2010/05/28 by Soma Nag, Nag, Soma, Tapati Dutta +3
Engineering · Materials Science · #Adhesion, Friction, and Surface Interactions #FOS: Physical sciences #Soft Condensed Matter (cond-mat.soft) #Surface Modification and Superhydrophobicity #Tribology and Lubrication Engineering
paper · pdf · doi:10.48550/arxiv.1005.5204
openalex publication_date 2010/05/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Spreading of different types of fluid on substrates under an impressed force is an interesting problem. Here we study spreading of four fluids, having different hydrophilicity and viscosity on two substrates - glass and perspex, under an external force. The area of contact of fluid and solid is video-photographed and its increase with time is measured. The results for different external forces can be scaled onto a common curve. We try to explain the nature of this curve on the basis of existing theoretical treatment where either the no-slip condition is used or slip between fluid and substrate is introduced. We find that of the eight cases under study, in five cases quantitative agreement is obtained using a slip coefficient.