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Method for measuring droplet marginal dynamic contact angle

A technology of dynamic contact angle and measurement method, applied in measurement devices, surface/boundary effects, instruments, etc., can solve the problems of single real contact angle value is not high, and nanostructure cannot obtain real and accurate representation of real angle value, etc. , to achieve the effect of high promotion value

Active Publication Date: 2021-01-29
上海梭伦信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the evaluation criteria for the rationality of structural design are usually limited to a simple static contact angle value so far.
The singleness of such an evaluation tool is easily misled by the fact that the real contact angle value caused by the surface structure is not high, and most of the false super-hydrophobic angles are affected by the surface structure.
Similarly, in the semiconductor manufacturing process, there is also the situation that the angle change caused by the nanostructure cannot be truly and accurately represented by the static contact angle value characterization tool.

Method used

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  • Method for measuring droplet marginal dynamic contact angle
  • Method for measuring droplet marginal dynamic contact angle
  • Method for measuring droplet marginal dynamic contact angle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Such as Figure 9 As shown, a dynamic contact angle test device by marginal droplet method includes a test device body, and the test device body includes a background light source 1, a liquid inlet system 2, a microscope lens 3 and a camera 4, and the microscope lens 3 and camera 4 pass the C port standard The interface is connected to form an imaging functional assembly, and the assembly and the background light source 1 are respectively located on both sides of the liquid inlet system;

[0077] Such as Figure 10 The right view of the liquid inlet system 2, including the liquid storage sample tube 5, the Luer adapter head 6, the fixed bracket 7, the nozzle 8, the piezoelectric ceramic valve 9, the thimble clamp 10 of the micro-injection device, the motor 11, and the motor fixing seat 12 , motor base 13 and piezoelectric ceramic valve fixed connection block 14, such as Figure 11As shown in the front schematic diagram of the structural relationship of the liquid inle...

Embodiment 2

[0099] This embodiment is the same as S1, S2, S3, and S4 in the marginal droplet method dynamic contact angle testing device and testing method of the first embodiment, only S5 is different, and S5 is as follows:

[0100] S5. Change the marginal droplet volume of the droplet to evaluate the real contact angle and apparent contact angle under different measuring ranges;

[0101] Through the micro-injection system of the micro-injector system, the marginal increment of the micro-droplet micro-promotion is formed, and the resulting change of the contact angle is evaluated, and the maximum contact angle value in (2.4) is used to evaluate the real contact angle. Value, take a small angle value to evaluate the apparent contact angle value.

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Abstract

The invention discloses a method for measuring a droplet marginal dynamic contact angle, and belongs to the technical field of interface chemical testing. According to a micro-liter and nano-upgrade double-liquid-inlet device, a volume marginal increment is formed by increasing a liquid volume, a dynamic change of the contact angle value caused by the volume marginal increment is tested, finally,the maximum value of the contact angle below 60 degrees is adopted as a real contact angle, and the minimum value of the contact angle above 60 degrees is adopted as the real contact angle. The methodcan be widely applied to teaching demonstration of physical chemistry of undergraduate, master and doctor of universities and research institutions, can also be used for testing data in industries such as biomimetic materials, nanometer materials, semiconductors and wafers, can rapidly give values, is convenient to use and has an extremely high popularization value.

Description

technical field [0001] The invention relates to a method for measuring the dynamic contact angle at the edge of a droplet, which belongs to the technical field of interface chemical testing and is used for testing the influence of the real contact angle of solid materials and the surface structure on the apparent contact angle. Background technique [0002] The contact angle value is one of the important indicators to characterize the physical and chemical properties of solid materials, especially the interface adhesion. With the development of nanomaterials, bionic science, semiconductor wafer and other industries, the measurement of contact angle and its accuracy and reliability directly affect the final effect characterization and value evaluation. In particular, the degree to which the real contact angle value and the apparent contact angle are influenced by the surface structure is very important for the success of biomimetic material design and the quality evaluation o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/00
CPCG01N13/00
Inventor 施建辉施语辰
Owner 上海梭伦信息科技有限公司