Abstract:
A chemical sensor for the hydrazine detection based on the zinc oxide nanostructures is provided to synthesize the ZnO nanostructures according to the thermal evaporation process of being simple without catalyst. A chemical sensor for the hydrazine detection based on the zinc oxide nanostructures comprises Nafion / ZnO structure/ electrode structure and detects the hydrazine by electro-chemical analyzing tri-electrode consisting of working electrode, counter-electrode and reference electrode. The Nafion / ZnO structure/ electrode structure uses the electrode modified using the ZnO nanostructures. The ZnO nanostructures comprises the nano structure like the nanorods of the nano nail or hexagonal.
Abstract:
PURPOSE: A low dielectric SiCFO thin film growth using a plasma-enhanced chemical vapor deposition(PECVD) method is provided to be used as an interlayer dielectric of a metal interconnection, by growing the SiCFO thin film at a low temperature such that the SiCFO thin film has a low dielectric constant and thermal stability. CONSTITUTION: A Si-C-F-O based dielectric thin film having a low dielectric constant(k is from 1.2 to 2.2) is fabricated by a PECVD method. Gas or liquid containing SiCH4, (CH3)3SiC-CSi(CH3)3, £(CH3)3Si|sCH2, £(CH3)3Si|2S, (CH3)3CSi(CH3)2Cl, (CH3)2SiCl2, (CH3)2Si(OC2H5)2, £(CH3)2Si-|n, C2H5SiCl3, (CH3)3SiSi(CH3)3, (CH3)3SiCl, (CH3)3SiOC2H5, (CH3)3SiH, (CH3)3SiCCH, (C5H5)Si(CH3)3, SiF4, COF2, ClF3, C(CF3)2C, CH3F, (CF3)2CO, C2F3N, CF4, NF3, NH3, O2 and O3 is used as a raw material.
Abstract:
본 발명은 P-타입의 ZnO 나노입자 및 이를 제조하는 방법에 관한 것이다. 또한, 본 발명은 상기 P-타입 ZnO 나노입자를 이용하여 전자잉크를 제조하는 방법에 관한 것이다. 본 발명은 1족 원소(Li, Na, K, Rb, Cs, Fr) 또는 5족 원소(P, As, Sb, Bi)들을 도펀트(Dopant)로 이용하여 공정이 단순하고, 신뢰도가 높고, 비용이 저렴한 용액법 기반의 P-타입 ZnO 나노입자 및 그 제조방법을 제공하는 데에 그 목적이 있다. 상술한 목적을 달성하기 위한 본 발명은 상기 원소들로 도핑(Doping)된 P-타입 ZnO 구형 또는 다각형의 나노입자를 제공한다. 본 발명은 아세트산 아연(Zinc Acetate) 수용액에 아세트산(Acetic Acid)을 혼합하는 1단계, 상기 1단계의 결과물을 80℃로 가열하고 환류(Reflux)하는 2단계 및 상기 2단계의 결과물을 80℃로 가열하고 0.1 M 수산화 나트륨(NaOH) 용액을 첨가하는 3단계;를 포함하는 P-타입 ZnO 나노입자 제조방법을 제공한다. 또한, 본 발명은 상기 P-타입 ZnO 나노입자를 소정의 잉크용매와 혼합하여 제조한 전자잉크 및 그 제조방법을 제공한다.
Abstract:
PURPOSE: A selective alignment growth method of a zinc oxide nano pillar array is provided to produce a soft device by utilizing a one-dimension nanostructure and to improve interface adhesive force of a zinc oxide nano pillar. CONSTITUTION: The surface of a substrate(1) is processed with plasma(2). An electrode layer(3) is formed on the substrate. A photoresist layer is formed on the substrate. A negative pattern is formed on the photoresist layer. A seed layer(4) is formed on the electrode layer. A nano pillar is formed on the seed layer.
Abstract:
본 발명은 나노와이어를 포함하는 다양한 구조를 갖는 박막 트랜지스터 및 그 제조 방법에 관한 것이다. 본 발명에 의한 박막 트랜지스터 제조방법은 기판에 절연층을 형성하는 단계와, 절연층 위에 시드층을 형성하는 단계와, 시드층을 부분 식각하기 위한 식각 방지층을 시드층에 도포하는 단계와, 시드층을 부분 식각하는 단계와, 식각된 시드층의 수평 방향으로 나노와이어를 측면 성장시키는 단계와, 식각 방지층을 제거하고 시드층 위에 소스/드레인 중 어느 하나의 전극을 형성하는 단계를 포함한다. 본 발명에 의하면, 크로스링크의 우려가 없는 나노와이어를 반도체 채널층으로 성장시켜 높은 전자이동도를 갖는 다양한 구조의 박막 트랜지스터를 용이하게 제조할 수 있다. 또한 촉매 없이 저온, 대면적 공정에서 나노와이어를 포함하는 다양한 구조의 박막 트랜지스터를 대량으로 제조할 수 있다.
Abstract:
PURPOSE: A micro patterning and device manufacturing method of an Y-Ba-Cu-O superconductor using plasma are provided to improve the characteristics of a transistor by manufacturing an SFFT(Superconducting Flux Flow Transistor). CONSTITUTION: After coating photoresist on the Y-Ba-Cu-O superconducting thin film, the photoresist is exposed and etched by using the first mask. A control current line and a bias current line are patterned by a dry etching process using plasma. An exposing and etching process are carried out for forming a link pattern on the bias current line of the Y-Ba-Cu-O superconducting thin film. Then, the link pattern is formed by a dry etching process using plasma. An SFFT device is completed by forming a metal electrode on the resultant structure.
Abstract:
PURPOSE: An artificial cochlea device for the active feedback controlling and a method thereof are provided to copy the mechanism of an outer hair cell of the cochlea through an actuator which is driven by the sound pressure, thereby classifying and recognizing various sizes of sound by the pressure deviation. CONSTITUTION: A sensor unit senses the vibration by sound, and generates an electric signal corresponding to the size of the vibration. The sensor unit comprises a plurality of operator (230) which moves a frequency dividing unit in response to the electric signal. The operator operates the sensitivity by the size of sound or the selectivity of sound which is sensed by each frequency band. A plurality of operator is arranged separately to a plurality of base unit (216). The plurality of operator is consecutively connected along a first substrate (210) or a second substrate (212). The operator moves up and down by the electric signal which is generated in the base unit and a nanopillar (214).