Contact Angle Measurement Instrument

Contact angle measurement has been broadly accepted for material surface analysis related to wetting adhesion and absorption.

Contact angle measurement instrument. There are three different forces acting on this three phase contact point between solid fluid and fluid. The contact angle is the angle conventionally measured through the liquid where a liquid vapor interface meets a solid surface. Yu and ziegler 160 characterized the cls using a ccm. The measurement system is the part that actually measures the contact angle from the image created with the viewing system and is not a physical part of the instrument.

When a droplet wets well to a surface it will spread out very flatly. There are numerous practical applications for contact angle measuring instruments. In the case of the contact angle measurement the number of data points is the number of recorded pixels along the droplet edge. When a droplet of the liquid is deposited on the solid the point where the solid liquid and vapour meet determines the contact angle.

As discussed in the first section this is a product of camera resolution image magnification and image clarity. The contact angle is geometrically defined as the angle formed by a liquid at the three phase boundary where a liquid gas and solid intersect. With its low price compact size and intuitive pc software the barrier to entry is lowered enabling more researchers than before to perform these useful and versatile measurements. Most manufactory s contact angle measurement instrument is fall into this category except contact angle measurement instrument with drop shape analytical system.

A given system of solid liquid and vapor at a given temperature and pressure has a unique equilibrium contact angle. It quantifies the wettability of a solid surface by a liquid via the young equation. Contact angle θ theta is a quantitative measure of wetting of a solid by a liquid. They found that the first attachment of a water droplet at the cl surface showed a relatively high contact angle and then the contact angle decreased with time as shown in figure 3 26.

Usually contact angle meter with camera but without complexity algorithm such as drop shape analysis system is also called as contact angle goniometer. This is usually done using a software program setup to trace the drop profile and calculate the angle at the contact point. Kyowa interface science co. Measurement of contact angle wettability under high pressure requires a lot of experience working with high pressure cell we offer a suitable up gradation accessories kruss dsa100 system this instrument measure surface tension and contact angles of fluids in the parameter range.

Contact angles can be divided into static dynamic and. The ossila contact angle goniometer provides a fast reliable and easy method to measure contact angles and surface tensions of liquid droplets.