Contact angle measurement device and method for superconducting magnet simulated microgravity environment

A technology for simulating microgravity and superconducting magnets, applied to measuring devices, instruments, scientific instruments, etc., can solve the problem of unusable volume and achieve the effect of overcoming the bulkiness

Inactive Publication Date: 2012-07-11
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the prior art that are bulky and cannot be used in superconducting magnets, the present invention provides a solid-liquid dynamic and static contact angle measurement device in the simulated microgravity environment of superconducting magnets, which meets While measuring the solid-liquid dynamic and static contact angles in a gravity environment, it can also meet the measurement of solid-liquid dynamic and static contact angles under constant gravity conditions, and a comparative experiment between the two can be carried out

Method used

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  • Contact angle measurement device and method for superconducting magnet simulated microgravity environment
  • Contact angle measurement device and method for superconducting magnet simulated microgravity environment
  • Contact angle measurement device and method for superconducting magnet simulated microgravity environment

Examples

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Embodiment 1

[0037] (1) Measurement of dynamic and static contact angles of triple-distilled water on silicon wafers under simulated microgravity environment with superconducting magnets.

[0038] Step 1: Inhale triple distilled water into the syringe 6, connect it with the connecting hose 12 after removing air bubbles, and put it into the card slot. Open the sealing cover 8, and rotate the angle adjustment rod knob 2 to move the sample holder 9 to one side. Turn the threaded push rod knob 1 to remove air bubbles. Cover the sealing cover 8. Light source 11 is turned on.

[0039] Step 2: Load the contact angle measurement device into the chamber of the superconducting magnet from the bottom of the magnet. Squeeze out the droplet, determine the suspended position, observe the scale on the shaft part of the contact angle measuring device, and record it. That is, the three-distilled water suspension point is determined.

[0040] Step 3: Take the contact angle measurement device out of the...

Embodiment 2

[0058] (1) Measurement of dynamic and static contact angles of ethylene glycol on silicon silicon wafers under simulated microgravity conditions with superconducting magnets.

[0059] Step 1: Inhale ethylene glycol into the syringe 6, connect with the connecting hose 12 after removing air bubbles, and put it into the card slot. Open the sealing cover 8, and rotate the angle adjustment rod knob 2 to move the sample holder 9 to one side. Turn the threaded push rod knob 1 to remove air bubbles. Cover the sealing cover 8. Light source 11 is turned on.

[0060] Step 2: Connect the CCD17 to the computer and open the software. Load the contact angle measurement device into the superconducting magnet chamber from the bottom of the magnet. Squeeze out the droplet, determine the suspended position, observe the scale on the shaft part of the contact angle measuring device, and record it. That is, the suspension point of ethylene glycol is determined.

[0061] Step 3: Take the conta...

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Abstract

The invention discloses a contact angle measurement device and a contact angle measurement method for a superconducting magnet simulated microgravity environment. A glass window is formed at one end of a closed chamber. A charge coupled device (CCD) observation system is arranged outside the glass window. An injector is fixed in the closed chamber, and a syringe putter of the injector is pushed and drawn by rotating a threaded pushrod. An outlet of the injector is connected with a syringe needle through a connecting hose. An illumination system is arranged at the bottom of the closed chamber. A specimen holder and the syringe needle are sequentially arranged over a light source of the illumination system. A point of the syringe needle is vertical to the specimen holder. Feeding operation for liquid is controlled by the rotation of the threaded pushrod, and appearance grayscale images, which are changed along with time in an advancing, static or receding process, of droplets are captured in real time. The appearance contours of the droplets in each frame of picture are analyzed by using a contact angle analysis method for fitting, a slope is calculated, and an advancing, static or receding contact angle value is calculated. According to the device and the method, solid-liquid dynamic and static contact angles can be accurately measured under a superconducting magnet simulated microgravity condition and a normal gravity condition.

Description

technical field [0001] The invention relates to a device and method for measuring solid-liquid dynamic and static contact angles. Background technique [0002] The contact angle refers to the angle formed by dropping a liquid on a solid horizontal plane, and at the intersection of solid, liquid, and gas, the two tangent lines between the solid-liquid interface and the gas-liquid interface sandwich the drop. The contact angle is an important parameter to characterize the wettability of a liquid on a solid surface. Through the study of contact angle, various interface phenomena can be deeply understood, and a lot of information on solid-gas interface, solid-liquid interface, and gas-liquid interface can be obtained. [0003] The literature "The latest developments in contact angle measurement technology. Physical and chemical experiments - physics volume. 2008, 44: 84-89" reported the latest developments in contact angle measurement technology. At present, the contact angle m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/00
Inventor 尹大川刘永明施建宇鹿芹芹郭云珠陈瑞卿
Owner NORTHWESTERN POLYTECHNICAL UNIV
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