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A structural color film capable of visual measurement and its preparation method and application

A structural color and color technology, which is applied in the field of preparation of structural color films on polydimethylsiloxane substrates, can solve problems such as complex processes, and achieve the effects of simple process, reduced measurement difficulty, and easy control of process parameters.

Active Publication Date: 2021-08-06
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a structural color film capable of visual measurement and its preparation method and application, so as to solve the complex technical problems in the prior art

Method used

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  • A structural color film capable of visual measurement and its preparation method and application
  • A structural color film capable of visual measurement and its preparation method and application
  • A structural color film capable of visual measurement and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A method for preparing a structural color film of focused laser interference lithography in this example comprises the following specific steps:

[0052] Step 1, according to the mass ratio of 10:1, weigh the liquid PDMS and PDMS curing agent with an electronic scale, mix the weighed liquid PDMS and PDMS curing agent in the same beaker, stir in the same direction with a glass rod for 10 minutes, and stir After uniformity, use a disposable plastic straw to absorb the evenly stirred PDMS from the beaker, drop it on a clean glass slide placed horizontally, and let it stand at room temperature 20°C for 5 minutes. PDMS will spread on the glass slide and form when stirring. The bubbles will also be discharged when standing still. After standing still, place the slide with PDMS on the glue spreader, first keep it at 500r / min for 10 seconds, then keep it at 1500r / min for 60 seconds, spin coat Then put it on the heating plate to heat and cure. The heating temperature is 80°C-100...

Embodiment 2

[0061] A method for preparing a structural color film of focused laser interference lithography in this example comprises the following specific steps:

[0062] Step 1, according to the mass ratio of 10:1, weigh the liquid PDMS and PDMS curing agent with an electronic scale, mix the weighed liquid PDMS and PDMS curing agent in the same beaker, stir in the same direction with a glass rod for 10 minutes, and stir After uniformity, use a disposable plastic straw to absorb the evenly stirred PDMS from the beaker, drop it on a clean glass slide placed horizontally, and let it stand at room temperature for 5 minutes at 20°C. PDMS will naturally spread out on the surface of the glass slide. At the same time, the air bubbles formed during stirring will also be discharged when standing still. Put the slides with PDMS on the homogenizer after standing still, first keep it at a speed of 500r / min for 10 seconds, and then keep it at a speed of 1500r / min for 60 seconds. Seconds, after spin ...

Embodiment 3

[0070] In this example, a method for preparing a structural color film of focused laser interference lithography is combined with a flexible actuator to realize non-contact visual measurement of the curvature of the flexible actuator, including the following specific steps:

[0071] Step 1: Apply a layer of black ink on the position where the surface of the PDMS layer of the flexible actuator needs to be processed, using black water-based pen ink, and place the ink-coated flexible actuator sample at room temperature to dry the ink on the surface , to obtain a flexible actuator sample with a layer of ink layer on the surface;

[0072] Step 2: Use a nanosecond laser with a center wavelength of 355nm, a pulse width of 10ns, and a repetition rate of 10Hz to perform focused laser interference lithography scanning on the part of the flexible actuator described in step 1 that needs to be processed. The laser interference lithography scanning processing system, as shown in Fig. 2 A s...

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Abstract

The invention discloses a structural color film capable of visual measurement and its preparation method and application, and relates to the field of laser surface micro-nano processing. In the method, a layer of ink is first coated on a formed transparent PDMS film. After the ink is dried, it will A layer of ink is prepared on the surface of the PDMS film, and then the sample is processed by using focused laser interference lithography technology and the relevant parameters are adjusted with an ultrafast laser, and a periodic array of micro-nano grooves is processed on the surface of the sample to obtain the described Structural color finish. The invention discloses a method for preparing a structural color film by using the structural color film to prepare a structural color surface on a flexible actuator. During the deformation process of the flexible actuator, the color of the corresponding structural color surface will also change. The corresponding relationship between the color change of the color and the deformation realizes the non-contact visual measurement of the bending angle of the flexible actuator.

Description

technical field [0001] The invention relates to the field of laser surface micro-nano processing, in particular to a preparation method and application of a structural color film on a polydimethylsiloxane (PDMS) substrate. Background technique [0002] The surface microstructures under biological inspiration have unique functions, such as superhydrophobic lotus leaf surface, anisotropic rice leaf surface, desert beetle surface that can collect water mist, and colorful butterfly wings and other structured color surfaces. It is a variety of colors produced by refraction, diffuse reflection, diffraction or interference of light waves due to the fine structures such as extremely thin wax layer, engraved points, grooves or scales on the surface. For example, butterfly wings show brilliant and colorful colors due to the ridge-like microstructure on the surface; the feathers of many birds can see extraordinarily dazzling bright colors when viewed from a specific angle due to the mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/255
CPCG01B11/255
Inventor 张晨初陈任飞张健明
Owner HEFEI UNIV OF TECH
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