effect of temperature on contact angle
Consider a liquid droplet at rest on a flat, solid surface. A cross-sectional view of the droplet is given below. Its shape is characteristically lenticular. The angle formed by the solid surface and the tangent line to the upper surface at the end point is called the contact angle.
The contact angle is a result of the interface/surface tensions (surface free energies) between liquid and solid surrounded by vapor, and is measured according to the Young equationgiven below:
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