Preparation method for multielement dissymmetrical microsphere and heterogeneous microsphere shell

An asymmetric and microsphere technology, applied in the field of material science, can solve the problems of simple structure of asymmetric particles, single functional components, difficult to meet needs, etc., and achieve flexible control of modified materials and shapes, simple and controllable operation. high sex effect

Inactive Publication Date: 2012-07-18
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the asymmetric particles prepared by traditional methods have simple structures, limited characteristic areas, and single functional components, which are difficult to meet the needs; preparation of novel, stable structures, and flexible integration of various optical, electrical, magnetic performance of asymmetric particles is very meaningful

Method used

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  • Preparation method for multielement dissymmetrical microsphere and heterogeneous microsphere shell
  • Preparation method for multielement dissymmetrical microsphere and heterogeneous microsphere shell
  • Preparation method for multielement dissymmetrical microsphere and heterogeneous microsphere shell

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1: the preparation of hydrophilic silicon chip

[0026] The silicon chip used is a single crystal silicon chip (100), and the silicon chip is cut to 2 cm long and 2 cm wide with a glass knife, and put into a mixed solution of concentrated sulfuric acid and hydrogen peroxide (volume ratio is 7: 3) and heated in a water bath to Keep at 80°C for 5 hours to obtain hydrophilic silicon wafers; then pour the mixed solution into a waste liquid bottle, wash the obtained silicon wafers with deionized water for 3 to 5 times, and store them in deionized water for later use.

Embodiment 2

[0027] Embodiment 2: the preparation of hydrophobic glass sheet

[0028] The glass sheet used was cut to 2.5cm long and 3.5cm wide with a glass knife, put into a mixed solution of concentrated sulfuric acid and hydrogen peroxide (volume ratio 7:3) and heated to 80°C in a water bath, and kept for 5 hours to obtain the water glass flakes; pour the mixed solution into a waste liquid bottle, wash the obtained glass flakes with deionized water for 3 to 5 times, and dry them with nitrogen; put the prepared hydrophilic glass flakes into a small weighing bottle In a desiccator, drop two drops of fluorinated reagent into the weighing bottle, put the desiccator in a 60°C oven and heat for 3 hours to obtain hydrophobic glass flakes, take out the glass flakes and set aside. The fluorinating reagent is (Trichloro(1H,1H,2H,2H-perfluoroocty)silane, 1H,1H,2H,2H-perfluorooctyltrichlorosilane).

Embodiment 3

[0029] Embodiment 3: Preparation of hydrophobic silica microspheres

[0030] At normal temperature, get 10mL, 5wt%, the silica colloidal microsphere that diameter is 1 μ m (using Method prepared) ethanol dispersion liquid, at the same time, 10μL octadecyltrichlorosilane was dissolved in 0.5mL toluene, and then the two were mixed, after magnetic stirring for 8h, washed with ethanol centrifuge for 3 times, and the hydrophobic silica gel obtained at last The colloidal microspheres were dispersed in 10 mL of absolute ethanol to obtain an ethanol dispersion of 5 wt % hydrophobic silica colloidal microspheres, and the diameter of the microspheres was 1 μm.

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Abstract

The invention belongs to the scientific field of materials, particularly relates to a preparation method for a multielement dissymmetrical microsphere and a heterogeneous microsphere shell. The method comprises the following steps: a single-layered non-close-packed silicon dioxide colloidal crystal is prepared through an improved micro-contact printing technology, and the dissymmetrical microsphere and the heterogeneous microsphere shell are prepared through the combination with an angle-controllable non-close-packed silicon dioxide colloidal crystal deposition and etching technology. During the whole process, the operation is simple and convenient, the consumption is low, the process is clean, the controllability is high, and high stability of the dissymmetrical microsphere and the microsphere shell are achieved. Various dissymmetrical microspheres compounded by various kinds of materials are simply prepared through controlling the period, the deposition angle and the deposition frequency of the non-close-packed colloidal crystal and the kind of the deposition materials, and the corresponding heterogeneous microsphere shell can be obtained through chemically etching the silicon dioxide microsphere. The dissymmetrical microsphere and the heterogeneous microsphere shell, which are prepared through the invention, have important significance in scientific researches or practical applications.

Description

technical field [0001] The invention belongs to the field of material science, and in particular relates to a preparation method of multi-element metal asymmetric microspheres and heterogeneous metal microsphere shells. Background technique [0002] The preparation and application research of asymmetric microspheres has become an independent and important branch in the field of material science. Due to the synergistic effect of multiple components of asymmetric microspheres, which often exhibit particularly excellent properties, they have a wide range of applications in many fields, such as self-assembly of advanced structures (Chen, Q.; Bae, S.C.; Granick, S. . Nature 2011, 469, 381), surface plasmon resonance devices (Lassiter, J.B.; Knight, M.W.; Mirin, N.A.; Halas, N.J. Nano Lett. 2009, 9, 4326). In the past few years, in addition to the development of existing technologies, people have created many novel technologies to prepare asymmetric microspheres. [0003] With t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B81C1/00
Inventor 张刚于也
Owner JILIN UNIV
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