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Binary ordered colloidal crystal, metal nano array and preparation method thereof

A technology of colloidal crystals and metal nanometers, applied in the field of nanomaterials, can solve problems such as not being suitable for industrial production, and achieve the effects of low cost, stable process and high efficiency

Active Publication Date: 2014-07-23
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the existing technical difficulties in the preparation of binary ordered colloidal crystal templates with adjustable spacing and morphology and the corresponding preparation methods of nano-arrays with different shapes and the situation that they are not suitable for industrial production, the present invention aims to solve The problem is to provide a precisely adjustable binary ordered colloidal crystal and correspondingly controllable metal nanoarrays with different shapes and its preparation method

Method used

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  • Binary ordered colloidal crystal, metal nano array and preparation method thereof
  • Binary ordered colloidal crystal, metal nano array and preparation method thereof
  • Binary ordered colloidal crystal, metal nano array and preparation method thereof

Examples

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Effect test

Embodiment 1

[0056] Mix 150 μL of polystyrene nanosphere emulsion with a particle size of 1100 nm (mass fraction 5%) and 10 μL of polystyrene emulsion with a particle size of 120 nm (mass fraction 5%) to form a mixed emulsion. The same volume of absolute ethanol (160 μL) in the mixed emulsion was heated and ultrasonically mixed, the ultrasonic time was 20 min, the heating temperature was 40 °C, and the power was 100 W.

[0057] The silicon wafer substrate was soaked in acetone and absolute ethanol successively, ultrasonicated for 10 min, soaked in SDS for 24 h, and then the substrate was taken out, rinsed with deionized water, and blown dry with nitrogen.

[0058] Immediately drop the emulsion mixed evenly by ultrasonic waves onto the glass drainage sheet, then drain it to the surface of deionized water, slowly and evenly drop 50 μL of the mixed emulsion within 30 minutes, and the emulsion quickly self-assembles into a binary system at the interface between deionized water and air. Colloid...

Embodiment 2

[0061] Mix 110 μL of polystyrene nanosphere emulsion with a particle size of 1100 nm and 10 μL of polystyrene nanosphere emulsion with a particle size of 120 nm (5% mass fraction) to form a mixed emulsion, and add the same volume as the mixed emulsion Anhydrous ethanol (120 μL) was heated and ultrasonically mixed, the ultrasonic time was 20 min, the heating temperature was 40°C, and the power was 100W.

[0062] The silicon wafer substrate was soaked in acetone and absolute ethanol successively, ultrasonicated for 10 min, soaked in SDS for 24 h, and then the substrate was taken out, rinsed with deionized water, and blown dry with nitrogen.

[0063] Immediately drop the solution evenly mixed by ultrasound onto the glass drainage sheet, and drain it to the surface of deionized water. The mixed solution quickly self-assembles into a binary colloidal crystal film at the interface between deionized water and air, and slowly and evenly drop it within 30 minutes. 50 μL mixed solution,...

Embodiment 3

[0066] Mix 60 μL emulsion of polystyrene nanospheres with a particle size of 800 nm (mass fraction 5%) and 10 μL emulsion of polystyrene nanospheres with a particle size of 260 nm (mass fraction 5%), and add to the emulsion The same volume of absolute ethanol (70 μL) was heated and ultrasonically mixed, the heating ultrasonic time was 20 min, the heating temperature was 40 °C, and the power was 100 W.

[0067] The silicon wafer substrate was soaked in acetone and absolute ethanol successively, ultrasonicated for 10 min, soaked in SDS for 24 h, and then the substrate was taken out, rinsed with deionized water, and blown dry with nitrogen.

[0068] Immediately drop the solution evenly mixed by ultrasound onto the glass drainage sheet, and drain it to the surface of deionized water. The mixed solution quickly self-assembles into a binary colloidal crystal film at the interface between deionized water and air, and slowly and evenly drop it within 30 minutes. 50 μL of mixed solutio...

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Abstract

The invention discloses a binary ordered colloidal crystal, a metal nano array and a preparation method thereof, belonging to the field of nano materials. The preparation method of the binary ordered colloidal crystal comprises the steps of evenly mixing emulsions of polystyrene nanoparticles with different particle sizes to form mixed emulsion; adding absolute ethyl alcohol, mixing to be uniform to form a mixed solution; draining the mixed solution onto the surface of deionized water, adding SDS (Sodium Dodecyl Sulfonate) to form a close-packed colloidal crystal film, and transferring the film to a hydrophilic substrate to obtain the binary ordered colloidal crystal. The method is simple and easy to operate, and the prepared binary ordered colloidal crystal has high order degree. The prepared binary ordered colloidal crystal is subjected to plasma etching and vacuum coating to obtain the metal nano array. The method has the advantages of simple process, convenience in operation and low cost.

Description

technical field [0001] The invention belongs to the field of nanomaterials, and in particular relates to a binary ordered colloidal crystal, a metal nanoarray and a preparation method thereof. Background technique [0002] While the preparation and application of unary colloidal crystals are becoming more and more mature, binary colloidal crystals are gradually coming into people's field of vision, which is a hot spot in the research of colloidal crystals. Due to the diversity of its patterns, many metal nanoarrays different from the traditional morphology can be prepared through traditional coating techniques (such as vacuum coating), thus endowing the binary colloidal crystal template with a wide range of applications in photonic crystals, micro-nano processing, and solar energy. The wider application possibilities in the fields of batteries, chemical catalysis, photoelectric devices, biosensing and detection make it have very excellent application prospects. [0003] Sin...

Claims

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Application Information

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IPC IPC(8): B01J13/00B82Y30/00B82Y40/00
Inventor 肖湘衡郑俊丰戴志高梅菲吴伟赵新月任峰蒋昌忠
Owner WUHAN UNIV
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