Preparation method of zinc oxide nanorods with parallelogram cross section

A zinc oxide nano, parallelogram technology, applied in zinc oxide/zinc hydroxide, technology for producing decorative surface effects, microstructure technology, etc. Size controllable, repeatable, size controllable effect

Active Publication Date: 2014-10-01
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the hexagonal crystal structure of ZnO, there are three faster growth directions [0001], and Therefore, the cross-section of almost all ZnO nano / micro one-dimensional structures is hexagonal, and its microcavity form is limited to nanoribbon Fabry-Parot (FP) microcavity and hexagonal cross-section microrod whispering gallery microcavity (WGM)
However, ZnO one-dimensional nano / microstructures with other cross-sections such as squares, rhombuses, and parallelograms have not been prepared, and there is no breakthrough in the form of microcavities that are closely related to the structure.

Method used

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  • Preparation method of zinc oxide nanorods with parallelogram cross section
  • Preparation method of zinc oxide nanorods with parallelogram cross section
  • Preparation method of zinc oxide nanorods with parallelogram cross section

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) A single crystal silicon wafer (20 mm × 15 mm) was ultrasonically cleaned with deionized water and absolute ethanol for 5 min, and then an Au layer with a thickness of about 10 nm was deposited on the surface of the substrate as a catalyst by thermal evaporation deposition technology. Take a quartz boat with a size of 20mm×15mm×10mm in the boat and ultrasonicate it with deionized water for 5 minutes, and dry it for later use.

[0025] (2) Zn powder Sb 2 o 3 Powder and carbon powder (purity requirements >99.9%) were prepared according to the molar ratio of 160:30:2, placed in an agate mortar and mixed evenly, as the reaction raw materials. The total weight of the ingredients is about 0.8 g.

[0026] (3) Put the reaction raw materials into the quartz boat, and tilt the raw materials to one corner, then put the Au side of the silicon wafer downward, and tilt it on the top of the raw materials, the upper surface of the raw materials is 3~8mm away from the surface of t...

Embodiment 2

[0030] This embodiment mainly investigates the effects of Zn source, raw material ratio, deposition substrate material, reaction temperature, reaction time and gas ratio on the morphology and size of the obtained oxidized nano / micro rods during the preparation of parallelogram zinc oxide nano / micro rods . The specific experimental process is the same as in Example 1, the difference is that the Zn source is changed to ZnO, the raw material ratio, the deposition substrate material, the reaction temperature, the reaction time and the gas ratio. The specific experimental parameters are shown in Table 1. It can be seen from the experimental results that changing the zinc source to ZnO has no effect on the morphology of the samples. Change the raw material ratio in Zn:C:Sb 2 o 3 When the molar ratio is 160:30:2~4, the yield is high and the quality is good. The samples outside this ratio will have other shapes, but there are still a large number of diamond-shaped ZnO nano / microrod...

Embodiment 3

[0032] This example mainly examines whether the parallelogram zinc oxide nano / microrods of Example 1 can be used in optical microcavities

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Abstract

The invention provides a preparation method of ZnO (zinc oxide) nanometer-micrometer rod with a parallelogram cross section. The method comprises the following steps of: using a monocrystalline silicon piece with the surface covered by a Au film with the thickness of 10nm as a deposition substrate; uniformly mixing a certain amount of Zn power or ZnO powder, Sb2O3 powder and carbon powder at a certain mole ratio, putting the mixture used as a reaction source into a quartz boat, and reversely buckling the substrate deposited with the Au film on the raw materials; then putting the quartz boat at a position, close to a thermoelectric couple, on the center of the quartz tube of a tube furnace; before the reaction, removing air in the quartz tube by high-purity nitrogen, rising the furnace temperature to 950-1100 DEG C in the presence of nitrogen, and reacting for 20-60 minutes, wherein when the reaction is performed, the nitrogen gas flow is 3-5L / h and the oxygen gas flow is 0.1-0.5L / h; when the reaction is finished, and naturally cooling the furnace temperature to the room temperature to obtain the ZnO nanometer-micrometer rod with the parallelogram cross section. The preparation method has the characteristics that the process is simple, the product repeatability is good, the crystal quality is high, and the feature size is controllable. The ZnO nanometer / micrometer rod has the function of excellent regulation on optical field and can be used for a similar waveguide Fabry-Perot optical microcavity.

Description

technical field [0001] The invention relates to the preparation of nano / micro materials, especially a method for preparing zinc oxide nano-microrods with a parallelogram cross-section. The synthesis process is simple, with high yield, good repeatability, controllable size, regular cross-section, smooth surface and good crystal quality. . After the optical test, the product shows excellent control ability to the light field, which can be applied to a brand-new waveguide-like FP microcavity, and has made an original breakthrough in the form of the microcavity. Background technique [0002] Due to their small size and large specific surface area, nano / micro materials have unique physical and chemical properties different from bulk materials, and exhibit excellent electrical, optical, mechanical, catalytic, and sensing properties. With the rapid development of modern technology, miniaturization, integration and high efficiency are the inevitable trend of the development of mode...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B81C1/00C01G9/03
Inventor 董红星柳洋张龙詹劲馨
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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