http://bio-ice.forumotion.com/physics-of-heterogeneous-ice-nucleation-f3/-t1.htm How do heterogeneous ice nucleators catalyze the freezing of water? This is the place where physicists will help biologists understand the mechanisms involved in the phase change of water from a liquid or a gas to a solid. Tue, 24 Nov 2009 11:07:03 GMT 10 http://i71.servimg.com/u/f71/13/31/11/69/banner12.jpg http://bio-ice.forumotion.com/physics-of-heterogeneous-ice-nucleation-f3/-t1.htm http://bio-ice.forumotion.com/physics-of-heterogeneous-ice-nucleation-f3/sugar-and-ice-evaluating-the-interactions-between-heterogeneous-ice-nucleators-and-solutes-t20.htm ceMorris In our attempt to understand the mechanisms by which ice nucleators catalyze freezing, we biologists have sometimes imagined ice nucleation active proteins as having an attractive force that draws water molecules into the appropriate configuration to form ice. Our simplified model involves water molecules and proteins. But what would happen to the interaction of water molecules and these proteins in the presence of other forces on the water molecules? The forces that can bind water molecules ... Physics of heterogeneous ice nucleation Tue, 24 Nov 2009 11:07:03 GMT http://bio-ice.forumotion.com/physics-of-heterogeneous-ice-nucleation-f3/sugar-and-ice-evaluating-the-interactions-between-heterogeneous-ice-nucleators-and-solutes-t20.htm#26 http://bio-ice.forumotion.com/physics-of-heterogeneous-ice-nucleation-f3/sugar-and-ice-evaluating-the-interactions-between-heterogeneous-ice-nucleators-and-solutes-t20.htm http://bio-ice.forumotion.com/physics-of-heterogeneous-ice-nucleation-f3/heterogeneous-ice-nucleation-and-bio-particles-quick-summary-t8.htm vaughanp So as to "kick off" the discussion here, I'll just summarise a few of the emails exchanged about ice nucleation so far. Bruce Moffett asked about the Bergeron-Findeisen process in mixed-pahse clouds. Zev Levin explained that it involves air that has both liquid and ice present tending to have a humidity close to water saturation, so that there is great supersaturation with respect to ice. The latter causes rapid growth of ice crystals by diffusion of vapour, and any subsaturation ... Physics of heterogeneous ice nucleation Sun, 07 Dec 2008 00:33:30 GMT http://bio-ice.forumotion.com/physics-of-heterogeneous-ice-nucleation-f3/heterogeneous-ice-nucleation-and-bio-particles-quick-summary-t8.htm#9 http://bio-ice.forumotion.com/physics-of-heterogeneous-ice-nucleation-f3/heterogeneous-ice-nucleation-and-bio-particles-quick-summary-t8.htm