Sat, 19 Jul 2008 03:07:56 BST CiteULike: dchen's Panagiotopoulos http://www.citeulike.org/user/dchen/author/Panagiotopoulos CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dchen/article/1283531 <i>Physical Review Letters, Vol. 98, No. 19. (2007)</i><br /><br />We calculate the full phase diagram of spherical charged colloidal particles using Monte Carlo free energy calculations. The system is described using the primitive model, consisting of explicit hard-sphere colloids and point counterions in a uniform dielectric continuum. We show that the gas-liquid critical point becomes metastable with respect to a gas-solid phase separation at colloid charges Q20 times the counterion charge. Approximate free energy calculations with only one and four particles in the fluid and solid phases, respectively, are used to determine the critical line for highly charged colloids up to Q=2000. We propose the scaling law Tc*" align="middle">~Q1/2 for this critical temperature. Disappearance of the Gas-Liquid Phase Transition for Highly Charged Colloids AP Hynninen AZ Panagiotopoulos doi:10.1103/PhysRevLett.98.198301 Physical Review Letters, Vol. 98, No. 19. (2007) 2007-05-08T12:03:35-00:00 2007 Physical Review Letters 98 19 APS 2007 charge colloids phase