contact angle


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Related to contact angle: surface tension

contact angle

[′kän‚takt ‚aŋ·gəl]
(fluid mechanics)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Nonylphenoxy poly (ethyleneoxy) ethanol homologs surfactants were added in a specific study, which showed that the more the concentration of surfactants the lesser the contact angle and resultantly increased hydrophilicity.18
Water contact angles of the coatings were determined using a contact angle meter (JC2000D4, Shanghai Zhongchen Equipment, China) at room temperature.
A numerical relationship exists between the roughness and contact angle. In the Wenzel model, cos [[theta].sup.*] = r cos [theta], where [[theta].sup.*] is the apparent contact angle of the sessile drop on the substrate, r is the roughness of the smooth substrate, and [theta] is the intrinsic contact angle (i.e., the contact angle for the ideal smooth substrate).
Measurement of contact angle depends on whether the solid surface is "nonwettable" or "wettable."
Quality and nature of wetting by an adhesive has been characterized by the contact angle method in which the angle of contact between a liquid droplet and the solid surface is determined (Good 1992, Johnson and Dettre 1993).
At this condition more water is retained in the evaporator as the contact angle increases.
Surface wettability was measured with the help of contact angle measurement using contact angle measurement setup, and surface configuration was determined with the help of scanning electron microscopy.
The EW set-up for contact angle measurements is described in Section 3.
If we agree that the advancing contact angle is the largest possible contact angle on the particular surface and the receding one is the lowest, the equilibrium contact angle is somewhere between them.