Which type of potentials exhibit the anomalous behavior of water?
When: April 16, 2008 (Wed), 10:00AM to 11:00AM
Note: Special Biophysics Seminar in PRB 595 at 10 AM
Hosted by:
H. Eugene Stanley
Speaker: Marcia Barbosa, Institute of Physics, Rio Grande University, Brazil
This event is part of the Biophysics Seminar Series. 1:30 SCI 352
Abstract:
Water is quite a fascinating liquid. Most liquids contract upon cooling. This is not the case of water, a liquid where the specific volume at ambient pressure starts to increase when cooled below 4 degrees Celcius. Besides, in a certain range of pressures, water also exhibits an anomalous increase of compressibility and specific heat upon cooling. Far less known are its dynamics anomalies: while for most materials diffusivity decreases with increasing pressure, liquid water has an opposite behavior in a large region of the phase diagram. This talk will show that one might be able to construct new molecules with the same anomalies as the one presented in water using two length scale interactions.