Surface wettability controllable device and control method

A control device and wettability technology, which is applied in the field of hydrophobic surface preparation, can solve the problems of not being suitable for microfluidic systems, difficulty in ultraviolet irradiation, and complicated repeated control, and achieves obvious control effect, good repeatability, and easy realization. Effect

Inactive Publication Date: 2017-06-16
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of the prior art is that it is complicated to realize repeated regulation, and it is not suitable for microfluidic systems.
Because the surface with adjustable wettability is the wall of the microchannel of the microfluidic system, after the assembly of the microfluidic system, the overall shape of the adjustable surface with wettability is difficult to change, and it is also difficult to irradiate the surface with ultraviolet light.

Method used

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  • Surface wettability controllable device and control method
  • Surface wettability controllable device and control method
  • Surface wettability controllable device and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Both the sheet combination A21 and the sheet combination B22 are sheet combinations prepared from 20 sheets of 20mm (length)×10mm (width)×0.18mm (thickness), wherein the long side of the sheet combination A rectangular sheet 23 is placed horizontally, and the The short side of the rectangular sheet 24 of combination B is placed horizontally, the rectangular sheet 23 of sheet combination A and the rectangular sheet 24 of sheet combination B are in a perpendicular state to each other, after the arrangement of the sheets is completed, the left side plate 16 and the right The side plate 17 fixes the relative positions of the 20 sheet combination A rectangular sheets 23, and bonds the lower side plate 18 at the lower side of the sheet combination B22 to fix the relative positions of the 20 sheet combination B rectangular sheets 24. After the two groups of sheets are fixed, adjust the relative position of the upper surface 14 of the sheet combination A and the upper surface 15...

Embodiment 2

[0044] Both the sheet combination A21 and the sheet combination B22 are sheet combinations prepared from 20 sheets of 20mm (length)×10mm (width). The preparation process is the same as in Example 1, except that the thickness of the sheets is different. Among them, the sheet combination A is a rectangular sheet The thickness of 23 is 0.18mm, and the thickness of sheet combination B rectangular sheet 24 is 0.42mm.

[0045] The control surface 19 of the adjustable wetting mechanism is controlled and tested, and the upper surface 15 of the sheet combination B coincides with the upper surface 14 of the sheet combination A, that is, the height difference 20 between the upper surface 15 of the sheet combination B and the upper surface 14 of the sheet combination A is zero. , the measured surface contact angle is 116°; when the upper surface 15 of the sheet combination B is at different positions 0-1mm lower than the upper surface 14 of the sheet combination A, it is measured that the ...

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Abstract

The invention relates to a surface wettability adjustment and control device. The surface wettability adjustment and control device includes a computer, a movement controller, a connecting line, a motor, a screw rod, cylindrical guide rails, a slider, a fixing seat, connecting rods I, connecting rods II, a thin sheet assembly A, a thin sheet assembly B, an adjustment and control surface, a left side plate, a right side plate and a lower side plate; and the upper surfaces of the thin sheet assembly A and the thin sheet assembly B are combined jointly so as to form the adjustment and control surface. Different surface microstructures at opposite positions of the upper surfaces of the thin sheet assembly A and the thin sheet assembly B are realized in the adjustment and control surface, so that surface wettability is different, and the surface can have required contact angles. The wettability adjustment and control device and method provided by the technical schemes of the invention have the advantages of simplicity, obvious effects, excellent repeatability and suitability for microfluidic systems.

Description

technical field [0001] The invention belongs to the technical field of surface wetting, and in particular relates to a hydrophobic surface preparation technology, which can accurately control the hydrophobic characteristics of the surface. Background technique [0002] Wetting properties are one of the important properties of solid surfaces, which are mainly related to two factors: solid surface free energy and surface microscopic geometric structure, which have an important impact on materials in the fields of liquid transmission, friction, and corrosion resistance. The regulation of wettability refers to the reversible change of wetting properties under the stimulation of external conditions. The external conditions for the reversible change of the wetting characteristics in the prior art mainly include mechanical methods, illumination methods, electric field methods, thermal and chemical methods, and the like. [0003] In the prior art, Zhang Jilin and others published a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B15/02
Inventor 张会臣李小磊
Owner DALIAN MARITIME UNIVERSITY
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