Mechanical and Materials Engineering for extending the use of their laboratory facilities and providing useful comments. I would like to thank Scott Cornelius and Charles M. Knaack, Department of Geology, for helping me with EDS and ICPMS analysis respectively. I would like to thank Chris Davitt and Valerie Lynch-Holm, Electron Microscopy Center, for providing hands on training on SEM and TEM. I would also iv express my thanks to Dr. Thompson and Anna Sekar Darujati for helping me with XRD. I would also express my gratitude to John Yates, John Grimes and other staff who provided valuable equipment fabrication support. I would like to thank my family, my mom and dad, without whose support I couldn't have accomplished whatever I had to. I know I have missed them a lot especially my dear younger sister Romila, during my stay in Pullman. Lastly, I would like to thank all my friends here in Pullman, especially Satish, Jagan and Ravindra, who really made my stay enjoyable and worthwhile. v