Proceedings of the National Academy of Sciences of the United States of America

About the PNAS Member Editor
Name Leone, Stephen R.
Location University of California, Berkeley
Primary Field Chemistry
Secondary Field Physics
 Election Citation
Leone has made outstanding contributions to our understanding of the reaction dynamics of excited state, radical and ionic species. He has developed innovative laser probes to understand energy flow pathways in chemical reactions and to characterize energy disposition and flow in photodissociation processes.
 Research Interests
As a physical chemist, I have focused on experimental state-resolved molecular dynamics studies of small molecule collision systems. My research group employs sensitive laser probing to explore reaction dynamics, energy transfer, photofragmentation processes, and ion-molecule chemistry. The role of vibrational and rotational state-to-state dynamics in reactions and energy transfer has been an important theme. We also studied orbital and molecular alignment effects in detail, providing new insights into stereodynamics. We have initiated ultrafast femtosecond laser studies to explore coherent wave packet formation and control in molecules. A parallel program in semiconductor growth and etching sprang out of our molecular dynamics studies. We have investigated GaAs epitaxial growth, silicon etching, and cobalt disilicide formation with novel laser diagnostics and laser-produced kinetic-energy-enhanced reactive species. Recently we have developed scanned probe microscopies (near field and tunneling microscopy) to investigate ultrafast time processes on semiconductor surfaces.

 
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