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Contact angle is an extremely versatile technique used for characterization of both liquids and solids. The Contact Angle Meter (optical tensiometer) is an ideal industrial or academic tool for product development engineers, R & D engineers who need precision and repeatability.
Contact angle measurement combines high technology test instrumentation and a non-destructive testing method to allow an accurate, objective and repeatable analysis to be made. Using the contact angle meter one can compare the effects of a range of surface treatments and gather data that correlates to various surface conditions.
The apparatus automatically assesses the drop shape as a function of time after capturing photographs of drops. The surface tension of the liquid, gravity, and the disparity in densities between the sample liquid and the surrounding medium all affect how a drop will appear.
The liquid produces a drop on a solid with a contact angle that is also influenced by the surface free energy of the solid. A drop profile fitting method is used to examine the collected image and compute the contact angle and surface tension.The liquid will assume a droplet shape when it is deposited onto a solid substrate.
The three-face point, which determines the contact angle, is the location where a solid, liquid, and vapor come together. The wettability, which depends on the mixture of a solid substrate and a liquid as well as the surroundings, is also indicated by the contact angle.
The Young equation describes the link between the contact angle, the free energy of the solid surface, the surface tension of the liquid, and the interfacial tension between solid and liquid.
Calculating the distinctive surface free energy (SFE) of a solid surface is a crucial application of contact angle measurement. A solid’s surface free energy has the same units as a liquid’s surface tension, either mN/m or dynes/cm, making them comparable parameters.
The Global Contact Angle Meter Market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
For the first time ever, KINO created a brand-new instrument for measuring contact angles called a 3D contact angle meter, and it has filed a patent application in China.
In the course of selling contact angle meters and assisting customers in taking contact angles, they discover that taking 2D contact angles alone are insufficient to characterize the surface chemistry of solid samples, particularly those with hydrophobic surfaces.
A drop’s shape rarely resembles a circle or an ellipse because of its chemical heterogeneity, physical structure at the nanoscale, and the cleanliness of the sample surface.
In 2D, the contact angles at the left and right sides are never equal. Therefore, characterizing the appropriate surface chemical property requires 3D contact angle.
