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     COLLOQUIUM OF THE COMPUTATIONAL MATERIALS SCIENCE CENTER
                                AND 
           THE DEPARTMENT OF COMPUTATIONAL & DATA SCIENCES
                            (CSI 898-Sec 001)
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      Neutron Scattering from Nanostructured Oxide Materials

                     Krishnamurthy V. Vemuru
Department of Physics and Astronomy, George Mason University, Fairfax, VA

Neutrons can penetrate deeply into materials. They can sense the position 
of atomic nuclei through strong interaction and magnetic moments through 
dipole-dipole interaction. The scattering of neutrons by both these 
mechanisms is well understood, so theories need not be concerned about 
the modeling or simulating the scattering process. Instead, the investigations 
can focus on the computation and experimental determination of the intrinsic 
positions of nuclei and spin-correlation functions. This enables neutron 
scattering as a unique tool to determine crystal structures, nanostructures, 
spin dynamics and phonon dispersions in solids. 

In this talk, I will focus on the applications of small angle neutron
 scattering to determine the orientational ordering of nanostructures 
in MgO nanorods, TiO2 nanowires and gamma-Fe2O3 nanoparticle dispersions.   
I will also discuss how small neutron angle scattering from nanostructures 
is modeled and calculated.

                         February 8, 2016
                               4:30 pm
                    Exploratory Hall, room 3301 
                          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