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Our materials fabrication and characterization work centers on thin film growth by pulsed laser deposition (PLD) and pulsed-dc magnetron sputtering. Main materials of current interest include several vanadium oxide phases, particularly those which exhibit phase transitions, as well as other oxides. Attention is directed also to the variation of properties caused by structural differences, including those in the nanoscale, and by stress. Film characterization extends to the determination of crystal structure by x-ray diffraction as well as a study of electronic, optical, and mechanical properties.
The laboratory of Advanced Materials Dynamics conducts research in nonlinear optics, photoexcited state dynamics, and condensed matter physics, focusing on relaxation processes in quantum materials. Methods of ultrafast nonlinear spectroscopy are applied to separate the charge and lattice dynamics upon photoexcitation and to reconstruct the evolution of electronic and structural material properties. The group is equipped with femtosecond and picosecond lasers, spectrometers, and state-of-the-art optical systems developed in our lab, including time- and angle-resolved hemispherical elastic light scattering system for femtosecond surface spectroscopy.