Abstract:
A method of manufacturing the metallic silicide layer using the plasma atomic layer deposition is provided to form the metal silicide without the thermal process and to maintain the thermal stability of the device structure. The metallic silicide layer is manufactured by the PE-ALD(plasma-enhanced atomic layer deposition) method. Firstly, the metal precursor is put into in the atomic layer deposition equipment. The metal precursor is absorbed on the semiconductor substrate. The evaporated metal precursor is reduced to metal by the gas plasma. The reducing metal reacts to the material including silicon to form the metal silicide. The material including silicon can be silane. The metal precursor can be the cobalt precursor, and the titanium precursor or the nickel precursor.
Abstract:
A transistor using deformation caused by piezoelectric effect of a carbon nano tube is provided to obtain a transistor of a new concept using deformation of a carbon nano tube caused by deformation of a piezoelectric device by using a device of a several nano meter using a carbon nano tube. A piezoelectric device(6) is disposed at one side of a carbon nano tube(5) so that the carbon nano tube is deformed by contraction or expansion of the piezoelectric device. A switching process is performed by a difference of specific resistance of the carbon nano tube generated by a deformation quantity of the carbon nano tube caused by the contraction or expansion of the piezoelectric device. The piezoelectric device can be a shape memory piezoelectric actuator.
Abstract:
Provided is a method of manufacturing a sensor structure, where vertically-well-aligned nanotubes are formed and the sensor structure having an excellent performance can be manufactured at the room temperature at low cost by using the nanotubes. The method of manufacturing a sensor structure includes: (a) forming a lower electrode on a substrate; (b) forming an organic template having a pore structure on the lower electrode; (c) forming a metal oxide thin film in the organic template; (d) forming a metal oxide nanotube structure, in which nanotubes are vertically aligned and upper portions thereof are connected to each other, by removing the organic template through a dry etching method; and (e) forming an upper electrode on the upper portions of the nanotubes.
Abstract:
본 발명은 종류가 다른 두 층의 강유전체 박막을 적층 할 때 발생하는 임프린트(imprint) 현상을 이용하여, 인가 전기장의 방향에 따라 두 가지의 다른 크기를 갖고 외부의 전원이 없이도 형상이 기억되는 형상 기억(shape memory) 방법 및 이를 이용한 소자에 관한 것이다. 강유전체에 임프린트 현상이 발생할 경우, 외부의 전기장이 가해지지 않더라도 즉 외부 전원이 없더라도, 두 가지의 서로 다른 크기의 압전 성질을 갖게 되며, 이는 내부의 전기적 불균형에 의한 것이다. 본 발명은 종류가 다른 두 층의 강유전체 박막 구조와 형성된 두 층으로 이루어진 강유전체 박막 구조와 형성된 박막 구조의 박막 두께 비 조절을 통해, 내부의 전기적인 불균형의 조절이 가능하도록 한 것을 특징으로 한다. 다층 박막, 강유전체, 임프린트, 형상 기억
Abstract:
본 발명은 균일하며 높은 정렬도를 갖고 다양한 형상으로 구현될 수 있는 나노 구조물의 제조방법을 제공하는 것을 목적으로 한다. 상기 목적을 달성하기 위해 본 발명은 (a) 산 용액에 기판을 투입하고 상기 기판상에 알루미늄을 양극산화시킴으로써, 상기 기판의 표면으로부터 수직하게 나노 크기의 구멍이 형성된 산화 알루미늄 나노 템플릿을 형성하는 단계와; (b) 원자층 증착법을 이용하여, 상기 나노 구조물을 이루는 물질로 상기 나노 템플릿에 형성된 구멍을 채우는 단계와; (c) 상기 산화 알루미늄을 제거하는 단계를 포함하는 나노 구조물의 제조방법을 제공한다. 본 발명에 따른 나노 구조물의 제조방법은 대면적으로 제조가능하며, 환경 센서나 바이오 센서로의 응용이 직접적으로 가능할 뿐 아니라, 메모리 축전기의 제작이나 연료 전지용 전극 분야 등 다양한 분야에 응용이 가능하다. 자기 조립 나노 템플릿, 양극 산화 알루미늄, 원자층 증착, 나노 구조물, 환경 센서, 바이오 센서, 대면적 공정
Abstract:
PURPOSE: A method for coating a titania thin film on the surface of a metal is provided to rapidly coat the titania thin film on the surface of the metal while preventing faults such as crack and a pin hole from being generated on the surface of the metal. CONSTITUTION: A method for coating a titania thin film on the surface of a metal comprises the following steps: washing a metal surface; and forming the titania thin film on the metal surface through a plasma-enhanced atomic layer deposition. The titania thin film has TDMAT(Trakisdimethylamidotitanium) as a precursor. The titania thin film is deposited using oxygen of plasma state as a reactive group. The deposition method comprises: a step injecting the TDMAT on a heated metal surface; a purging step for eliminating remaining precursor; injecting oxygen of plasma state to react with the TDMAT; and the purging step for removing remaining gas and by-products.
Abstract:
A ferroelectric thin film and a shape memory device using the same indicating the shape memory formation method of the ferroelectric thin film are provided to control an imprint phenomenon to ferroelectric. A shape memory formation method of a ferroelectric thin film is as follows. The imprint phenomenon that laminates the ferroelectric is used. According to the direction of the applied electric field, it has the other size of two kinds of and the shape is memorized without the external power supply. The thickness-chord ratio of the thin film comprising 2 layer is controlled.