Method for preparing biomimetic colour super-hydrophobic coating by multi-beam interference photoetching technology

A multi-beam interference, super-hydrophobic coating technology, applied in the field of bionic micro-manufacturing, can solve problems such as restricting applications, and achieve the effect of promoting development, good decorative effect, and promoting simplification

Inactive Publication Date: 2010-06-09
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This limits the application of most of the current

Method used

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  • Method for preparing biomimetic colour super-hydrophobic coating by multi-beam interference photoetching technology
  • Method for preparing biomimetic colour super-hydrophobic coating by multi-beam interference photoetching technology
  • Method for preparing biomimetic colour super-hydrophobic coating by multi-beam interference photoetching technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Build a four-beam laser interference system.

[0052] figure 1 It is a schematic diagram of the optical path of four-beam laser interference. The laser used was a triple frequency, mode-locked, neodymium-doped yttrium aluminum garnet single-mode laser (Lab-Series) provided by American Spectroscopy. The production process of four coherent lasers is as follows:

[0053] After the 355nm laser beam emitted by the laser 1 is enclosed and expanded by the lenses 1 and 2, the light reflected by the beam splitter 3 is the first coherent light. The light transmitted from the beam splitter 4 is the incident light of the beam splitter 5, and the light reflected from the beam splitter 5 is the second beam of coherent light. The first beam of coherent light and the second beam of coherent light are coplanar. The light transmitted from the beam splitter 5 passes through the beam splitter 6, and the reflected light from the beam splitter 6 passes through the two mirrors 11 and 12 to ...

Embodiment 2

[0070] (1) Build an interference lithography system. Same as Example 1.

[0071] (2) Preparation of interference materials with different thicknesses.

[0072] Adjust the speed of the homogenizer to obtain different film thicknesses to control the height of the final structure. When the speed of the homogenizer is 1000 rpm, 3000 rpm, and 6000 rpm, the resulting film thicknesses are 1.5 μm, 1 μm, and 300 nm, respectively.

[0073] (3) Interference lithography and development process.

[0074] When the height of the structure changes, the roughness of the material also changes, and the hydrophobic properties are also different. Such as Figure 4 As shown, (b), (e), (h) are oblique SEM pictures with the same diameter and structure heights of 300 nm, 1 μm, and 1.5 μm, respectively, and the measured contact angles are 132°, 151°, and 156°, respectively. It can be seen that as the height of the micropillars increases, the contact angle gradually increases. In addition, as the exposure t...

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Abstract

The invention belongs to the field of biomimetic micro-manufacturing technology and particularly relates to a method for preparing a biomimetic colour super-hydrophobic coating on a transparent polymer material by multi-beam interference photoetching technology, which comprises the following steps: building a laser multi-beam interference system, spirally coating a solidifiable or degradable material on a substrate, solidifying the solidifiable material or degrading the degradable material through laser interference photoetching and obtaining a microstructural array after developing; and then modifying a low-surface energy material on a microstructure, and obtaining the biomimetic colour super-hydrophobic coating by the multi-beam interference photoetching technology on the substrate. The method of the invention can overcome the shortcomings of the traditional preparation method, allows the surface of the material to display various colours and plays a role of very good decoration effect because the regular structure scatters and diffracts incident light, and promotes the super-hydrophobic surface to develop to a simplified and practical surface.

Description

Technical field [0001] The invention belongs to the technical field of bionic micro-manufacturing, and specifically relates to a method for preparing a bionic color super-hydrophobic coating on a transparent polymer material by using a multi-beam interference photoetching technique. technical background [0002] The special functions of various biological surfaces in nature arouse people's great interest, such as the hydrophobic properties of the surface of the lotus leaf, the rainbow colors of butterfly wings, and the strong adsorption of the creeper's legs. Studies have found that these novel characteristics are caused by some special micro-nano structures on the surface. For example, through high-precision scanning electron microscopy, the surface of the lotus leaf is covered with protruding papillae. Its average diameter is 5μm, and the surface of each papilla is covered with nano-scale waxy fine hairs. It is precisely because of the combination of this microstructure and su...

Claims

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Application Information

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IPC IPC(8): G03F7/16
Inventor 孙洪波吴东陈岐岱
Owner JILIN UNIV
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