Research Index / Materials Science
Faculty: Peter Pronko - Roy Clarke - Xiaoqing Pan - Steve Yalisove - Gerard Mourou
Graduate Students: Paul Van Rompay - Zhiyu Zhang - Paul Torek - Peter Diehr - Juan Dominguez - Wei Tian - Yoosuf Picard - Beth Carroll
The materials science program has been very active during the past year. Its research effort has been greatly enhanced through collaborations with the Department of Materials Science & Engineering at the University of Michigan. These collaborations started with Prof. Xiaoqing Pan on oxide thin films and have since been extended to cooperative research with Prof. Steve Yalisove on surface kinetics and epitaxial roughening studies. These involvements build upon earlier interactions that have been occurring between the materials science group at CUOS and the Applied Physics program with Prof. Roy Clarke. This group, which now interacts through CUOS and its laser facilities, has added a second laboratory area which houses two new vacuum deposition and analysis facilities. These are in addition to the one that has been developed by Dr. Peter Pronko and which has been used for demonstrating the application of femtosecond lasers to the fabrication of thin films.
The synergistic activities of this group have led to the organization of a new thrust effort growing out of CUOS which is entitled the FemtoFab program. The work performed with Prof. Pan has resulted in two papers and several presentations at the Materials Research Society Conference. This work demonstrated extremely high quality films of SnO2 that can be grown using ultrafast laser technology. The published papers are: "Epitaxial nanocrystalline tin dioxide thin films grown on (0001) sapphire by femtosecond pulsed laser deposition", Dominguez-JE, Fu-L, Pan-XQ; Applied-Physics-Letters. vol.79, no.5; 30 July 2001; p.614-16 and another that is in press at the Journal of Applied Physics entitled "Epitaxial SnO2 Thin Films Grown on (1012) Sapphire by Femtosecond Pulsed Laser Deposition".
Work continues in the area of isotope enrichment that we have observed to occur in the ablation plumes generated by ultrafast lasers. In support of this research, a new program was funded by the U.S. Department of Energy entitled "Isotopically-Enriched Films and Nanostructures by Ultrafast Pulsed Laser Deposition".
Research involving time-resolved electron diffraction continues, in collaboration with Prof. H. El-Sayed Ali at Old Dominion University. The aim is to study the phase transformation of solids on an ultrafast timescale.
In collaboration with Huron Valley Steel, research continues into sorting metals on conveyor belts using laser-induced breakdown spectroscopy (LIBS). In addition, LIBS is being used to study dental enamel as part of a collaboration with the School of Dentistry at UM.
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