Effective forces in square well and square shoulder fluids.

  title={Effective forces in square well and square shoulder fluids.},
  author={Davide Fiocco and Giorgio Pastore and Giuseppe Foffi},
  journal={The journal of physical chemistry. B},
  volume={114 37},
We derive an analytical expression for the effective force between a pair of macrospheres immersed in a sea of microspheres, in the case where the interaction between the two unlike species is assumed to be a square well or a square shoulder of given range and depth (or height). This formula extends a similar one developed in the case of hard core interactions only. Qualitative features of such effective force and the resulting phase diagrams are then analyzed in the limit of no interaction… CONTINUE READING

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