ABSTRACT

The importance of the data collected at these low R H values is that there is definitely a capillary neck present, but it does not significantly enhance the 'contact' adhesion between the particle and the surface. However, this capillary neck does influence the long-range pull-off behaviour, in that it results in an attachment between the surfaces out to significant separation distances. This attachment may be important in granular systems, under dynamic flow conditions, when the breaking of stress chains is required to initiate motion.