Controlling acoustic transport in hypersonic crystals
Monday, October 27, 2014 - 08:30
in Physics & Chemistry
Center for Nanoscale Materials users from Toyota Research Institute of North America, working with CNM's Nanophotonics Group, have determined that bulk coherent acoustic vibrations are heavily damped by scattering from radially aligned nanosized pores within hypersonic crystals of closely packed colloidal silica. Surface acoustic modes are much less influenced, suggesting new ways to manipulate thermal transport via phonon propagation control.