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Ordered 2D and 3D nano structure metal material comprising hollow metal spheres and its prepn process

A nanostructure and metal material technology, applied in the field of ordered nanostructure metal materials, can solve problems such as difficulty in growing metals

Inactive Publication Date: 2004-04-07
NANJING UNIV
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  • Description
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Problems solved by technology

[0005] Since the void of the template is a nanoscale, curved three-dimensional space, it is extremely difficult to grow metal in such a nano-void, which is different from the growth of a metal film on a flat substrate due to many constraints.

Method used

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  • Ordered 2D and 3D nano structure metal material comprising hollow metal spheres and its prepn process
  • Ordered 2D and 3D nano structure metal material comprising hollow metal spheres and its prepn process
  • Ordered 2D and 3D nano structure metal material comprising hollow metal spheres and its prepn process

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Embodiment Construction

[0040] The schematic diagram of technological process of the present invention sees figure 2 .

[0041] 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.

[0042] The separator in the present invention can be cylindrical or a dielectric rod with a rectangular cross section. The material of the spacer is selected from a dielectric material that can withstand a certain amount of extrusion without deformation.

[0043] The present invention can also use monodisperse silica spheres as spacers. The distance between two flat substrates is equal to the diameter of the silica sphere.

[0044] In the present invention, one end of the prepared microchannel is immersed in the configured colloidal microemulsion liquid. After the...

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Abstract

During the preparation of ordered nano structure metal material, correponding colloid crystal template is first prepared via capillary abstraction self-assembling method. Spacer is set between two parallel plates to form micro passage in the same thickness as the spacer, one end of the micro passage is soaked into microsphere emulsion so that the emulsion is driven by capillary effect to the micro passage to form ordered arrangement. The bottom of the micro passage is then soaked into sensitizing stannous ion solution, so that the surface of the microsphere has one layer of sensitizing stannous ion adsorbed and is sensitized. The present invention features the surface seed growing method and colloidal crystal of polystyrene microsphere as template. When the template is set inside chemical plating solution, some interval is formed between microspheres owing to electrostatic repulsion, and the interval permits forming metal shell in the outer surface of the medium microsphere.

Description

1. Technical field [0001] The invention relates to an ordered nanostructure metal material, especially a two-dimensional and three-dimensional ordered nanostructure metal material formed by densely packing hollow metal spheres and related preparation techniques. 2. Background of the invention [0002] Nanoporous metal materials have many important applications in porous electrodes, fuel cells, sensors, catalysis, and electrochemical capacitors. [0003] In recent years, scientific researchers have begun to pay special attention to the preparation of ordered nanoporous metal materials. It has been found that this kind of material has special optical properties in addition to the general characteristics of porous metal materials. For example, Tessire et al. found that the gold film with ordered nanoporous structure as the substrate has a significant surface enhancement effect on Raman scattering. They found that this enhancement effect is entirely due to the nano-ordered cha...

Claims

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Application Information

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IPC IPC(8): C22C1/08
Inventor 王振林陈卓詹鹏章维益闵乃本
Owner NANJING UNIV
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