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    COLLOQUIUM OF THE LABORATORY FOR COMPUTER DESIGN OF MATERIALS
        Institute for Computational Sciences and Informatics
	                      (CSI 898-Sec 001) 

    FROM MOLECULAR SCALE STRUCTURE TO INTERFACE FORMATION IN LIQUIDS 

                            John. D. Weeks 
     Institute for Physical Science and Technology and Department 
          of Chemistry, University of Maryland, College Park

We show that the density response of a liquid to an external perturbation 
such as a wall or a fixed solute particle can be accurately calculated. 
The theory first determines a relatively slowly varying component of 
the density associated with the formation of smooth interfaces. This 
can be described very generally using a simple mean field theory in terms 
of only a few macroscopic parameters like the surface tension. The 
molecular scale detail distinguishing the local structure of one liquid 
from another enters the theory explicitly only in a second step where 
excluded volume regions and small length scale fluctuations about the 
slowly varying density component are taken into account. Applications 
to nonuniform simple liquids and to hydrophobic interactions in water 
will be briefly discussed.

	                  Monday , October 25 1999
                                  4:30 pm
                         Room 206, Science & Tech. I

Refreshments will be served.
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Find the schedule at http://www.csi.gmu.edu/lcdm/seminar/schedule.html