The principle of contact angle measurement: Simply put, it is the principle of optical projection imaging to carry out fidelity acquisition and precise analysis of gas, liquid, solid, and three-phase interface profiles; in the research material surface industry, contact angle measuring instruments are very common. , which is also a good illustration of the importance of the contact angle measuring instrument to study the surface of the material.
1. Introduction to the principle of contact angle measuring instrument
The principle of contact angle measurement: Simply put, it is the principle of optical projection imaging to carry out fidelity acquisition and precise analysis of gas, liquid, solid, and three-phase interface profiles; in the research material surface industry, contact angle measuring instruments are very common. , which is also a good illustration of the importance of the contact angle measuring instrument to study the surface of the material.
2. How to use the contact angle measuring instrument
We have learned that the principle of the contact angle measuring instrument is not complicated, and its use method is simpler.
The steps of using the contact angle measuring instrument: 【Press the space bar】--turn on the camera; 【Press the 1 button】--Precise control of the dripping; 【Press the 2 button】-- Fully automatic measurement with high precision.
Sindin Precision SDC-200S Contact Angle Measuring Instrument
Diversified contact angle analysis methods: automatic fitting method, semi-automatic fitting method, manual horizontal measurement, manual slope measurement, width and height measurement method, manual tangent method, etc., advancing angle / receding angle, rolling angle (tilt angle)
Diversified software calculation method: ring fitting method (below 40 degrees); ellipse fitting method (40-120 degrees); Young-Lapalacer fitting method (above 120 degrees)
Accurate surface free energy calculation: Fowks method, OWRK method, ZismanPlot method, EOS method (some liquid databases are pre-installed in the software, and liquid performance parameters can be established by yourself)
There are many industries that pay attention to the use of the contact angle measuring instrument. This instrument is suitable for use in petroleum, printing and dyeing, medicine, spraying and other fields, and the principle of the contact angle measuring instrument is not complicated. The process of use is mainly to use the attached syringe needle. After placing it on the substrate, you can cast a shadow, and use the device to magnify the shadow for measurement.
In the past, contact angle measuring instruments were widely used in petroleum, chemical, ignition, medicine, spraying and other industries. With the development of semiconductor wafers in China in recent years, contact angle measuring instruments have also been used in the measurement of photoresist and wafers. Surface wetting performance, measurement of surface hydrophilicity and hydrophobicity of wafer gold fingers, etc. At the same time, Sindin Precision will accompany the growth of the motherland, and will develop a higher precision contact angle measuring instrument!