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     COLLOQUIUM OF THE COMPUTATIONAL MATERIALS SCIENCE CENTER
AND THE SCHOOL OF PHYSICS, ASTRONOMY, & COMPUTATIONAL SCIENCES
                            (CSI 898-Sec 001)
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          Electrostatic Interactions in Polymers and Soft Matter

                            Andrey Dobrynin

        Institute of Materials Science and Department of Physics, 
                   University of Connecticut, Storrs, CT
                                 and 
Division of Materials Research, National Science Foundation, Arlington, VA

Electrostatic interactions between macroions play an important role in
different areas ranging from materials science to biophysics.  They are main
driving forces behind layer-by-layer assembly technique that allows
fabrication of multilayer films from synthetic polyelectrolytes, DNA, proteins
and nanoparticles. They are responsible for the extremely low fiction
coefficient between biological surfaces such as articular cartilage coatings.
In this talk, using results of the molecular dynamics simulations and scaling
analysis, I will show what effect electrostatic interactions have on a
collapse of polyelectrolyte chain in a poor solvent conditions for the polymer
backbone, on a layer-by-layer assembly of charged nanoparticles and polymers
on porous substrates, and on friction and lubrication between brush covered
surfaces. 

                          November 18, 2013
                               4:30 pm
                    Room 3301, Exploratory Hall, Fairfax Campus

Refreshments will be served at 4:15 PM.
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Find the schedule at http://www.cmasc.gmu.edu/seminars.htm