Cassie's Law
Description
Cassie’s law describes the effective contact angle θc for a liquid on a composite surface. The law explains how simply roughing up a surface increases the apparent surface angle.
Related formulasVariables
| θc | effective contact angle for a liquid on a composite surface (deg) |
| f1 | area fraction f1 present in the composite material (dimensionless) |
| θ1 | contact angle for component 1 present in the composite material (deg) |
| f2 | area fraction f2 present in the composite material (dimensionless) |
| θ2 | contact angle for component 2 present in the composite material (deg) |