Daffodil International University

Faculties and Departments => Faculty Sections => Departments => Topic started by: ABM Nazmul Islam on September 30, 2014, 10:10:16 AM

Title: Contact angle
Post by: ABM Nazmul Islam on September 30, 2014, 10:10:16 AM

The contact angle is the angle, conventionally measured through the liquid, where a liquid/vapor interface meets a solid surface. It quantifies the wettability of a solid surface by a liquid via the Young equation. Generally, if the water contact angle is smaller than 90°, the solid surface is considered hydrophilic and if the water contact angle is larger than 90°, the solid surface is considered hydrophobic.