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Capillary attration colloidal microball self-organization and two-dimensional, three-dimensional colloidal crystal preparing method

A technology of three-dimensional colloids and colloidal microspheres, which is applied in colloid chemistry, colloid chemistry, chemical instruments and methods, etc., can solve the problem of particularly high atmosphere requirements, and achieve the effects of short preparation cycle, high efficiency and simple technical process

Inactive Publication Date: 2004-01-28
NANJING UNIV
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Problems solved by technology

However, this technology has particularly high requirements on the surrounding atmosphere and is also very sensitive to external disturbances.

Method used

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  • Capillary attration colloidal microball self-organization and two-dimensional, three-dimensional colloidal crystal preparing method
  • Capillary attration colloidal microball self-organization and two-dimensional, three-dimensional colloidal crystal preparing method
  • Capillary attration colloidal microball self-organization and two-dimensional, three-dimensional colloidal crystal preparing method

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Embodiment Construction

[0025] The invention prepares high-quality two-dimensional and three-dimensional colloidal crystals through the self-organization process of colloidal microspheres in microchannels under capillary attraction. See the implementation method figure 2 . Photos are marked with size. It can grow polystyrene colloidal microspheres, silica colloidal microspheres and various composite dielectric colloidal microspheres.

[0026] The present invention first selects a wave plate as a substrate and lays it flat. Then two identical separators with a certain thickness are placed in parallel on the wave plate. Cover it with a wave plate of the same size. Finally, while maintaining the relative position of the two wave plates, fix them.

[0027] The separator in the present invention can be a cylindrical or rectangular dielectric rod in cross section, such as figure 2 shown. The material of the spacer is selected from a dielectric material that can withstand a certain amount of extrus...

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Abstract

The invention is a kind of capillary colloid self-organization and the manufacturing method for planar and three-dimensional colloid crystal. It has a tiny bypass and uses the capillary in the bypassto absorb, thus the colloid self-organization forms planar and three-dimensional colloid crystal structure. The tiny bypass is a thin one. It uses columniform or the rectangle section media bar and puts them between the two bottoms, forms the capillary bypass. The invention has no special request to the environment and has a strong resistance to the disturbance.

Description

1. Technical field [0001] The present invention relates to the self-organization of colloidal microspheres and the preparation of colloidal crystal materials, that is, the suspension of monodisperse polystyrene colloidal microspheres is sucked into the microchannel spontaneously through capillary attraction, and the self-assembly process in the microchannel A method for preparing two-dimensional and three-dimensional colloidal crystals. 2. Background technology [0002] The study of two-dimensional and three-dimensional colloidal crystals composed of monodisperse submicron colloidal microspheres not only has important scientific research value, but also has important practical value. For example, it can be used as a template to prepare highly ordered porous ceramics, porous metals, and porous magnetic materials with specific functions. Using colloidal crystals as templates, introducing porous structures into bulk ceramics can greatly improve the strength of ceramics. In ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/00
Inventor 王振林陈卓詹鹏章建辉章维益王慧田闵乃本
Owner NANJING UNIV
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