- Chemistry 4606
Wilson Ho, UCI
Optical microscopy has played an enabling role in experimental observation, particularly the biological sciences. The desire for observing increasingly finer details has pushed instrument development toward the limit of spatial resolution. By using a low temperature scanning tunneling microscope (STM) and coupling light to the tunnel junction, it has become possible to probe optical phenomena in chemistry and nanoscale materials with sub- ngström resolution. This capability provides a new window for viewing molecular properties by light. Specific examples include spatially resolved optical spectroscopy and imaging of light emission from single molecules and nanostructures, as well as photo-induced electron transfer to a single molecule.