This presentation will cover several phonon scattering mechanisms in a variety of materials to shed light on how nano-structuring affects the thermal conductivity of a material.  Various mechanisms include scattering at incoherent interfaces, such as grain boundaries in nano-grained SrTiO₃ and BaTiO₃, scattering at coherent interfaces such as weakly bonded layers in Sr₂Nb₂O₇ and ferroelastic domain boundaries in BiFeO₃, and scattering due to point defects such as impurities/dopants in solid-solution alloys such as PZT.  The overarching goal is that the attendees will be able to leave with an improved understanding of phonon thermal transport in material systems relevant to their research.