Our research focuses on studying the organization and interaction of molecules in heterogeneous functional materials with chemically sensitive, super-resolution imaging techniques. Specifically, we use scattering-type near-field optical microscopy with suitable combinations of visible and infrared lasers to match electronic and vibrational levels of the molecules to investigate composition, distribution and interaction of nano-domains at the material interface. The scattering-type near-field technique provides <15 nm spatial resolution, far exceeding the diffraction limit, and enables sub-ensemble studies that are not previously accessible by traditional spectroscopic methods.
Currently, we are interested in spectroscopic studies of nanostructured polymers and energy-related materials, as well as technique development. For more information and research opportunities for graduate students, please contact Dr. Xu.