Selected Awards
Ellis Lippincott Award in Spectroscopy, Optical Society of America, Society of Applied Spectroscopy, and Coblentz Society. Langmuir Lecturer Award, American Chemical Society Division of Colloid and Surface Chemistry. Coblentz Award in Molecular Spectroscopy. H.L. Dai Festschrift, Journal of Physical Chemistry. American Chemical Society Philadelphia Section Award. Fellow, American Chemical Society. Fellow, American Physical Society. Guggenheim Fellow. Dreyfus Teacher-Scholar Award. Sloan Fellow. Michael P. Malone International Leadership Award, Association of Public and Land Grant Universities. Knight of the Order of the Italian Star, Government of Italy. Distinguished Alumni Award, National Taiwan University.

Interests
Nonlinear optical and spectroscopic/microscopic studies of the structure and dynamics of surfaces and interfaces, colloidal particles, aerosols, nanoparticles, micelles, liposomes and biological cells; structure and dynamics of new energy materials including RTIL, DSSS, and organic crystals and thin films; energy transfer and reactions of highly excited molecules.