The Goldsmith Group is developing new technology for controlling how light interacts with molecules, often at the level of single molecules. One major area focuses on the use of photonic micro- and nano-structures, devices that alter how light interacts with matter, to develop new forms of molecule spectroscopy. Major efforts revolve around optical microresonators and photonic crystals, with applications in fundamental physics, new analytical chemistry tools, and chemical spectroscopy. The group deploys a range of single-molecule spectroscopy techniques to problems in chemistry, materials science, and biophysics. Research targets include novel mechanistic studies of homogeneous catalysts, investigation of electronic properties of conjugated polymers relevant for organic photovoltaic devices, and analysis of protein conformational dynamics.