| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 593788 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2013 | 5 Pages |
The spreading of a non-Newtonian liquid drop over a homogeneous rough surface is theoretically analyzed in the case of complete wetting. Using the energy approach, a relation is derived among the surface roughness, spreading rate of the drop and the contact angle. It is shown that non-Newtonian liquid drop spreads faster over rough surface than smooth surface. Further, it is observed that a shear thickening liquid (n > 1) spreads with faster speed than a shear thinning liquid (n < 1) over a rough surface.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A non-Newtonian liquid drop spreads faster over rough surface than smooth surface. ► Dilatant liquid spreads faster than pseudo plastic liquid on a rough surface. ► Surface roughness provides enhance spreading in case of complete wetting.
