Thesis (M.S.)-- American University of Beirut, Department of Physics, 2013.
Advisor : Dr. Ghassan Antar , Professor, Physics ; Committee Members : Dr. Mounib El-Eid, Professor, Physics ; Dr. Leonid Klushin, Professor, Physics ; Dr.Marwan Darwish , Professor, Mechanical Engineering.
Includes bibliographical references (leaves 91-93)