ABSTRACT
The quantification of the depletion force has been in the focus of many theoretical investigations since the 1950s. The configurational entropy of the system arrangement is higher than the configurational entropy of the system. Such increase in the system’s entropy as its constituents agglomerate is the driving force for agglomeration known as the entropic or depletion force. Surface tension effects are very important once our system is into the nanoscale. It is very well accepted that any solid body with density higher than that of a liquid cannot float on the liquid and must sink. It is clear that a 1 cm steel cube will sink while a 1 nm steel cube will float on the surface of water. It is also important to realize the magnitude ratio between the weight and surface tension in both cases.
