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4. Electrostatic forces system as a sphere on a flat
| Content Provider | Scilit |
|---|---|
| Author | Drelich, J. Mittal, Kash L. |
| Copyright Year | 2005 |
| Description | An alternative expression was proposed by Sendin and Rowlen [247], who measured adhesion forces with A F M under ambient conditions. The authors studied the nature of the pull-off force on a variety of surfaces as a function of relative humidity. A mathematical model of pull-off force as a function of relative humidity was proposed in which the chemical specificity was explained. The proposed form of the relationship between measured pull-off force and relative humidity is (36) where F s t v is the surface-tip adhesion force in the presence of water vapor, F s t w is the surface-tip adhesion force in the presence of liquid water, Fcap is the adhesion force due to capillary condensation, pf/p's is the relative humidity at the transition point between the two regimes and m is the slope of the transition. The capillary force may be calculated as the sum of force due to surface tension (Ft) and the force due to a pressure difference across a sphere's surface (F p) [248]. Book Name: Atomic Force Microscopy in Adhesion Studies |
| Related Links | https://content.taylorfrancis.com/books/download?dac=C2012-0-01935-9&isbn=9780429087295&doi=10.1201/b12164-14&format=pdf |
| Ending Page | 44 |
| Page Count | 3 |
| Starting Page | 42 |
| DOI | 10.1201/b12164-14 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2005-10-01 |
| Access Restriction | Open |
| Subject Keyword | Book Name: Atomic Force Microscopy in Adhesion Studies Adhesion Force |
| Content Type | Text |
| Resource Type | Chapter |
