Anisotropic particles with tetrahedral symmetry: Difference between revisions
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[[Image:patchy_4.png|thumb|right| Artists impression of a tetrahedral patchy particle]] | [[Image:patchy_4.png|thumb|right| Artists impression of a tetrahedral patchy particle]] | ||
==Kern and Frenkel model== | |||
The [[Phase diagrams |phase diagram]] of the tetrahedral [[Kern and Frenkel patchy model | Kern and Frenkel ]] [[patchy particles | patchy model]] exhibits the following solid phases<ref>[http://dx.doi.org/10.1021/jp9081905 Flavio Romano, Eduardo Sanz and Francesco Sciortino "Role of the Range in the Fluid−Crystal Coexistence for a Patchy Particle Model", Journal of Physical Chemistry B '''113''' pp. 15133–15136 (2009)]</ref><ref>[http://dx.doi.org/10.1063/1.3393777 Flavio Romano, Eduardo Sanz and Francesco Sciortino "Phase diagram of a tetrahedral patchy particle model for different interaction ranges", Journal of Chemical Physics '''132''' 184501 (2010)]</ref>: | The [[Phase diagrams |phase diagram]] of the tetrahedral [[Kern and Frenkel patchy model | Kern and Frenkel ]] [[patchy particles | patchy model]] exhibits the following solid phases<ref>[http://dx.doi.org/10.1021/jp9081905 Flavio Romano, Eduardo Sanz and Francesco Sciortino "Role of the Range in the Fluid−Crystal Coexistence for a Patchy Particle Model", Journal of Physical Chemistry B '''113''' pp. 15133–15136 (2009)]</ref><ref>[http://dx.doi.org/10.1063/1.3393777 Flavio Romano, Eduardo Sanz and Francesco Sciortino "Phase diagram of a tetrahedral patchy particle model for different interaction ranges", Journal of Chemical Physics '''132''' 184501 (2010)]</ref>: | ||
[[Building up a diamond lattice |diamond crystal]] (DC), | [[Building up a diamond lattice |diamond crystal]] (DC), | ||
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In contrast to isotropic models, the critical point becomes only weakly metastable with respect to the solid as the interaction range | In contrast to isotropic models, the critical point becomes only weakly metastable with respect to the solid as the interaction range | ||
narrows (from left to right in the figure). | narrows (from left to right in the figure). | ||
==Modulated patchy Lennard-Jones model== | |||
The solid phases of the [[modulated patchy Lennard-Jones model]] has also been studied <ref>[http://dx.doi.org/10.1063/1.3454907 Eva G. Noya, Carlos Vega, Jonathan P. K. Doye, and Ard A. Louis "The stability of a crystal with diamond structure for patchy particles with tetrahedral symmetry", Journal of Chemical Physics '''132''' 234511 (2010)]</ref> | |||
==See also== | ==See also== | ||
*[[PMW]] (primitive model for [[water]]) | *[[PMW]] (primitive model for [[water]]) | ||
Revision as of 11:38, 22 June 2010
Kern and Frenkel model
The phase diagram of the tetrahedral Kern and Frenkel patchy model exhibits the following solid phases[1][2]: diamond crystal (DC), body centred cubic (BCC) and face centred 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).
In contrast to isotropic models, the critical point becomes only weakly metastable with respect to the solid as the interaction range
narrows (from left to right in the figure).
Modulated patchy Lennard-Jones model
The solid phases of the modulated patchy Lennard-Jones model has also been studied [3]
See also
References
- ↑ Flavio Romano, Eduardo Sanz and Francesco Sciortino "Role of the Range in the Fluid−Crystal Coexistence for a Patchy Particle Model", Journal of Physical Chemistry B 113 pp. 15133–15136 (2009)
- ↑ Flavio Romano, Eduardo Sanz and Francesco Sciortino "Phase diagram of a tetrahedral patchy particle model for different interaction ranges", Journal of Chemical Physics 132 184501 (2010)
- ↑ Eva G. Noya, Carlos Vega, Jonathan P. K. Doye, and Ard A. Louis "The stability of a crystal with diamond structure for patchy particles with tetrahedral symmetry", Journal of Chemical Physics 132 234511 (2010)