Ontology highlight
ABSTRACT:
SUBMITTER: Qi R
PROVIDER: S-EPMC7896073 | biostudies-literature | 2021 Feb
REPOSITORIES: biostudies-literature
Nature communications 20210219 1
Directly mapping local phonon dispersion in individual nanostructures can advance our understanding of their thermal, optical, and mechanical properties. However, this requires high detection sensitivity and combined spatial, energy and momentum resolutions, thus has been elusive. Here, we demonstrate a four-dimensional electron energy loss spectroscopy technique, and present position-dependent phonon dispersion measurements in individual boron nitride nanotubes. By scanning the electron beam in ...[more]