Preparation method of biomimetic gecko composite microarray

A technology of microarray and gecko, which is applied in the field of bionic gecko composite microarray preparation, can solve the problems of high cost, complicated operation, and difficult demoulding, and achieve the effect of low cost, simple operation, and controllable experimental parameters

Active Publication Date: 2016-02-24
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of microarrays by anodic oxidation is a simple, convenient, low-cost, and parameter-controllable method. This method directly in-situ oxidizes the imitation gecko foot microarray on the metal Ti sheet without removing the template, which solves the high cost of existing methods. , complex operation, and difficult demoulding, it is expected to realize industrial production

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  • Preparation method of biomimetic gecko composite microarray
  • Preparation method of biomimetic gecko composite microarray
  • Preparation method of biomimetic gecko composite microarray

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specific Embodiment approach 1

[0020] Specific implementation mode one: as figure 1 As shown, this embodiment prepares TiO according to the following steps 2 Nanotube / PDMS composite microarray:

[0021] Step 1: Preparation of TiO by anodic oxidation 2 nanotube microarray;

[0022] Ti sheet (1-8cm 2 ) for physical polishing, chemical polishing (30%HF and 25%HNO 3 aqueous solution), absolute ethanol and distilled water for repeated ultrasonic cleaning, and dry at room temperature for later use. Prepare a 0.1-5wt% HF aqueous solution, use the dried metal sheet as the anode, and the platinum sheet as the cathode. The distance between the two electrodes is 2-5cm. Perform anodic oxidation in a plexiglass electrolytic cell. The test is at room temperature (20°C). conduct. The voltage range is 10-60V, and the oxidation time is 2min-25h. Take out the oxidized Ti, wash it repeatedly with water, and dry it to get one-dimensional TiO 2 array of nanotubes.

[0023] The second step, preparation of TiO by impregn...

specific Embodiment approach 2

[0025] Specific embodiment two: this embodiment prepares imitation gecko foot microarray according to the following steps:

[0026] Step 1: Preparation of TiO by anodic oxidation 2 nanotube microarray;

[0027] Ti sheet (4cm 2 ) for physical polishing, chemical polishing (30%HF and 25%HNO 3 aqueous solution), anhydrous ethanol and distilled water for repeated ultrasonic cleaning, and dried at room temperature for use, prepared with 0.5wt% HF aqueous solution. The dried metal sheet was used as the anode, the platinum sheet was used as the cathode, and the distance between the two electrodes was 2 cm. Anodic oxidation was carried out in a plexiglass electrolytic cell, and the test was carried out at room temperature (20°C). The voltage is 18V, and the oxidation time is 5min. Take out the oxidized Ti, wash it repeatedly with water, and dry it to get one-dimensional TiO 2 array of nanotubes.

[0028] The second step, preparation of TiO by impregnation method 2 Nanotube / PDMS...

specific Embodiment approach 3

[0031] Specific embodiment three: this embodiment prepares imitation gecko foot microarray according to the following steps:

[0032] Step 1: Preparation of TiO by anodic oxidation 2 nanotube microarray;

[0033] Ti sheet (4cm 2 ) for physical polishing, chemical polishing (30%HF and 25%HNO 3 aqueous solution), anhydrous ethanol and distilled water for repeated ultrasonic cleaning, and dried at room temperature for later use, prepared with 0.5wt% NH 4Glycerol solution of F. The dried metal sheet was used as the anode, the platinum sheet was used as the cathode, and the distance between the two electrodes was 4cm. The anodic oxidation was carried out in a plexiglass electrolytic cell, and the test was carried out at room temperature (20°C). The voltage is 60V, and the oxidation time is 20h. Take out the oxidized Ti, wash it repeatedly with water, and dry it to get one-dimensional TiO 2 array of nanotubes.

[0034] The second step, preparation of TiO by impregnation metho...

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Abstract

The invention provides a preparation method of a bionic gecko composite microarray, relating to a preparation method of setae on bionic gecko feet. The preparation method of the bionic gecko structured composite microarray comprises the following steps: (1) preparing a TiO2 nanotube microarray by adopting an anodic oxidation method; (2) impregnating the prepared TiO2 nanotube microarray in a trichloromethane solution of polydimethylsiloxane (PDMS) and taking out and curing the TiO2 nanotube microarray, thus obtaining a TiO2 / PDMS composite microarray. The preparation method of the setae on bionic gecko feet is simple to operate, is controllable in experiment parameters and low in cost and can be used for preparing the elastic silicone rubber coated TiO2 nanotube bionic gecko feet microarray. The area, setae diameters and height of the bionic gecko feet nano array are respectively 1-8cm<2>, 20nm-4mu m and 0.5-5mu m.

Description

technical field [0001] The invention relates to a preparation method of a bionic gecko composite microarray. Background technique [0002] The excellent physiological functions of many animals have attracted the attention of scientists from all walks of life for centuries. For example, mosquitoes can easily adhere to human skin to bite; dung beetles living in a sticky and moist soil environment have excellent anti-adhesion functions; The smooth glass comes and goes freely. The common feature of the above-mentioned animals is that they all have a seta structure, and the difference in the architecture of the seta groups leads to the diversification of their functions. Among them, the kung fu on the gecko's feet is particularly amazing. Whether it is in the air environment, in the water or in a vacuum environment, the adhesion on its feet will not fail. Wall-climbing robot has a wide range of applications in civil, military and aerospace, so it has been paid more and more at...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B81C1/00C25D11/26
Inventor 刘宇艳张恩爽谢志民吕通谭惠丰
Owner HARBIN INST OF TECH
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