Method for transplanting two-sided transparent ultrathin aluminum oxide template to any solid substrate

An alumina template and ultra-thin technology, which is applied in the field of nanomaterial preparation, can solve problems such as the inability to ensure the smoothness of the aluminum surface, the inability to prepare nanoparticle arrays on the substrate surface, and the irregular arrangement of holes.

Inactive Publication Date: 2017-10-20
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the aluminum is plated on the substrate, it cannot be made too thin, and the aluminum surface cannot be guaranteed to be flat
Therefore, the surface of the prepared alumina template is uneven and the arrangement of holes is irregular, and it is impossible to prepare a nanoparticle array with good shape and regular arrangement of holes on the surface of the substrate.

Method used

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  • Method for transplanting two-sided transparent ultrathin aluminum oxide template to any solid substrate
  • Method for transplanting two-sided transparent ultrathin aluminum oxide template to any solid substrate
  • Method for transplanting two-sided transparent ultrathin aluminum oxide template to any solid substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Put the ultra-pure aluminum sheet in 0.4mol / L oxalic acid solution for anodic oxidation, the reaction time is 4h, and the anodic oxidation voltage is 40V. Next, the oxide layer formed by primary anodic oxidation was corroded with a mixed aqueous solution of 1.8wt% chromic acid and 5wt% phosphoric acid at 60° C., and the reaction time was 12 hours. Then put the aluminum sheet into 0.4mol / L oxalic acid solution for secondary anodic oxidation, the reaction time is 5min, and an ultra-thin aluminum oxide layer with a thickness of 400nm is formed on the aluminum substrate.

[0053] Then the solid powder of PMMA is placed in acetone, and the acetone is stirred and heated with a magnetic heating stirrer to obtain a 5wt% PMMA acetone solution. The PMMA solution can be dripped onto the ITO glass surface through a dropper to infiltrate the ITO glass surface. Then place the ultra-thin alumina template with the aluminum-based ultra-thin alumina template on the surface of the ITO gl...

Embodiment 2

[0057] Put the ultra-pure aluminum sheet in 0.4mol / L oxalic acid solution for anodic oxidation, the reaction time is 4h, and the anodic oxidation voltage is 40V. Next, the oxide layer formed by primary anodic oxidation was corroded with a mixed aqueous solution of 1.8wt% chromic acid and 5wt% phosphoric acid at 60° C., and the reaction time was 12 hours. Then put the aluminum sheet into 0.4mol / L oxalic acid solution for secondary anodic oxidation, the reaction time is 5min, and an ultra-thin aluminum oxide layer with a thickness of 400nm is formed on the aluminum substrate.

[0058] Then the solid powder of PMMA is placed in acetone, and the acetone is stirred and heated with a magnetic heating stirrer to obtain a 5wt% PMMA acetone solution. The PMMA solution can be dripped onto the ITO glass surface through a dropper to infiltrate the ITO glass surface. Then place the ultra-thin alumina template with the aluminum-based ultra-thin alumina template on the surface of the ITO gl...

Embodiment 3

[0062] Put the ultra-pure aluminum sheet in 0.4mol / L oxalic acid solution for anodic oxidation, the reaction time is 4h, and the anodic oxidation voltage is 40V. Next, the oxide layer formed by primary anodic oxidation was corroded with a mixed aqueous solution of 1.8wt% chromic acid and 5wt% phosphoric acid at 60° C., and the reaction time was 12 hours. Then put the aluminum sheet into 0.4mol / L oxalic acid solution for secondary anodic oxidation, the reaction time is 5min, and an ultra-thin aluminum oxide layer with a thickness of 400nm is formed on the aluminum base.

[0063] Then the solid powder of PMMA is placed in acetone, and the acetone is stirred and heated with a magnetic heating stirrer to obtain a 5.5 wt% PMMA acetone solution. The PMMA solution can be dripped onto the ITO glass surface through a dropper to infiltrate the ITO glass surface. Then place the ultra-thin alumina template with the aluminum-based ultra-thin alumina template on the surface of the ITO glas...

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Abstract

The invention relates to a method for transplanting a two-sided transparent ultrathin aluminum oxide template to any solid substrate. According to the method, a PMMA solution is used as a binding agent and does not need to be removed, and the problem that PMMA cannot be cleaned up when used as a supporting layer is solved; the ultrathin aluminum oxide template with aluminum bases is transplanted to the substrate at first, and then the aluminum bases are removed, so that the problem that the ultrathin aluminum oxide template is liable to be broken in the transplanting process due to too small thickness of the ultrathin aluminum oxide template is solved; the ultrathin aluminum oxide template transplanted to the surface of the substrate is bound to the surface of the substrate, and the problem that the ultrathin aluminum oxide template is liable to be broken in the blocking layer removing process is solved; and the adopted ultrathin aluminum oxide template has no requirement for the substrate, a nonmetal substrate or a metal substrate or a flexible substrate can be used as the substrate, and thus the application range of the ultrathin aluminum oxide template for preparing nanoparticle arrays is effectively enlarged.

Description

technical field [0001] The invention relates to a method for transplanting an ultra-thin alumina template transparent on both sides to any solid substrate, and belongs to the technical field of nanometer material preparation. Background technique [0002] Nanoparticle arrays have attracted extensive attention due to their periodic structure, high nanoparticle density, and surface plasmon characteristics. Nanoparticle arrays can be used to make solar cells, nanomagnetic energy storage materials, and surface-enhanced Raman scattering substrates. etc., is an important nanomaterial. Among them, the key to making nanoparticle arrays exhibit different properties lies in the substrate on which the nanoparticles are deposited, the arrangement of the nanoparticles, and the type of the nanoparticles. Taking the local field enhancement of the noble metal nanoparticle array as an example, the smaller the distance between the noble metal nanoparticles, the local field enhancement factor...

Claims

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Application Information

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IPC IPC(8): C25D11/12C25D11/18
CPCC25D11/045C25D11/12C25D11/18
Inventor赵艳徐佳宇冯超闫胤洲曾勇蒋毅坚
OwnerBEIJING UNIV OF TECH