Milton Kahn Annual Lectureship Stephen Leone is the John R. Thomas Endowed Chair in Physical Chemistry, FRIDAY, JANUARY 29, 2016 Professor of Chemistry and Physics at the REFRESHMENT 3:45 PM University of California, Berkeley, and faculty SEMINAR: 4:00PM investigator, Lawrence Berkeley National Laboratory. His research interests are ultrafast SCI. AND MATH. LEARNING CENTER 102 and attosecond laser investigations of atomic, molecular, and solid state dynamics. His honors include the American Chemical Society Award in Pure Chemistry, the Herbert P. Broida Prize of the American Physical Society, the Bourke Medal of the Faraday Division of the Royal Society of Chemistry, the American Chemical Society Peter Debye Award, the Polanyi Medal of the Gas Kinetics Division of the Royal Society of Chemistry, and the Irving Langmuir Prize in Chemical Physics of the American Physical Society. He is a member of National Academy of Sciences and Fellow of the American Academy of Arts and Sciences. Attosecond Dynamics: From Molecules to Semiconductor Solids Stephen R. Leone Intriguing physics and chemistry problems abound in the pursuit of attosecond science,Departments as such ofmeasurements Chemistry and Physicspush the boundaries of fundamental electronand Lawrence dynamics Berkeley timescales. National Laboratory The x-ray transitions accessed by attosecondUniversity of pulses California, are Berkeley,responsive CA 94720to charge, chemical oxidation state, andwww.cchem.berkeley.edu/leonegrp/ electronic environment, and they exhibit sensitive shifts even with vibrational excitation. An introduction to attosecond measurements is presented, with a basic goal to reveal new dynamical timescales. Investigations involve the development of methods to explore coherent electronic superpositions and charge migration in molecules and to determine how fast a semiconductor band gap responds to the injection of carriers. .