Authors
Robert W Carpick, D Frank Ogletree, Miquel Salmeron
Publication date
1999/3/15
Journal
Journal of colloid and interface science
Volume
211
Issue
2
Pages
395-400
Publisher
Academic Press
Description
The variation of contact area with load between adhesive elastic spheres depends upon the effective range of attractive surface forces. Relatively simple forms to describe limiting cases exist, but the general intermediate case requires a more complex analysis. Maugis, using a Dugdale model [D. Maugis,J. Colloid. Interf. Sci.150, 243 (1992)], provides an analytic solution, but the resulting equations are cumbersome if one wishes to compare with experimental data such as atomic force microscope measurements. In this paper we present a simpler general equation that approximates Maugis' solution extremely closely. The general equation is amenable to conventional curve fitting software routines and provides a rapid method of determining the value of the “transition parameter” which describes the range of surface forces.
Total citations
Scholar articles
RW Carpick, DF Ogletree, M Salmeron - Journal of colloid and interface science, 1999