Ellipsoidal alumina template for preparing nanomaterials and preparation method thereof

Abstract

An ellipsoidal alumina template for preparing nanomaterials and a preparation method thereof. It is characterized in that the inner and outer surfaces of the template are both ellipsoidal surfaces, the conical nanohole array is centered on the long axis of the ellipsoidal surface, arranged radially along the short axis of the ellipsoidal surface, and the diameter and change rate of the conical nanopores are along the meridian of the ellipsoidal surface , the tangential direction of the latitude and the three-dimensional gradient in the vertical direction of the ellipsoid. The preparation method is to obtain the ellipsoidal high-purity aluminum sheet through polishing, anodic oxidation and removal of the barrier layer. The ellipsoidal alumina template in the present invention provides a convenient approach for the synthesis of nanometer materials, and its preparation method is simple and feasible.

Description

Technical field: [0001] The invention relates to an ellipsoidal alumina template for preparing nanometer materials and a preparation method of the template. Background technique: [0002] With the continuous development of science and technology, many new disciplines continue to emerge. Nanomaterials is one example. The preparation of nanomaterials is the basis for the application of nanomaterials. At present, the methods used to prepare nanomaterials are: template method, vapor deposition method, photolithography method, liquid phase method, ion beam etching method and so on. The template method is one of the most basic methods. At present, there are about four mature templates: carbon nanotubes, ion beam etched carbon films, biological micromicelles and alumina templates. Alumina templates have become one of the most widely used templates due to their high pore density and adjustable nanopore aspect ratio (pore length / pore diameter). It is a nano-hole array system obt...

AI Technical Summary

Problems solved by technology

[0003] However, regarding the alumina template, the planar alumina template is currently used, that is, its upper and lower surfaces are flat, which is not conducive to the realization of functional devices of nanomaterials.

Not only that, the nanoholes in the planar alumina template are straight and arranged in parallel, and the nanomaterials assembled with this template have a single function

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