Abstract:
(a) 나노세공(nanopore)을 갖는 주형(template) 또는 막(membrane) 상에 금속산화물(metal oxide) 졸(sol)을 첨가하는 단계; 및 (b) 상기 금속산화물 졸에 와동(swirl)의 축 방향으로 힘을 적용하는 단계를 포함하는 나노구조(nanostructure)를 제조하는 방법 및 이로부터 형성된 나노구조에 관한 것이다. 본 발명의 방법에 따르면, 고 종횡비(high aspect ratio)를 가지는 기능성 금속산화물 나노선(nanowire) 및 나노튜브(nanotube)를 간단하면서도, 재현성이 높고, 짧은 시간에 제조할 수 있다. 나노구조, 나노선, 나노튜브, 종횡비, 금속 산화물, 와동
Abstract:
본 발명은 나노구조체에 전자빔을 조사(irradiation)하는 단계를 포함하는 나노구조체의 형상(shape)을 변화시키는 방법에 관한 것이다. 본 발명에 따르면, 간편한 조작을 통하여 나노구조체의 형상을 조절할 수 있으며, 이는 나노구조체의 나노디바이스로의 적용 가능성을 크게 향상시킨다. 나노구조체, 형상, 변화, 전자빔
Abstract:
Provided is a method for modifying geometry of nanostructures with simple manipulation so that the geometry-modified nanostructures can be used as nanodevices. A method for modifying geometry of nanostructures includes a step of irradiating electron beam to the nanostructures. The nanostructures indicate nano tubes, nano wires, nano rods, nano tetrapods, nano tripods, nano bipods or nano ribbons. The nanostructures are carbon nanotubes, nanostructures of metal, nanostructures of metal oxide or nanostructures of metal oxide complex. The nanostructures are represented by the formual of AxA1-x'ByB1-y'O3. In the formual, A and A' are independently metal elements belonging to a group 2A or 4A; B and B' are independently metal elements belonging to a group 4B.
Abstract:
A method for preparing nanostructures is provided to produce functional metal oxide nanowires and nanotubes having a high aspect ratio with high reproductivity within a short time. A method for preparing nanostructures includes the steps of: (a) adding metal oxide sol to a template or rod having nanopores; and (b) applying force to the metal oxide sol in an axial direction of swirl. The template or rod having nanopores is anodized aluminum oxide, polycarbonate, MCM-41 mesoporous molecular sieve, or polyester. The metal oxide is a composite metal oxide represented by a formula 1 of A_xA_(1-x')B_yB_(1-y')O_3, wherein A and A' are independently a metal element in a group 2A or a group 4A, B and B' are independently a metal element in a group 4B, x is a number ranging from 0 to 1, and y is a number ranging from 0 to 1. Further, the group 2A or the group 4A is selected a group consisting of Ba, Pb and Sr, and the group 4B is Ti or Zr.