Anisotropic particles with tetrahedral symmetry: Difference between revisions

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The phase diagram of tetrahedral, patchy particles <ref>[http://dx.doi.org/10.1021/jp9081905 F. Romano, E. Sanz and F. Sciortino  "Role of the Range in  the Fluid−Crystal Coexistence for a  
The phase diagram of tetrahedral, patchy particles <ref>[http://dx.doi.org/10.1021/jp9081905 F. Romano, E. Sanz and F. Sciortino  "Role of the Range in  the Fluid−Crystal Coexistence for a  
Patchy Particle Model", J. Phys. Chem. B '''113''' pp. 15133–15136 (2009)]</ref>
Patchy Particle Model", J. Phys. Chem. B '''113''' pp. 15133–15136 (2009)]</ref>
exhibits the following solid phases: Diamond Crystal,
exhibits the following solid phases: Diamond Crystal (DC),
Body Centered Cubic and Face Centered Cubic. The gas-liquid critical point becomes metastable with respect
Body Centered Cubic (BCC) and Face Centered Cubic (FCC). The gas-liquid critical point becomes metastable with respect
to the Diamond Crystal when the range of the interaction becomes short (roughly less than 15% of the  
to the Diamond Crystal when the range of the interaction becomes short (roughly less than 15% of the  
diameter).  Interestingly, and differently from the isotropic case, the supersaturation of the fluid at the critical point does not significantly increase upon going toward the adhesive (vanishing interaction range) limit.
diameter).   


[[Image:romanojpcb09.gif]]
[[Image:romanojpcb09.gif]]


By contrast to isotropic models, the critical point
has only a weak metastability
with respect to the solid as the interaction range
narrows (from left to right in the figure).


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Revision as of 18:24, 28 November 2009

The phase diagram of tetrahedral, patchy particles [1] exhibits the following solid phases: Diamond Crystal (DC), Body Centered Cubic (BCC) and Face Centered Cubic (FCC). The gas-liquid critical point becomes metastable with respect to the Diamond Crystal when the range of the interaction becomes short (roughly less than 15% of the diameter).

By contrast to isotropic models, the critical point has only a weak metastability with respect to the solid as the interaction range narrows (from left to right in the figure).


References

  1. [http://dx.doi.org/10.1021/jp9081905 F. Romano, E. Sanz and F. Sciortino "Role of the Range in the Fluid−Crystal Coexistence for a Patchy Particle Model", J. Phys. Chem. B 113 pp. 15133–15136 (2009)]