Abstract:
The present invention relates to a method for coating the surface of a metallic material with a nanostructural metallic oxide into a graded alloy material form using an electrochemical anodic oxidation method, and a graded alloy material and zircaloy nuclear fuel-coated tube manufactured thereby. More specifically, the zircaloy nuclear fuel-coated tube coated with zirconium oxide (ZrO2) can prevent hydrogen explosions from occurring due to loss-of-coolant accidents of a nuclear reactor; can increase the efficiency of neutrons with the small neutron absorption cross section of the zirconium oxide; can prevent embrittlement caused by the permeation of hydrogen in a normal operation; can increase the efficiency of the reactor by increasing the contact surface area between the zirconium oxide and the zircaloy and by improving hydrophilicity through the coating of the nanostructural zirconium oxide; and can prevent detachment caused by vibration and damage to the structure caused by the coefficient difference of expansion in the operation of the reactor by coating the tube with the zirconium oxide in the graded alloy material form.
Abstract:
본 발명은 전자빔 조사를 이용하여 플러렌(C 60 , fullerene) 유도체 중 PCBM ([6,6]-phenyl-C61-butyric acid methyl ester)의 전자 밴드 구조를 조절하는 기술에 관한 것으로, 기존의 복잡하고 다단계로 이루어진 화학적 합성공정을 없앤 전자빔 조사 단일공정만으로 PCBM의 전자 밴드 구조를 변화시킬 수 있고, 조사 변수를 통제함에 따라 전자 밴드 구조를 조절할 수 있는 특징이 있다. 본 발명에 따른 PCBM의 에너지 밴드 구조의 조절에 의하면, PCBM의 LUMO(Lowest Unoccupied Molecular Orbital) 레벨의 상승으로 유기태양전지의 개방전압을 향상시켜 결과적으로 태양전지의 에너지 변환 효율을 증진시킬 수 있다.
Abstract:
PURPOSE: A manufacturing method of carbon nanotube electric field emission electronic beam emitter using metallic binder and a carbon nanotube electric field emission electronic beam emitter using the same are provided to improve wettability with a substrate by forming a wire mesh structure. CONSTITUTION: Carbon nanotubes are refined (S110). The refined carbon nanotubes melt in an evaporable solution (S120). The carbon nanotube solution and metallic binders are mixed. A carbon nanotube paste is manufactured through the mixing process (S130). A cathode substrate is ground through a mechanical and chemical process (S140). [Reference numerals] (AA) Fifth step where the carbon nanotube paste is coated on the cathode substrate by binding it to a paste support substrate in the form of liquid drops; (BB) Sixth step where the carbon nanotube paste-coated cathode substrate is dried and sintered at high temperature; (S110) First step where carbon nanotubes are refined; (S120) Second step where the refined carbon nanotubes melt in an evaporable solution; (S130) Third step where a carbon nanotube paste is manufactured through the mixing process; (S140) Fourth step where a cathode substrate is ground through a mechanical and chemical process
Abstract:
PURPOSE: A manufacturing method of crystalline rubrene thin film is provided to manufacture a crystalline rubrene thin film having high performances by a rapid heating process. CONSTITUTION: A manufacturing method of crystalline rubrene thin film comprises the following step: rapid heating the amorphous rubrene thin film. The rapid heating is operated at a temperature of 150-250 deg. Celsius. The rapid heating is processed by exposing the amorphous rubrene thin film to a pre-heated plate or a preheated furnace, or by directly or indirectly heating the amorphous rubrene thin film. The crystalline rubrene thin film has a thickness of 10-50 nano meters. The organic thin film transistor comprises an organic thin film transistor in which the substrate/active layer/source and drain metal electrode are successively laminated. The active layer is the crystalline rubrene thin film.
Abstract:
PURPOSE: A micro type X-ray tube is provided to improve the output of an X-ray by using a carbon nanotube electric field emission source part which is formed in the flat side of a metal wire. CONSTITUTION: An electronic gun part comprises a cathode electrode, a gate electrode, and an X-ray generation part. A carbon nanotube electronic beam source part is formed in the flat side of a metal wire. The gate electrode(2) is installed to be separated from the cathode electrode. The gate electrode is formed in a direction which is opposite to the cathode electrode. The X-ray generation part(5) is arranged to be separated from the gate electrode. An electric field control electrode is installed in the front side of a getter target.
Abstract:
A method and an apparatus for manufacturing organic luminescent material are provided to change a luminescent color of a luminescent body by controlling irradiation quantity of an electron beam. An apparatus for manufacturing organic luminescent material includes an organic polymer(100), a substrate(200), and an electron beam irradiation device(300). The organic polymer emits or does not emit a light in a visible light range. The organic polymer is positioned on the substrate. The electron beam irradiation device changes the organic polymer into a luminescent polymer(P2) by irradiating an electron beam(E) to the organic polymer on the substrate. The electron beam irradiation device controls energy, current density, and irradiation quantity of the electron beam. The electron beam irradiation device changes a luminescent color of the organic polymer by changing the irradiation quantity of the electron beam. The electron beam irradiation device irradiates the electron beam in vacuum condition.
Abstract:
본 발명은 계층적 기공구조물 및 계층적 기공구조물을 이용한 초소수성 및 초친수성 표면 제조방법에 관한 것으로서, 더욱 상세하게는 전자빔을 조사하여 높은 표면 굴곡을 가지는 마이크로-나노의 복합적인 기공구조와, 표면에너지 증감물질을 이용하여 초친수성 또는 초소수성 물질을 형성할 수 있으며, 전자빔 조사 및 표면에너지 증감물질 처리의 단순 공정으로 초친수성 또는 초소수성 물질을 대량으로 고속 생산할 수 있는 계층적 기공구조물 및 계층적 기공구조물을 이용한 초소수성 및 초친수성 표면 제조방법을 제공하기 위한 것이다. 그 기술적 구성은 기판 표면에 전구체 물질을 일정 두께로 코팅하는 제1 단계; 상기 전구체 물질에 전자빔을 조사하여 전구체 물질에 표면 굴곡이 증가하도록 계층적 기공을 형성하는 제2 단계; 상기 전구체 물질의 표면 에너지를 증감시키는 물질을 이용하여 초소수성 또는 초친수성으로 변경하는 제3 단계; 를 포함하며 이루어지는 것을 특징으로 한다. 마이크로, 나노, 계층적 기공, 초소수성, 초친수성, 표면, 처리
Abstract:
A fabrication method of super hydrophobic and super hydrophilic surfaces using hierarchical pore structure produced by electron beam irradiation is provided to simply control the surface energy of a substrate chemically and physically. A hierarchic pore structure comprises a substrate(10) and a precursor(20). The precursor is formed on the top of the substrate. The precursor includes the hierarchic air bubbles by being irradiated by the electron beam(30). Hierarchic air bubbles increases the surface topology of the precursors. The hierarchic air bubbles are comprised of the air bubbles of microscopic and the air bubbles of nano size. After the electron beam is irradiated, the gradient material(40) of the surface energy is applied to the precursors.