon stylolite in which air bubble exists; (b) dipping the porous carbon stylolite with lithium/cobalt salt-mixture solution and manufacturing lithium/cobalt-carbon complex; (c) heat-treating lithium/cobalt-carbon complex and manufacturing the lithium cobalt oxide-carbon complex; (d) heat-treating the lithium cobalt oxide-carbon complex in oxidizing atmosphere, removing the porous carbon stylolite and manufacturing the lithium cobalt oxide nanostructure.
Abstract:
PURPOSE: A manufacturing method of inorganic nanomaterial in a super speed or continuous way is provided to use a droplet and ionic liquid assisted microfluidic system for synthesizing multiple inorganic materials in a super speed and continuous way under normal conditions. CONSTITUTION: A manufacturing method of inorganic nanomaterial in a super speed or continuous way comprises the following steps. (a) An ionic liquid is used to form droplets. (b) Inorganic nano-materials are synthesized using the droplets made in the step (a). In step (a), a synthesized solution is supplied in the upper part of the T-junction channel and oil phase is supplied. In step (a), the droplet and inorganic precursor are mixed. In step (b), a reaction step is carried out with aging in a capillary tube reactor. In step (a), the ionic liquid reduces the steam pressure caused by the synthesizing process in the microfluidic system and induces the function of the inorganic nano-material structure. The inorganic precursor dissolves in the ionic liquid and is encapsulated from the T-junction channel into a nano-liter droplet.
Abstract:
본 발명은 화학적, 열적, 기계적으로 안정한 3차원 다층 미세 채널이 형성된 필름형 마이크로 반응기를 생산비용절감 및 단순 공정을 통해 제작하는 방법에 관한 것으로 3차원 다층 미세 채널을 가진 필름형 마이크로 반응기를 형성함에 있어서, 단일 접합공정으로 3차원 미세채널 또는 3차원 다층구조를 형성할 수 있다. 본 발명에 의해 제조되는 3차원 다층 미세채널을 가진 필름형 마이크로 반응기는 플렉서블(flexible)한 특징을 가지고 있으며, 단위 두께 당 종래의 마이크로 반응기보다 많은 양의 미세채널을 포함하여 생산량을 증가시킬 수 있으며, 일련의 반응을 연속적으로 반응할 수 있을 뿐만 아니라, 재순환 반응을 가능하게 함으로써 다양한 3차원 마이크로 반응기의 응용을 제공한다.
Abstract:
PURPOSE: A droplet synthesis of well-defined block copolymers having uniform molecular weight distribution using a chemical-resistant micro fluidic reactor is provided to manufacture block copolymers having high molecular weight and narrow distribution of molecular weight. CONSTITUTION: A droplet synthesis of well-defined block copolymers having uniform molecular weight distribution using a chemical-resistant micro fluidic reactor comprises the following steps: forming a first droplet by injecting a first monomer, RAFT polymeric reagent and initiator into a fluidized bed which is injected into the micro tube of the droplet-based micro fluidic reactor; polymerizing the first droplet; and manufacturing a block copolymer by injecting a second monomer and initiator into the polymerized first droplet. The micro tube micro channel within the droplet based micro fluidic device has the thickness of 1-700 microns and the width of 1-10000 microns.
Abstract:
PURPOSE: A micro-reactor based on a thermoplastic polymer film, and a producing method thereof are provided to offer the stability similar to a conventional micro-reactor using metals, silicon, and glass. CONSTITUTION: A micro-reactor based on a thermoplastic polymer film comprises the following: a fluid insertion unit for inserting fluid for mixing; a fluid mixing unit for mixing the inserted fluid; and a fluid discharging unit for discharging the fluid from the fluid mixing unit. The fluid mixing unit includes a substrate film(10) formed with a thermoplastic polymer film with a micro-hole unit formed by etching the film with a laser beam. A cover film(11) formed with the same or the different thermoplastic polymer film, is laminated on the substrate film.
Abstract:
Hollow metal sphere nanostructures are provided to have a larger specific surface area, and to be usable as drug delivery capsules, bio materials, pigment stabilizers of paints, photonic materials, chemical or biochemical sensors and catalysts. A method for preparing hollow metal sphere nanostructures includes the steps of: manufacturing a silica template comprising silica spheres; manufacturing a carbon-silica composite using the silica template; removing silica from the carbon-silica composite to produce a porous carbon template; impregnating the porous carbon template with an aqueous solution of metal salt; adding a reducing agent to the porous carbon template impregnated with the aqueous solution of metal salt, and reducing the metal salt to produce a metal-carbon composite; and heat-treating the metal-carbon composite in an oxidizing atmosphere to remove carbon from the metal-carbon composite, thereby preparing nanostructures composed of hollow metal spheres. Further, a diameter of a pore of the porous carbon template is 50nm to 1mum.
Abstract:
본 발명은 광가교형 무기고분자형 포토레지스트(photoresist)를 노광 공정(Photolithography), 마이크로 트랜스퍼몰딩(micro-transfer molding; μ-TM), 임프린트 리소그래피 (imprint lithography)공정, 스테레오리소그래피 (stereolithography) 등과 같은 방법으로 각종 기능성 패턴과 구조물을 제조하는 것이다. 성형된 패턴과 구조물은 후경화 혹은 고온 열처리 공정을 거침으로서 화학적, 열적 안정성 및 광투과성을 지닌 무기고분자 혹은 세라믹 조성의 미세유체 패턴과 소자를 제조한다. 또한 유사한 공정을 친수성 고분자에 적용하여 친수성 나노유체 패턴 및 소자를 제조함으로서 향후 각종 MEMS/NEMS소자에 사용한다. 소프트리소그래피, 무기고분자, 세라믹, 세라믹 전구체, MEMS, 미세유체소자, 초친수성 고분자, 나노채널