PhD Candidate Mostafa Bedewy won the “Best Presentation Award” at the National School on Neutron and X-ray Scattering (NXS). As the spokesperson of his group, Mostafa presented about experiments done on the Liquids Reflectometer beamline at the Spallation Neutron Source (SNS), in which Neutron Reflectometry (NR) was used to investigate the inter-diffusion between thin polystyrene films. Mostafa was sponsored to attend this intensive school organized by Argonne National Laboratory (ANL) and Oak Ridge National Laboratory (ORNL) among 64 highly-selected Physicists, chemists and materials scientists from US universities.