A new model for contact angle hysteresis
| dc.contributor.area | Mathematics | en_US |
| dc.contributor.author | DeSimone, Antonio | en_US |
| dc.contributor.author | Gruenewald, Natalie | en_US |
| dc.contributor.author | Otto, Felix | en_US |
| dc.contributor.department | Functional Analysis and Applications | en_US |
| dc.date.accessioned | 2006-07-26T09:50:37Z | en_US |
| dc.date.accessioned | 2011-09-07T20:27:34Z | |
| dc.date.available | 2006-07-26T09:50:37Z | en_US |
| dc.date.available | 2011-09-07T20:27:34Z | |
| dc.date.issued | 2006-07-26T09:50:37Z | en_US |
| dc.description.abstract | We present a model which explains several experimental observations relating contact angle hysteresis with surface roughness. The model is based on the balance between released energy and dissipation, and it describes the stick-slip behavior of drops on a rough surface using ideas similar to those employed in dry friction, elasto-plasticity and fracture mechanics. The main results of our analysis are formulas giving the interval of stable contact angles as a function of the surface roughness. These formulas show that the difference between advancing and receding angles is much larger for a drop in complete contact with the substrate (Wenzel drop) than for one whose cavities are filled with air (Cassie-Baxter drop). This fact is used as the key tool to interpret the experimental evidence. | en_US |
| dc.format.extent | 313357 bytes | en_US |
| dc.format.mimetype | application/pdf | en_US |
| dc.identifier.citation | Netw. Heterog. Media 2 (2007) 211-225 | en_US |
| dc.identifier.uri | https://openscience.sissa.it/handle/1963/1848 | en_US |
| dc.language.iso | en_US | en_US |
| dc.relation.ispartofseries | SISSA;37/2006/M | en_US |
| dc.title | A new model for contact angle hysteresis | en_US |
| dc.type | Preprint | en_US |