Fengyuan Shi presented "Nano Structure Assisted Phonon Scattering in a Lead-Free Thermoelectric Material: A TEM Study of SnTe Systems" in symposium "Microscopy and Spectroscopy for Power Generation and Energy Storage"with coauthors Shih-Han Lo, Gangjian Tan, Li-Dong Zhao, Mercouri G. Kanatzidis and Vinayak Dravid.