Nanoscale imaging of phonon dynamics by electron microscopy.

ABSTRACT: Spatially resolved vibrational mapping of nanostructures is indispensable to the development and understanding of thermal nanodevices¹, modulation of thermal transport² and novel nanostructured thermoelectric materials^3-5. Through the engineering of complex structures, such as alloys, nanostructures and superlattice interfaces, one can significantly alter the propagation of phonons and suppress material thermal conductivity while maintaining electrical conductivity². There have been no correlative experiments that spatially track the modulation of phonon properties in and around nanostructures due to spatial resolution limitations of conventional optical phonon detection techniques. Here we demonstrate two-dimensional spatial mapping of phonons i

SUBMITTER: Gadre CA 

PROVIDER: S-EPMC9177420 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature