Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2007-03-14
J. Phys.: Condens. Matter 19 (2007) 322101
Physics
Condensed Matter
Soft Condensed Matter
7 pages, 6 figures May 8th, 2007: Corrected typos, corrected density critical exponent, fixed fugacity scale in Fig. 6
Scientific paper
We evaluate the location of the gas-liquid coexistence line and of the associated critical point for the primitive model for water (PMW), introduced by Kolafa and Nezbeda [J. Kolafa and I. Nezbeda, Mol. Phys. 61, 161 (1987)]. Besides being a simple model for a molecular network forming liquid, the PMW is representative of patchy proteins and novel colloidal particles interacting with localized directional short-range attractions. We show that the gas-liquid phase separation is metastable, i.e. it takes place in the region of the phase diagram where the crystal phase is thermodynamically favored, as in the case of articles interacting via short-range attractive spherical potentials. Differently from spherical potentials, we do not observe crystallization close to the critical point. The region of gas-liquid instability of this patchy model is significantly reduced as compared to equivalent models of spherically interacting particles, confirming the possibility of observing kinetic arrest in an homogeneous sample driven by bonding as opposed to packing.
Romano Fabrizio
Sciortino Francesco
Tartaglia Piero
No associations
LandOfFree
Gas-Liquid Coexistence in the Primitive Model for Water does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gas-Liquid Coexistence in the Primitive Model for Water, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas-Liquid Coexistence in the Primitive Model for Water will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-715692